Hisense Hi-Therma Series Service Handbook
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Hisense Hi-Therma Series Service Handbook

Air-to-water heat pump, split/integra outdoor unit, split indoor unit, integra indoor unit, monobloc
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Qingdao Hisense Hitachi Air-conditioning Systems Co.,Ltd.
Add.: No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China
http://www.hisensehvac.com E-mail: export@hisensehitachi.com
Specifications in this catalogue are subject to change without notice, in order that Hisense may
bring the latest innovations to their customers.
TCY12021017E
AIR-TO-WATER HEAT PUMP
Technical, Installation
and Service Handbook
Hi-Therma
SERIES
BASIC MODELS
Hi-Therma Split/Integra Outdoor Unit
AHW-044HCDS1
AHW-060HCDS1
AHW-080HCDS1
Hi-Therma Split Indoor Unit
AHM-044HCDSAA
AHM-060HCDSAA
AHM-080HCDSAA
Hi-Therma Integra Indoor Unit
AHM-044HCDSAA-23
AHM-060HCDSAA-23
AHM-080HCDSAA-23
Hi-Therma Monobloc
AHZ-044HCDS1
AHZ-080HCDS1
TCY12021017E
Date: March. 2023

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Summary of Contents for Hisense Hi-Therma Series

  • Page 1 Add.: No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China http://www.hisensehvac.com E-mail: export@hisensehitachi.com Hi-Therma Monobloc AHZ-044HCDS1 Specifications in this catalogue are subject to change without notice, in order that Hisense may AHZ-080HCDS1 bring the latest innovations to their customers. TCY12021017E TCY12021017E Date: March.
  • Page 3 Español Las especificaciones de este manual están sujetas a cambios sin previo aviso a fin de que Hisense pueda ofrecer las últimas innovaciones a sus clientes. La versión en inglés es la original, y las versiones en otros idiomas son traducciones de la inglesa. En caso de discrepancias entre la versión inglesa y las versiones traducidas, prevalecerá...
  • Page 4 IMPORTANT NOTICE C A U T I O N This product shall not be mixed with general house waste at the end of its life and it shall be retired according to the appropriated local or national regulations in an environmentally correct way. Due to the refrigerant, oil and other components contained in heat pump, its dismantling must be done by a professional installer according to the applicable regulations.
  • Page 5 IMPORTANT NOTICE TECHNICAL PARAMETERS English Following Regulation EU No. 517/2014 on Certain Fluorinated Greenhouse gases, it is mandatory to fill in the label attached to the unit with the total amount of refrigerant charged on the installation. Do not vent R32 into the atmosphere: R32 are fluorinated greenhouse gases covered by the Kyoto protocol global warming potential (GWP) R32 = 675. Tn of CO2 equivalent of fluorinated greenhouse gases contained is calculated by indicated GWP * Total Charge (in kg) indicated in the product label and divided by 1000.
  • Page 6 IMPORTANT NOTICE English (Only when using R32) A D V E R T E N C I A wA R N I N g Este símbolo mostrado en el aparato indica que este está cargado con R32, un gas refrigerante inflamable e inodoro con una BURST HAZARD veloci-dad de combustión lenta (Clase A2L de acuerdo con ISO Do not allow air or any gas mixture containing oxygen into refrigerant...
  • Page 7 V O R S I C H T O S T R Z E Ż E N I E Dieses auf dem Gerät angezeigte Symbol zeigt an, dass wichtige Umieszczenie tego symbolu na jednostce oznacza, że jest ona Informationen im Betriebshandbuch und/oder Installationshandbu-ch napełniona czynnikiem chłodniczym R32, bezwonnym i palnym enthalten sind.
  • Page 8 ● Within the policy of continuous improvement of its around the workspace shall be sectioned off. Ensure products, Hisense reserves the right to make changes that the conditions within the area have been made safe at any time without prior notification and without being by control of flammable material.
  • Page 9 - The ventilation machinery and outlets are operating - Intrinsically safe components are the only types adequately and are not obstructed. that can be worked on while live in the presence of a - If an indirect refrigerating circuit is being used, the flammable atmosphere.
  • Page 10 ● Charging procedures ● Labelling - Ensure that contamination of different refrigerants - Equipment shall be labelled stating that it has been does not occur when using charging equipment. Hoses decommissioned and emptied of refrigerant. The label or lines shall be as short as possible to minimise the shall be dated and signed.
  • Page 11 2. SAFETY Symbol Explanation 2.1 APPLIED SYMBOLS Before installation, read the installation and ● During normal heat pump system design work or unit operation manual, and the wiring instruction sheet. installation, greater attention must be paid in certain Before performing maintenance and service tasks, situations requiring particular care in order to avoid read the service manual.
  • Page 12 ● Means for disconnection from the supply mains, which ● If the supply cord is damaged, it must be replaced by the have a contact separation in all poles that provide full manufacturer, its service agent or similarly qualified persons in disconnection under overvoltage category III conditions, order to avoid a hazard.

  • Page 13: Table Of Contents

    CONTENT IMPORTANT NOTICE GENERAL NOTES SAFETY APPLIED SYMBOLS ADDITIONAL INFORMATION General information General information 1.1.1 Line-Up of Hi-Therma Split 1.1.2 Line-Up of Hi-Therma Integra 1.1.3 Line-Up of Hi-Therma Monobloc 1.1.4 List of Accessories Summary of operations General data Key Parameter 2.1.1 Hi-Therma Split 2.1.2...

  • Page 14: Important Notice

    Hydraulic working range 5.3.1 Hydraulic data 5.3.2 Pump performance curves General dimensions Hi-Therma Split/Integra Outdoor Unit 6.1.1 Dimensional Data of Hi-Therma Split/Integra Outdoor Unit 6.1.2 Structure of Hi-Therma Split/Integra Outdoor Unit Hi-Therma Split Indoor Unit 6.2.1 Dimensional Data of Hi-Therma Spit Indoor Unit 6.2.2 Structure of Hi-Therma Indoor Unit Hi-Therma Integra Indoor Unit...
  • Page 15 8.2.1 GENERAL INFORMATION 8.2.2 SAFETY 8.2.2.1 APPLIED SYMBOLS 8.2.2.2 ADDITIONAL INFORMATION ABOUT SAFETY 8.2.3 IMPORTANT NOTICE 8.2.3.1 INFORMATION 8.2.3.2 MINIMUM FLOOR AREA REQUIREMENTS 8.2.4 BEFORE OPERATION 8.2.4.1 GENERAL NOTES 8.2.4.2 FACTORY-SUPPLIED INDOOR UNIT COMPONENTS 8.2.5 GENERAL DIMENSIONS 8.2.5.1 SERVICE SPACE 8.2.5.2 DIMENSIONAL DATA 8.2.6 TO HANDLE THE UNIT...
  • Page 16 8.3.8.5 VACUUM PUMPING AND REFRIGERANT CHARGE 8.3.8.6 REFRIGERANT CHARGING QUANTITY 8.3.8.7 CAUTION OF THE PRESSURE BY CHECK JOINT 8.3.9 ELECTRICAL WIRING 8.3.9.1 GENERAL CHECK 8.3.9.2 COMMON WIRING 8.3.9.3 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNITS 8.3.9.4 WIRING SIZE AND MAIN SWITCH PROTECTION 8.3.9.5 SETTING OF DIP SWITCHES 8.3.10 TEST RUN 8.3.11...
  • Page 17 10.1.2.1 3WVs operation 10.1.2.2 Operation priority 10.1.3 Heat source 10.1.3.1 Available heat source 10.1.3.2 Emergency operation 10.2 Space heating/cooling 10.2.1 Room thermostat 10.2.1.1 Room Thermo ON/OFF 10.2.1.2 ECO operation 10.2.2 Water Cycle for space heating 10.2.2.1 Set target outlet water temperature 10.2.2.2 Second water temperature control 10.2.2.3 Thermo ON/OFF and capacity control 10.2.2.4 Heating Auto ON/OFF...
  • Page 18 10.9 Optional functions 10.9.1 Screed Drying 10.9.2 Defrost by DHW and electric heater 10.9.3 Second Outdoor Ambient Temperature 10.9.4 Energy configuration 10.9.5 Smart function 10.9.6 Duty Control 10.9.7 Night Shift 10.9.8 Quiet Mode 10.10 Input /Output /Auxiliary sensors 10.10.1 Input 10.10.2 Output 10.10.3 Auxiliary sensors 10.11 Test Run 10.11.1 Actuator test run...
  • Page 19 2.1.1 Removing the pipe cover 2.1.2 Removing the front cover and upper cover 2.1.3 Removing the Side cover and Side Electrical box cover 2.1.4 Removing the Propeller fan 2.1.5 Removing the outdoor fan motor 2.1.6 Removing the compressor 2.1.7 Removing the high pressure switch and low pressure switch 2.1.8 Removing the 4-way reversing valve and coil 2.1.9...
  • Page 20 2.4.2 Removing the Fan Grille 2.4.3 Removing the Propeller Fan 2.4.4 Removing the Fan Motor 2.4.5 Removing the Refrigerant Components 2.4.5.1 Removing the Low Pressure Switch (PSL) 2.4.5.2 Removing the High Pressure Switch (PSH) 2.4.5.3 Removing the Expansion Valve and Coil 2.4.5.4 Removing the 4-way Reversing Valve Coil 2.4.5.5 Removing the 4-way reversing valve 2.4.6...
  • Page 21 DESIGN...

  • Page 22: General Information

    1.1 General information Hisense R32 Hi-Therma series units produce heating and domestic hot water like any oil or gas boiler, but transforming renewable energy from the outside air into heat. Air to water heat pumps extract the free energy present in the air, which is enough to heat a home up to a comfortable temperature, even on the coldest winter day.

  • Page 23: Line-Up Of Hi-Therma Integra

    General information 1.1.2 Line-Up of Hi-Therma Integra It consists of one outdoor unit and one indoor unit. The outdoor unit extracts the heat present in the air, increases its refrigerant temperature and transmits it to the water circuit using the plate heat exchanger of the indoor unit, where the heat is taken to radiators (fan-coils), underfloor heating components or both (two circuit temperature area).

  • Page 24: List Of Accessories

    General information 1.1.4 List of Accessories Accessory Name Figure Function Detect Outdoor ambient Second Outdoor Ambient HC-T-01M temperature with the second temperature sensor sensor Detect water temperature e.g. HTS-E1000A1 Water temperature sensor DHW/Tow2/Tow3 etc. Indoor ambient temperature HCT-S01E Detect room temperature sensor Room thermostat for room HSXE-VC04...

  • Page 25: General Data

    General data 2. General data 2.1 Key Parameter 2.1.1 Hi-Therma Split The heating capacity tables show the capacity and performance data in integrated values. ● The heating and cooling capacities are based on the EN 14511 standard: Piping length: 7.5 meters; Piping lift: 0 meters. ●...
  • Page 26 General data Condenser Fan Quantity —— Air Flow Rate 2700 2700 2700 Minimum piping length Maximum chargeless piping length Maximum piping length 45(50*3) Height difference between OU and IU (higher OU / lower OU) 30 / 20 Outdoor ambient temperature °C (DB) -25~35 Working range...

  • Page 27: Hi-Therma Integra

    General data 2.1.2 Hi-Therma Integra The heating capacity tables show the capacity and performance data in integrated values. ● The heating and cooling capacities are based on the EN 14511 standard: Piping length: 7.5 meters; Piping lift: 0 meters. ● The noise values are measured in the anechoic chamber without reflected echo, therefore the impact of the reflected echo must be taken into consideration at the scene, in accordance with the standard EN12102.

  • Page 28: Hi-Therma Monobloc

    General data 2.1.3 Hi-Therma Monobloc The heating capacity tables show the capacity and performance data in integrated values. ● The heating and cooling capacities are based on the EN 14511 standard: Piping length: 7.5 meters; Piping lift: 0 meters. ● The noise values are measured in the anechoic chamber without reflected echo, therefore the impact of the reflected echo must be taken into consideration at the scene, in accordance with the standard EN12102.
  • Page 29 General data Condenser Fan Quantity Air Flow Rate 2700 2700 Minimum piping length —— —— Maximum chargeless piping length —— —— Maximum piping length —— —— Height difference between OU and IU (higher OU / lower OU) —— —— Outdoor ambient temperature °C (DB) -25~35 Working range...

  • Page 30: Erp Performance Data For Space Heating

    General data 2.2 ERP performance data for space heating This appliance must be installed, maintained and dismantled by professionals. Do not pour contained refrigerant into the atmosphere since this refrigerant fluid is a fluorinated greenhouse gas regulated under European Regulation (EU)Nº...

  • Page 31: Erp Data - Hi-Therma Integra

    General data 2.2.2 ERP data - Hi-Therma Integra For space heating 44(2.0 HP) 60(2.5 HP) 80(3.0 HP) Model Outdoor unit AHW-044HCDS1 AHW-060HCDS1 AHW-080HCDS1 Indoor unit AHS-044HCDSAA-23 AHS-060HCDSAA-23 AHS-080HCDSAA-23 Water outlet temperature 35°C 55°C 35°C 55°C 35°C 55°C Air to water heat pump Indication if the heater is equipped with a supplementary heater Parameters shall be declared for...

  • Page 32: Erp Data - Hi-Therma Monobloc

    General data 2.2.3 ERP data - Hi-Therma Monobloc 44(2.0 HP) 80(3.0 HP) Model Outdoor unit AHZ-044HCDS1 AHZ-080HCDS1 Water outlet temperature 35°C 55°C 35°C 55°C Air to water heat pump Indication if the heater is equipped with a supplementary heater Parameters shall be declared for Low temperature /Medium temperature application Parameters shall be declared for the average heating season Outdoor side heat exchanger of...

  • Page 33: Cooling Mode Application (En 14825)

    General data 2.3 Cooling mode application (EN 14825) 2.3.1 Cooling data- Hi-Therma Split 44(2.0 HP) 60(2.5 HP) 80(3.0 HP) Model Outdoor unit AHW-044HCDS1 AHW-060HCDS1 AHW-080HCDS1 Indoor unit AHM-044HCDSAA AHM-060HCDSAA AHM-080HCDSAA Water outlet temperature 7°C 18°C 7°C 18°C 7°C 18°C Outdoor side heat exchanger of air conditioner/heat pump Indoor side heat exchanger of air Water...

  • Page 34: Cooling Data- Hi-Therma Monobloc

    General data 2.3.3 Cooling data- Hi-Therma Monobloc 44(2.0 HP) 80(3.0 HP) Model Outdoor unit AHZ-044HCDS1 AHZ-080HCDS1 Water outlet temperature 7ºC 18ºC 7ºC 18ºC Outdoor side heat exchanger of air conditioner/heat pump Indoor side heat exchanger of air Water conditioner/heat pump Product description Type Compressor driven vapour compression...

  • Page 35: Component Data

    General data 2.4 Component data 2.4.1 Hi-Therma Split Outdoor unit Model 44(2.0HP) 60(2.5HP) 80(3.0HP) Heat exchanger Type Multi-way cross-flow finned tube type Material Copper Tube Outer diameter Rows Number of tubes in the heat exchanger Heat Exchanger Material Aluminum Pitch 1.40 Max.
  • Page 36 General data Indoor unit Model 44(2.0HP) 60(2.5HP) 80(3.0HP) Type Brazed plate Material Stainless steel Transfer fluids R32 - H Water heat Quantity exchanger Internal refrigerant volume 0.45 0.45 0.57 Internal water volume 0.61 0.61 0.76 Insulation material Model PARA RS15/7.0; GRUNDFOS UPM4K15-75 130 Type Inverter Control...

  • Page 37: Hi-Therma Integra

    General data 2.4.2 Hi-Therma Integra For the outdoor unit component data of Hi-Therma Integra, please refer to 2.4.1 Hi-Therma Split outdoor unit. Indoor unit 44(2.0HP) 60(2.5HP) 80(3.0HP) Model AHS-044HCDSAA-23 AHS-060HCDSAA-23 AHS-080HCDSAA-23 Type Brazed plate Material Stainless steel Transfer fluids R32 - H Water heat Quantity exchanger...

  • Page 38: Hi-Therma Monobloc

    General data 2.4.3 Hi-Therma Monobloc MODEL 44(2.0HP) 80(3.0HP) Heat exchanger Type Multi-way cross-flow finned tube type Material Copper Tube Outer diameter Rows Number of tubes in the heat exchanger Heat Exchanger Material Aluminum Pitch 1.40 Max. operating pressure 4.15 Max. frontal area 0.68 Number of heat exchanger per unit Type...
  • Page 39 General data MODEL 44(2.0HP) 80(3.0HP) Type Brazed plate Material Stainless steel Transfer fluids R32 - H Water heat exchanger Quantity Internal refrigerant volume 0.45 0.57 Internal water volume 0.61 0.76 Insulation material Model Para 25-130/9-87/IPWM1-3; SHIMGE APM25-9-130 Type Inverter Control Power supply 1~ 230V 50Hz Maximum head...

  • Page 40: Safety And Control Device

    General data 2.5 Safety and control Device Compressor protection The compressor is protected by the following devices and their combinations. (1) High pressure switch: This switch cuts out the operation of the compressor when the discharge pressure exceeds the setting. (2) Low pressure switch: This switch cuts out the operation of the compressor when the suction pressure exceeds the setting.

  • Page 41: Hi-Therma Monobloc

    General data 2.5.3 Hi-Therma Monobloc Outdoor part MODEL 044(2.0HP)/080(3.0HP) Pressure switches Automatic reset, non-adjustable Cut-out 4.4±0.15 High Cut-in 3.40±0.2 Cut-out 0.05±0.03 For compressor Cut-in 0.15±0.03 Fuse capacity on PCB6 (F201) 220-240V ~ 50Hz CCP timer Non adjustable Setting time For condenser fan motor Internal Thermostat Automatic Reset, Non-Adjustable Indoor part...

  • Page 42: Capacity And Selection Data

    Capacity and selection data 3. Capacity and selection data 3.1 Hi-Therma Split/Integra 3.1.1 Maximum heating capacity table (kW) Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 3.64 2.00 3.65 1.95 4.20 1.89 3.84...
  • Page 43 Capacity and selection data Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 4.14 2.45 4.47 2.49 5.10 2.40 4.46 2.34 4.86 2.36 5.34 2.24 4.03 2.53 4.38 2.40 4.76 2.27 5.24 2.23 5.52...
  • Page 44 Capacity and selection data Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 5.10 3.43 5.76 3.55 6.40 3.17 5.34 3.19 6.00 2.99 6.49 2.92 4.84 3.07 5.25 2.99 5.71 2.95 6.31 2.86 6.68...

  • Page 45: Maximum Cooling Capacity Table (Kw)

    Capacity and selection data 3.1.2 Maximum cooling capacity table (kW) Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 7.85 0.94 7.65 0.96 7.24 0.99 7.22 0.91 7.14 0.95 7.06 0.98 6.97 1.00 6.89...
  • Page 46 Capacity and selection data Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 10.44 1.35 10.22 1.50 10.01 1.62 10.08 1.19 9.94 1.31 9.79 1.44 9.50 1.57 9.36 1.68 9.33 1.25 9.14 1.37 8.96...

  • Page 47: Hi-Therma Monobloc

    Capacity and selection data 3.2 Hi-Therma Monobloc 3.2.1 Maximum heating capacity table (kW) Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 3.64 2.00 3.65 1.95 4.20 1.89 3.84 1.93 4.23 1.91 4.34 1.85...
  • Page 48 Capacity and selection data Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 5.10 3.43 5.76 3.55 6.40 3.17 5.34 3.19 6.00 2.99 6.49 2.92 4.84 3.07 5.25 2.99 5.71 2.95 6.31 2.86 6.68...

  • Page 49: Maximum Cooling Capacity Table (Kw)

    Capacity and selection data 3.2.2 Maximum cooling capacity table (kW) Ambient temperature (°C WB) Water outlet temp (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (kW) (°C) 7.85 0.94 7.65 0.96 7.24 0.99 7.22 0.91 7.14 0.95 7.06 0.98 6.97 1.00 6.89...

  • Page 50: Correction Factors

    Capacity and selection data 3.3 Correction factors 3.3.1 Piping length correction factor The correction factor is based on the equivalent piping length in metres (EL) and the height difference between outdoor unit and indoor unit in metres (H). H: Height difference between indoor unit and outdoor unit (m). - H>0: Outdoor unit is placed higher than indoor unit (m).
  • Page 51 Capacity and selection data ◆ Heating piping length correction factor Heating 2.0HP 2.5HP 3.0HP ◆ Heating piping length correction factor Cooling 2.0HP 2.5HP 3.0HP...

  • Page 52: Correction Factor Owing To Use Of Glycol (Only For Hi-Therma Monobloc)

    Capacity and selection data 3.3.2 Correction factor owing to use of glycol (only for Hi-Therma Monobloc) Application at low ambient temperature When the ambient temperature is low in winter, the water in the pipes and circulating pump may freeze and damage the pipes and water pumps during shutdown periods.

  • Page 53: Correction Factor Owing To Defrosting Operation

    Capacity and selection data 3.3.3 Correction Factor owing to defrosting operation The heating capacity in the preceding paragraph does not include defrost operation periods. Therefore, capacity should be corrected as follows: Corrected Heating Capacity = Correction Factor x Heating Capacity Outdoor Inlet Air Temp.

  • Page 54: Selection Method

    Capacity and selection data 3.4 Selection method To select the outdoor units, it will be necessary to consult and/or use a series of parameters shown in tables and graphics presented in the different chapters of this handbook. A summarized list is shown below: For cooling and heating maximum capacities: refer to chapters 3.1&3.2.
  • Page 55 Capacity and selection data (1) Calculate the building demand load Calculate the building demand load according to the local climatic conditions. The building’s location, insulation and the other essential paremeters should be taken into account. The calculation procedure should be performed by professionals.

  • Page 56: Acoustic Characteristic Curves

    Acoustic characteristic curves 4. Acoustic characteristic curves 4.1 Considerations 1. Distance of the unit from the measuring point, as shown in the figure below. Outdoor unit Split Indoor unit...
  • Page 57 Acoustic characteristic curves Integra Indoor unit 2. The data is measured in an anechoic chamber, so reflected sound should be taken into consideration when installing the unit. 3. The sound measured with the curve A shown in dB(A) represents the attenuation in function of frequency as perceived by the human ear.

  • Page 58: Sound Pressure Level

    Acoustic characteristic curves 4.2 Sound pressure level AHW-044HCDS1 AHW-060HCDS1 NC-70 NC-70 NC-65 NC-65 NC-60 NC-60 Heating Heating NC-55 NC-55 Cooling Cooling NC-50 NC-50 Low Noise-Cooling NC-45 NC-45 NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 Low Noise-Heating Low Noise-Heating Low Noise-Cooling NC-25 NC-25 NC-20 NC-20...

  • Page 59: Working Range

    Working range 5. Working range 5.1 Power supply working range Nominal power supply Single phase: 220-240V~ 50Hz Operating voltage Between 90 and 110% of the nominal voltage. Starting voltage Always higher than 85% of the nominal voltage. 5.2 Temperature working range Model 44(2.0HP) 60(2.5HP)

  • Page 60: Dhw

    Working range 5.2.2 DHW 5.2.3 Swimming pool...

  • Page 61: Space Cooling

    Working range 5.2.4 Space cooling...

  • Page 62: Hydraulic Working Range

    Working range 5.3 Hydraulic working range 5.3.1 Hydraulic data ● Hi-Therma Split Model 044 (2.0HP) 060 (2.5HP) 080 (3.0HP) Minimum water flow rate (*1) Maximum water flow rate (*1) 1.75 1.75 Minimum allowable water pressure Maximum allowable water pressure ● Hi-Therma Integra Model 044 (2.0HP) 060 (2.5HP)
  • Page 63 Working range GRUNDFOS UPM4K 15-75 130 44(2.0HP) / 60(2.5HP) 80(3.0HP) External Static External Static pressure pressure Internal Internal pressure drop pressure drop Water flow(m Water flow(m Integra SHIMGE APM25-9-130 44(2.0HP) / 60(2.5HP) 80(3.0HP) 10.0 10.0 0.4 0.6 Water flow(m Water flow(m Monobloc WILO Para 25-130/9-87/IPWM1-3 44(2.0HP)
  • Page 64 Working range SHIMGE APM25-9-130 44(2.0HP) 80(3.0HP) 10.0 External Static pressure Internal pressure drop 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 Water flow(m Water flow(m NOTE ● If a water flow rate is selected out of the working range of the unit, it can cause malfunction on the unit. Please, try to operate the pump within the minimum and maximum water flow of the indoor unit.

  • Page 65: General Dimensions

    General dimensions 6. General dimensions 6.1 Hi-Therma Split/Integra Outdoor Unit 6.1.1 Dimensional Data of Hi-Therma Split/Integra Outdoor Unit Liquid Stop Valve Gas Stop Valve...

  • Page 66: Structure Of Hi-Therma Split/Integra Outdoor Unit

    General dimensions 6.1.2 Structure of Hi-Therma Split/Integra Outdoor Unit Mark Part Name Fan Motor Propeller Fan Electrical Box Compressor Discharge Gas Thermistor(Td) Compressor Gas Stop Valve Liquid Stop Valve Terminal Board for Power Supply(TB1) Terminal Board for Transmission(TB2) High Pressure Switch(PSH) 4-way Reversing Valve and Coil Low Pressure Switch(PSL) Accumulator...

  • Page 67: Hi-Therma Split Indoor Unit

    General dimensions 6.2 Hi-Therma Split Indoor Unit 6.2.1 Dimensional Data of Hi-Therma Spit Indoor Unit...

  • Page 68: Structure Of Hi-Therma Indoor Unit

    General dimensions 6.2.2 Structure of Hi-Therma Indoor Unit Side view Front view Charge port Bottom view Mark Part name Mark Part name Auxiliary Electric Heater(AEH) Refrigerant Gas Pipe Air purge valve Drain Pan Electric Heater Thermostat Gas Refrigerant Pipe Thermistor(Tg) Safety valve Water Pressure Sensor(Pw) Drain pipe for safety valve...

  • Page 69: Hi-Therma Integra Indoor Unit

    General dimensions 6.3 Hi-Therma Integra Indoor Unit 6.3.1 Dimensional Data of Hi-Therma Integra Indoor Unit...

  • Page 70: Structure Of Hi-Therma Integra Indoor Unit

    General dimensions 6.3.2 Structure of Hi-Therma Integra Indoor Unit Mark Part Name Mark Part Name Mark Part Name Auxiliary Electric Heater(AEH) Space Heating/Cooling Water Outlet Outlet Water Thermistor(Tow) Air purge valve DHW Inlet (Cold Water) Back Panel Safety valve Electrical Box Top Panel Drain pipe for safety valve Safety Thermostat...

  • Page 71: Hi-Therma Monobloc

    General dimensions 6.4 Hi-Therma Monobloc 6.4.1 Dimensional Data of Hi-Therma Monobloc...

  • Page 72: Structure Of Hi-Therma Monobloc

    General dimensions 6.4.2 Structure of Hi-Therma Monobloc Rear View Charge port Number Part name Number Part name Heat Exchanger Heat Exchanger Liquid Pipe Thermistor(Te) Compressor Heat Exchanger Liquid Pipe Thermistor2(Te2) 4-way Reversing Valve and Coil Gas Refrigerant Pipe Thermistor(Tg) Strainer Liquid Refrigerant Pipe Thermistor(TL) Electronic Expansion Valve and Coil Inlet Water Thermistor(Tiw)

  • Page 73: Refrigerant Cycle And Hydraulic Circuit

    Refrigerant cycle and hydraulic circuit 7. Refrigerant cycle and hydraulic circuit 7.1 Refrigerant cycle and hydraulic circuit of Hi-Therma Split Part name Part name Part name Part name High Pressure Switch Pressure Adjustment Valve of Liquid Refrigerant Pipe Compressor (PSH) Expansion Vessel Thermistor (TL) Heat exchanger...

  • Page 74: Refrigerant Cycle And Hydraulic Circuit Of Hi-Therma Integra

    Refrigerant cycle and hydraulic circuit 7.2 Refrigerant cycle and hydraulic circuit of Hi-Therma Integra Part name Part name Part name Part name Part Name Part Name Pressure High Pressure Adjustment Valve Liquid Refrigerant DHW Thermistor Stop for Drainage Compressor Switch (PSH) of Expansion Pipe Thermistor (TL) (TDHW)

  • Page 75: Refrigerant Cycle And Hydraulic Circuit Of Hi-Therma Monobloc

    Refrigerant cycle and hydraulic circuit 7.3 Refrigerant cycle and hydraulic circuit of Hi-Therma Monobloc Part name Part name Part name Part name Outdoor Unit Ambient Outlet Water Thermistor Compressor Low Pressure Switch (PSL) Thermistor (Ta) (Tow) Compressor Discharge Gas Heat Exchanger 10 Accumulator 26 Water Pressure Sensor (Pw) Thermistor (Td)

  • Page 76: Installation

    Within the policy of continuous improvement of its products, Hisense reserves the right to make changes at any time without prior notification and without being compelled to introducing them into products previously sold. This ●...

  • Page 77: Additional Information About Safety

    Installation 8.1.2.2 ADDITIONAL INFORMATION ABOUT SAFETY ● Without reading the installation manual, do not carry out refrigerant piping connection, water piping connection and ● DO NOT CONNECT THE POWER SUPPLY TO THE INDOOR wiring connection. UNIT PRIOR TO FILLING THE SPACE HEATING CIRCUIT ●...

  • Page 78: Important Notice

    If this is not the case, contact with your dealer. (EQU.1) = (m /(2.5*LFL^ (5/4) ● Hisense pursues a policy of continuous improvement in ● : Minimum installation area of an Indoor unit for a given product design and performance. The right is therefore refrigerant charge m (kg) and considering the installation reserved to vary specifications without notice.

  • Page 79: Before Operation

    Installation ● Install the unit in a place where in case of water leakage, any damage to the installation space cannot ● Do not charge OXYGEN, ACETYLENE, or other flammable be produced. and poisonous gases into the refrigerant because an explosion ●...

  • Page 80: Factory-Supplied Indoor Unit Components

    Installation 8.1.4.2 FACTORY-SUPPLIED INDOOR UNIT COMPONENTS Accessory Image Qty. Remarks For hanging the unit on the Wall support wall Six gaskets for each connections between the Gasket indoor unit and shutoff valves (inlet/outlet) Connect at the water inlet/ Shut-off valve outlet of indoor unit, used (G1”) to shut off the water flow.

  • Page 81: General Dimensions

    Installation 8.1.5 GENERAL DIMENSIONS Unit: mm 8.1.5.1 SERVICE SPACE >70 >70 H: 1200~1500 mm Recommended unit height for proper access to the controller. h: 350 mm Minimum unit height for installing the shut-off valves and the first bending pipe line. 8.1.5.2 DIMENSIONAL DATA...

  • Page 82: Installation Of Hi-Therma Split Indoor Unit

    Installation 8.1.6 Installation of Hi-Therma Split Indoor Unit 2. Remove the front panel. 8.1.6.1 MAIN PARTS (DESCRIPTIONS) 2 Push the front panel forward, disengage the snap, and front panel can be removed. Part Indoor unit front panel Indoor unit surrounding panel Master controller &...
  • Page 83 Installation 8.1.6.2.3 Hanging the master controller The master controller can be hung on the handle of the electrical box cover. Unscrew The electrical box cover can be turned about 160°. 4 The electrical box can be turned about 88°. Take care with the electrical box components in order to avoid damaging.

  • Page 84: Wall Mounting

    Installation 8.1.6.3 WALL MOUNTING Installation procedure 1 Wall mounting procedure 2 Water piping connection 3 Drain pipes connection 4 Refrigerant piping connection 5 Power and transmission wiring connection 6 Cover assembly 7 Test and check Wall mounting procedure Make sure the wall has adequate strength to hang weight of the indoor unit. 1.
  • Page 85 Installation 3. Fix the indoor unit to the wall support using the two M5 bolts (factory-supplied accessory). all support indoor unit...

  • Page 86: Piping Work

    Installation 8.1.7 PIPING WORK ● Location of Refrigerant and Water Pipeline are shown Make sure that refrigerant piping installation complies with below. the legislation EN378 and local legislation. 8.1.7.1 GENERAL NOTES BEFORE PERFORMING PIPING WORK ● Prepare locally-supplied copper pipes. ●...
  • Page 87 Installation (2) Install shut-off valves (3) Additional water strainer A shut-off valve and a shut-off valve with filter are provided with the unit. For convenience of repair and maintenance, install the shut-off valve with filter on water ● Provide a 50 mesh or more water strainer at the water inlet inlet pipe and the shut-off valve on water outlet pipe of side of water piping.

  • Page 88: Space Heating And Dhw

    Installation 8.1.8 SPACE HEATING AND DHW ● A water check valve (15) with a shut-off valve (16) must be connected to the water filling point when filling the 8.1.8.1 ADDITIONAL HYDRAULIC NECESSARY water circuit. The check valve acts as a safety device to ELEMENTS protect the installation.

  • Page 89: Requirements And Recommendations For Hydraulic Circuit

    Installation ● If machine is stopped for a long period of time in winter, drain out water in circuit and water pipes to prevent The discharge pipe should always be open to the atmosphere, free freezing. of frost and in continuous slope to the down side in case that water ●...

  • Page 90: Water Filling

    Installation 8.1.8.2.4 Additional Information about HYDRAULIC 8.1.8.3 WATER FILLING CIRCUIT (1) Check that a water check valve (field supplied) with ● An additional special water filter is highly recommended a shutoff valve (field supplied) is connected to the to be installed on the space heating (field installation), water filling point (water inlet connection) for filling in order to remove possible particles remaining from the hydraulic circuit (see “8.1.8.1 Additional hydraulic...
  • Page 91 Installation ● The unit is equipped with an automatic air purge valve (factory supplied) at the highest location of the unit. Anyway, if there are higher points in the water installation, air might be trapped inside water pipes, which could cause system malfunction. In that case, additional air purge valves (field supplied) should be installed to ensure no air enters into the water circuit.
  • Page 92 Installation (9) Check Water Volume: ● The process of calculating allowed maximum water The unit has a built-in 8L expansion vessel, and default volume in whole circulation is: initial pressure is 1 bar. To ensure the unit works Calculate maximum water volume corresponding to initial normally, the initial pressure of expansion vessel should pressure Pg by using maximum water volume curve as be adjusted according to the circulated water volume.

  • Page 93: Dhw Tank Selection And Installation

    Installation 8.1.8.4 DHW TANK SELECTION AND INSTALLATION - Calculation of T: The temperature of the DHW tank refers to the temperature of the accumulated water inside the tank, prior to operation. This temperature is usually between 45 °C and 65 °C. It has ●...
  • Page 94 Installation 3 Structural Drawings For different storage capacity, the structural design of the The typical structure of the DHW tank is shown as below (only DHW tank may be different. The parameters of the typical for example): structure shown in the left are recommended as follows: Recommended Ref.
  • Page 95 Installation 8.1.8.4.2 Safety device ● Temperature Protection Switch / Temperature fuse (THe1) is connected in the DHW electric heater power 1 Temperature pressure valve supply circuit, which can directly cut off the power A temperature pressure valve which fit with local national supply of DHW electric heater when DHW temperature requirements should be installed together with DHW tank to exceeds the protection value.

  • Page 96: Water Control

    Installation 8.1.8.5 WATER CONTROL It is necessary to analyse the quality of water by checking ● DHW tank supplies hot water from tap water. Domestic hot pH, electrical conductivity, ammonia ion content, sulphur water is only used when tap water is connected. content, and others.

  • Page 97: Electrical And Control Settings

    Installation 8.1.9 Electrical and control settings 8.1.9.1 General check (1) Ensure all electrical apparatus used on site (power switch, circuit breaker, lead, conduit and terminal board) are selected according to technical manual and national and local codes. Wiring must be made according to national and local codes. (2) Check voltage is within rated voltage ±...

  • Page 98: Wiring

    Installation 8.1.9.2 WIRING 1. The electrical box inner wiring and wire fixing shall be operated as shown below. All wires shall be firmly fixed with fixing clamps, and ensure that each wire is reliably grounded. All wires shall be firmly fixed with fixing clamps, and ensure that each wire is reliably grounded.
  • Page 99 Installation 2. The wiring route outside electrical box, as below. The clamp for wiring 3. All wires enter the unit. Electric wire goes into the indoor unit The clamp for wiring...

  • Page 100: Terminal Board Connections

    Installation 8.1.9.3 TERMINAL BOARD CONNECTIONS 8.1.9.3.1 Indoor / outdoor transmission wiring ● The transmission is wired to terminals 1-2. ● The shielding layer shall be grounded. Indoor unit Outdoor unit TB4 on PCB4 Fixed clamps Shielded cable ● Use twist pair wires (0.75 mm²) for transmission wiring between outdoor unit and indoor unit. The wiring must consist of 2-core wires (Do not use wire with more than 3 cores).
  • Page 101 Installation 8.1.9.3.3 Wiring of DHW The electric heater of the DHW tank needs to meet the relevant Electrical wiring must be performed by professional technician requirements of local laws and regulations. It is necessary to protect according to national regulations. it through a temperature fuse and a temperature protection switch.

  • Page 102: Optional Indoor Unit Wiring (Accessories)

    Installation 8.1.9.4 OPTIONAL INDOOR UNIT WIRING (ACCESSORIES) Inputs and outputs printed on the board are the setting before shipment options. By means of the master controller, some other inputs and output functions can be configured and used.
  • Page 103 Installation Input - Setting before shipment Mark Description Default settings Available input codes Terminals Specification i - 08 i - 00~17 I1, L1 Closed/Open Input 1 (Demand ON/OFF 1) (Except i - 07/12) on TB3 220-240V ~ 50/60Hz i - 13 i - 00~17 I2, +12V Input 2...
  • Page 104 Installation Input - All input codes descriptions: Input codes Mark Description i - 00 No Function This function must be used to stop or limit the heat pump and Auxiliary electric heater when restricted by Electric company. It allows an external Smart switch device to switch Smart Act./ off or reduce consumption of the heat pump and Auxiliary electric heater during time of i - 02...
  • Page 105 Installation Output - Setting before shipment Mark Description Default settings Available output codes Terminals Specification L2, N6 Power supply ON/OFF on TB3 o - 01 o - 00 ~ 29 Output 1 220-240V ~ 50/60Hz (3WV SWP) (Except o - 02/08/17/21) Max.
  • Page 106 Installation Output - All output codes descriptions: Output codes Mark Description o - 00 No Function In case of combining Unit with swimming pool, this output is used to drive 3-way valve diverting o - 01 3WV SWP to the swimming pool heat exchanger. Output ON signal when swimming pool function is operating.
  • Page 107 Installation Auxiliary sensor - Setting before shipment Mark Description Default settings Available auxiliary sensor codes Auxsensor 1 a - 01 (Tow3) a - 00 ~ 13 Auxsensor 2 a - 03 (Tsolar) a - 00 ~ 13 Auxsensor 3 a - 02 (Tswp) a - 00 ~ 13 Auxsensor 4 a - 05 (Tow2)

  • Page 108: Setting Of Dip Switches On Pcb1

    Installation 8.1.9.5 SETTING OF DIP SWITCHES ON PCB1 Water pump mode when Thermo OFF ON: Operate periodically OFF: Operate constantly ● The mark “■” indicates the dip switches positions. ● No mark “■” indicates pin position is not affected. Manual emergency setting ●...

  • Page 109: Test Run

    Installation 8.1.10 TEST RUN ● The unit starts only when all check points are cleared up. ● Pay attention when system is running: NEVER operate the unit without careful inspection. (A) Do not touch any parts of discharge pipelines, because the 8.1.10.1 CHECKLIST BEFORE TEST RUN discharge temperature of compressor can be more than 90°C.

  • Page 110: Installation Of Hi-Therma Integra Indoor Unit

    Within the policy of continuous improvement of its products, following them, as your safety and that of others depends on Hisense reserves the right to make changes at any time without prior notification and without being compelled to introducing them into products previously sold. This document may therefore have been subject to amendments ●...

  • Page 111: Additional Information About Safety

    Installation 8.2.2.2 ADDITIONAL INFORMATION ABOUT SAFETY ● Without reading the installation manual, do not carry out refrigerant piping connection, water piping connection and wiring connection. ● DO NOT CONNECT THE POWER SUPPLY TO THE INDOOR ● Check whether the earth wire connection is correct and firm. UNIT PRIOR TO FILLING THE SPACE HEATING CIRCUIT ●...

  • Page 112: Important Notice

    /(2.5*LFL^ (5/4) included. If this is not the case, contact with your dealer. ● Hisense pursues a policy of continuous improvement in ● : Minimum installation area of an Indoor unit for a given product design and performance. The right is therefore...

  • Page 113: Before Operation

    Installation ● Install the unit in a place where in case of water leakage, any damage to the installation space cannot ● Do not charge OXYGEN, ACETYLENE, or other flammable be produced. and poisonous gases into the refrigerant because an explosion ●...

  • Page 114: Factory-Supplied Indoor Unit Components

    Installation 8.2.4.2 FACTORY-SUPPLIED INDOOR UNIT 3 Remove the 4 L-shaped feet at 4 corners,and then remove COMPONENTS the indoor unit from wooden pallets, and place it carefully on the floor, as near as possible to its final location. Accessory Image Qty.

  • Page 115: General Dimensions

    Installation 8.2.5 GENERAL DIMENSIONS Unit: mm 8.2.5.1 SERVICE SPACE ≥600 8.2.5.2 DIMENSIONAL DATA Unit: mm...

  • Page 116: To Handle The Unit

    Installation 8.2.6 TO HANDLE THE UNIT ● Carefully tilt the unit to the back so that the handles become visible. ● Use the handles at the back and at the bottom to carry the unit. View from 1 ● Two people are required when handling because of the weight of the unit. Two handles at the back of the unit View from 2 Two handles at the bottom of the unit...

  • Page 117: Unit Installation

    Installation 8.2.7 Unit Installation ● To prevent the indoor unit from tipping, it is 8.2.7.1 MAIN PARTS (DESCRIPTIONS) recommended to fix the unit on the ground by four L-shaped feet with 8 anchor bolts (M6). Part Indoor unit L-shaped feet Upper front panel (4 parts) Anchor bolts...
  • Page 118 Installation 2. Remove the upper front panel. 2 Push the front panel forward, disengage the snap, and upper front panel can be removed. 1 Push the front panel upward. Step 2 The electrical box cover can be opened about 120°. release the upper front panel.
  • Page 119 Installation 8.2.7.3.3 Hanging the master controller The master controller can be hung on the handle of the electrical box cover. 93° Step 1 Unscrew the 1 screw. Take care with the electrical box components in order to avoid damaging. Step 2 Rotate the controller frame clockwise to separate controller frame and front panel.

  • Page 120: Piping Work

    Installation 8.2.8 PIPING WORK 4 Complete hanging. Make sure that refrigerant piping installation complies with the legislation EN378 and local legislation. 8.2.8.1 GENERAL NOTES BEFORE PERFORMING PIPING WORK ● Prepare locally-supplied copper pipes. ● Select the piping size with the correct thickness and correct material able to withstand sufficient pressure.

  • Page 121: Refrigerant Piping Connection

    Installation ● Location of Refrigerant and Water Pipeline are shown 8.2.8.3 WATER PIPING CONNECTION below. ● Piping connection size of indoor unit. Space Space Unit: mm heating/ DHW Outlet DHW Inlet heating/ cooling (Hot Water) (Cold Water) cooling water Model water inlet outlet 044(2.0HP)
  • Page 122 Installation Step 1 Insert the drain pipe for the safety valve into the drain pipe for the indoor unit. ● Rubber gasket must be mounted (factory supplied), otherwise valve water leakage may be caused. ● Note the location of shut-off valves, and the direction of shut-off valves and drain valve, which are essential to maintenance.
  • Page 123 Installation 8.2.8.3.3 DHW pipes connection 8.2.8.3.4 To insulate the water piping ● The connection between the DHW installation and ● The piping in the complete water circuit MUST be the DHW connections of the indoor unit must be done insulated to prevent condensation during cooling taking into account the following considerations: operation and reduction of the heating and cooling capacity.

  • Page 124: Space Heating/Cooling And Dhw

    Installation 8.2.9 SPACE HEATING/COOLING AND DHW ● 3-way valves (6) must be connected at one point of the water outlet pipe of the installation, used to divert the 8.2.9.1 ADDITIONAL HYDRAULIC NECESSARY water circulation for specific functions. ELEMENTS ● Space heating thermistor (7) must be installed on the metal tube close to space heating, and keep in good contact with it.
  • Page 125 Installation Specifications for pressure relief valve (6) (Factory supplied): Relief Pressure: 0.7± 0.05 MPa When scales are removed, temperature in DHW tank Water flow rate: may be a little high, it should prevent burns or drainage Pressure difference 0.05 0.10 0.30 equipment damaged.

  • Page 126: Requirements And Recommendations For Hydraulic Circuit

    Installation 8.2.9.2 REQUIREMENTS AND RECOMMENDATIONS for ● To calculate minimum water volume the internal water volume HYDRAULIC CIRCUIT of the unit is NOT included. 8.2.9.2.1 Requirements for anti-freezing ● Consult with local technical engineer under the special ● When the unit is stopped during shut-off periods and occasions where operation water temperature in single water the ambient temperature is very low, the water inside circuit of space heating is lower than 20°C.

  • Page 127: Water Filling

    Installation ● The unit is equipped with an air purge valve (factory 8.2.9.3 WATER FILLING supplied) at the highest location of the unit. If this 8.2.9.3.1 To fill the water circuit location is not the highest of the water installation, air (1) Check that a water check valve (field supplied) with might be trapped inside the water pipes, which could a shut-off valve (field supplied) is connected to the...
  • Page 128 Installation ● The unit is equipped with an automatic air purge valve (factory supplied) at the highest location of the unit. Anyway, if there are higher points in the water installation, air might be trapped inside water pipes, which could cause system malfunction. In that case, additional air purge valves (field supplied) should be installed to ensure no air enters into the water circuit.
  • Page 129 Installation (9) Check Water Volume: ● The process of calculating allowed maximum water The unit has a built-in 8L expansion vessel, and default volume in whole circulation is: initial pressure is 1 bar. To ensure the unit works Calculate maximum water volume corresponding to normally, the initial pressure of expansion vessel should initial pressure Pg by using maximum water volume be adjusted according to the circulated water volume.
  • Page 130 Installation 8.2.9.3.2 To fill and drain the domestic hot water tank (10) To fill the domestic hot water tank 3 Push the front panel forward, ● Open every hot water tap in turn to purge air from the disengage the snap, and lower front panel can be system pipe work.

  • Page 131: Water Control

    Installation 8.2.9.4 WATER CONTROL It is necessary to analyze the quality of water by checking ● Water should be subjected to filtration or to a softening pH, electrical conductivity, ammonia ion content, sulphur treatment with chemicals before application as treated water. content, and others.
  • Page 132 Installation The storage capacity of the DHW tank depends on the daily water demand and the combination method. The daily water demand is estimated with the following calculation formula for consumption: (T)= D (60 °C) x (60-T / T-T Where: Water demand at T temperature (T): Domestic hot water demand at 60 °C...

  • Page 133: Electrical And Control Settings

    Installation 8.2.10 ELECTRICAL AND CONTROL SETTINGS 8.2.10.1 GENERAL CHECK (1) Ensure all electrical apparatus used on site (power switch, circuit breaker, lead, conduit and terminal board) are selected according to technical manual and national and local codes. Wiring must be made according to national and local codes. (2) Check voltage is within rated voltage ±...

  • Page 134: Wiring

    Installation 8.2.10.2 WIRING 1. The electrical box inner wiring and wire fixing shall be operated as shown below.
  • Page 135 Installation 2. The wiring route outside electrical box, as below. Electric wire goes into the indoor unit Hole for wiring All wires shall be firmly fixed with clamps.

  • Page 136: Terminal Board Connections

    Installation 8.2.10.3 TERMINAL BOARD CONNECTIONS 8.2.10.3.1 Indoor / outdoor transmission wiring ● The transmission is wired to terminals 1-2. ● The shielding layer shall be grounded. Indoor unit Outdoor unit TB4 on PCB4 Fixed clamps Shielded cable ● Use twist pair wires (0.75 mm²) for transmission wiring between outdoor unit and indoor unit. The wiring must consist of 2-core wires (Do not use wire with more than 3 cores).

  • Page 137: Optional Indoor Unit Wiring (Accessories)

    Installation 8.2.10.4 OPTIONAL INDOOR UNIT WIRING (ACCESSORIES) Inputs and outputs printed on the board are the setting before shipment options. By means of the master controller, some other inputs and output functions can be configured and used.
  • Page 138 Installation Input - Setting before shipment Mark Description Default settings Available input codes Terminals Specification i - 08 i - 00~17 I1, L1 Closed/Open Input 1 (Demand ON/OFF 1) (Except i - 07/12) on TB3 220-240V ~ 50Hz i - 13 i - 00~17 I2, +12V Closed/Open...
  • Page 139 Installation Input - All input codes descriptions: Input codes Mark Description i - 00 No Function This function must be used to stop or limit the heat pump and Auxiliary electric heater when restricted by Electric company. It allows an external Smart switch device to switch Smart Act./ off or reduce consumption of the heat pump and Auxiliary electric heater during time of i - 02...
  • Page 140 Installation Output - Setting before shipment Mark Description Default settings Available output codes Terminals Specification L2, N6 Power supply ON/OFF on TB3 o - 01 o - 00 ~ 30 Output 1 220-240V ~ 50Hz (3WV SWP) (Except o - 02/08/17/21) Max.
  • Page 141 Installation Output - All output codes descriptions: Output codes Mark Description o - 00 No Function In case of combining Unit with swimming pool, this output is used to drive 3-way valve diverting o - 01 3WV SWP to the swimming pool heat exchanger. Output ON signal when swimming pool function is operating.
  • Page 142 Installation Auxiliary sensor - Setting before shipment Mark Description Default settings Available auxiliary sensor codes Auxsensor 1 a - 01 (Tow3) a - 00 ~ 14 Auxsensor 2 a - 03 (Tsolar) a - 00 ~ 14 Auxsensor 3 a - 02 (Tswp) a - 00 ~ 14 Auxsensor 4 a - 05 (Tow2)

  • Page 143: Setting Of Dip Switches On Pcb1

    Installation 8.2.10.5 SETTING OF DIP SWITCHES ON PCB1 Water pump mode when Thermo OFF ON: Operate periodically OFF: Operate constantly ● The mark “■” indicates the dip switches positions. ● No mark “■” indicates pin position is not affected. Manual emergency setting ●...

  • Page 144: Test Run

    Installation 8.2.11 TEST RUN ● The unit starts only when all check points are cleared up. ● Pay attention when system is running: NEVER operate the unit without careful inspection. (A) Do not touch any parts of discharge pipelines, because the 8.2.11.1 CHECKLIST BEFORE TEST RUN discharge temperature of compressor can be more than 90°C.

  • Page 145: Technical Parameters

    Reference annual heating Sound power level , indoor/ 9119 42/61 dB(A) demand outdoor measured Annual energy consumption 1824 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 146 Reference annual heating Sound power level , indoor/ 7944 42/61 dB(A) demand outdoor measured Annual energy consumption 2457 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 147 Reference annual heating Sound power level , indoor/ 12507 42/62 dB(A) demand outdoor measured Annual energy consumption 2539 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 148 Reference annual heating Sound power level , indoor/ 11032 42/62 dB(A) demand outdoor measured Annual energy consumption 3312 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 149 Reference annual heating Sound power level , indoor/ 13441 42/64 dB(A) demand outdoor measured Annual energy consumption 2732 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 150 Reference annual heating Sound power level , indoor/ 12081 42/64 dB(A) demand outdoor measured Annual energy consumption 3536 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...

  • Page 151: Installation Of Hi-Therma Split/Integra Outdoor Unit

    ● Within the policy of continuous improvement of its by control of flammable material. products, Hisense reserves the right to make changes ● Checking for presence of refrigerant at any time without prior notification and without being...
  • Page 152 Installation - The ventilation machinery and outlets are operating - Intrinsically safe components are the only types adequately and are not obstructed. that can be worked on while live in the presence of a - If an indirect refrigerating circuit is being used, the flammable atmosphere.
  • Page 153 Installation ● Charging procedures ● Labelling - Ensure that contamination of different refrigerants - Equipment shall be labelled stating that it has been does not occur when using charging equipment. Hoses decommissioned and emptied of refrigerant. The label or lines shall be as short as possible to minimise the shall be dated and signed.

  • Page 154: Safety

    Installation 8.3.2 SAFETY Symbol Explanation 8.3.2.1 APPLIED SYMBOLS Before installation, read the installation and ● During normal heat pump system design work or unit operation manual, and the wiring instruction sheet. installation, greater attention must be paid in certain Before performing maintenance and service tasks, situations requiring particular care in order to avoid read the service manual.
  • Page 155 Installation ● Means for disconnection from the supply mains, which ● If the supply cord is damaged, it must be replaced by the have a contact separation in all poles that provide full manufacturer, its service agent or similarly qualified persons in disconnection under overvoltage category III conditions, order to avoid a hazard.

  • Page 156: Important Notice

    ● Be aware that the R32 refrigerants does not contain included. If this is not the case, contact your distributor. an odour. ● Hisense pursues a policy of continuing improvement in design and performance of products. The right is therefore reserved to vary specifications without notice.

  • Page 157: Transportation And Handling

    Installation 8.3.4 TRANSPORTATION AND HANDLING 8.3.5 BEFORE OPERATION Transport the product as close to the installation location as possible before unpacking. ● When the system is started after a shut-off longer that approximately 3 months, it is recommended to check the system by your service contractor.

  • Page 158: General Dimensions

    Installation 8.3.6 GENERAL DIMENSIONS Unit: mm...

  • Page 159: Unit Installation

    Installation 8.3.7 UNIT INSTALLATION ● Install the unit with sufficient clearance around it for ● Install the unit in the shade or not exposed to direct sunshine operation and maintenance. Install the unit where good or direct radiation from high temperature heat source. ventilation is available.
  • Page 160 Installation a) In case of front side and either of the sides are open (single unit) ≤ ≤ ≥ ≤ e) In case that front side and either of the sides are open (serial units) ≤ ≤ ≥ ≤ ≥ ≤...

  • Page 161: Installation Place Provision

    Installation 8.3.7.2 INSTALLATION PLACE PROVISION ● Secure the outdoor unit with the anchor bolts. ● The whole of the base of the outdoor unit should be installed on a foundation. When using vibration-proof Air Flow Direction mat, it should also be positioned in the same way. When installing the outdoor unit on a field-supplied frame, use metal plates to adjust the frame width for stable installation as shown in figure.

  • Page 162: Drain Piping

    Installation 8.3.7.3 DRAIN PIPING 8.3.8 REFRIGERANT PIPING WORK When the base of the outdoor unit is temporarily utilized as a drain receiver and the drain water in it is discharged, one Make sure that refrigerant piping installation complies with drain nozzle is needed. the legislation EN378 and local legislation.

  • Page 163: Piping Size

    Installation 8.3.8.2 PIPING SIZE ● The pipe between outdoor unit and indoor unit ● Outdoor unit Total Piping length Capacity Gas pipe(mm) Liquid pipe(mm) Stop valve(mm) L(m) Gas Pipe Liquid Pipe 5≤ L <10 Φ9.53 Φ12.7 Φ12.7 Φ6.35 (2.0HP) 10≤ L ≤40 Φ6.35 5≤...

  • Page 164: Piping Connection

    Installation 8.3.8.3 PIPING CONNECTION 8.2.8.3.1 OUTDOOR UNIT STOP VALVE 1. Take the piping cover away from the unit. Stop valve Spindle Type (liquid) Stop valve (gas) ① Spindle valve ② Flare nut ③ Cap ④ Check joint Closed upon factory shipping Piping cover Check joint 2.

  • Page 165: Air-Tightness Test Xiii

    Installation 8.3.8.4 AIR-TIGHTNESS TEST 1. Connect the manifold gauge using charging hoses with a 3. After vacuum pumping work, stop the manifold gauge’s nitrogen cylinder to the check joint of the gas stop valve. valve, stop the vacuum pump and leave it for one Apply nitrogen gas pressure of 4.15MPa.

  • Page 166: Caution Of The Pressure By Check Joint

    Installation 8.2.8.6.1 MINIMUM FLOOR AREA REQUIREMENTS ● The following chart and table shows the minimum floor ● Do not charge OXYGEN, ACETYLENE, or other flammable area (A min ) required for the installation of an indoor unit and poisonous gases into the refrigerant because an explosion from a refrigerant system containing a certain refrigerant can occur.

  • Page 167: Electrical Wiring

    Installation 8.3.9 ELECTRICAL WIRING ● Keep a distance between each wiring terminal and attach 8.3.9.1 GENERAL CHECK insulation tape or sleeve as shown in the figure. ● Make sure that the following conditions related to power supply installation are satisfied. Ensure that the power supply voltage is within ±10% of the rated voltage and the earth wire is connected.

  • Page 168: Electrical Wiring Connection For Outdoor Units

    Installation The electrical wiring connection between the outdoor unit and the indoor unit is shown in figure below: unit cable cable cable 8.3.9.3 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNITS The electrical wiring connection for the outdoor unit is shown ● Knock out the holes of the wiring cover before wiring in the figure below: connection.

  • Page 169: Wiring Size And Main Switch Protection

    Installation ● Inner view: PCB2 ● All wires shall be firmly fixed with fixing clamps, and ensure that each wire is reliably grounded. ● Do not connect the power source cable to the TB2. If connected, the printed circuit board will be damaged. 8.3.9.4 WIRING SIZE AND MAIN SWITCH PROTECTION Recommended minimum sizes for field-supplied wires and select the main switches according to the table below: Power source cable...
  • Page 170 Installation ● Where power supply cable is connected through junction box in series, be sure to determine the total current and choose wires based on the table below. Selection according to EN 60335-1. Current i (A) Wire size (mm i ≤ 6 6 <...

  • Page 171: Setting Of Dip Switches

    Installation 8.3.9.5 SETTING OF DIP SWITCHES 8.3.10 TEST RUN When installation is completed, perform test run according to the wired remote controller’s manual, and hand over the system to the customer. ● The mark “■” indicates the dip switches positions. ●...

  • Page 172: Main Safety Devices

    Installation 8.3.11 MAIN SAFETY DEVICES ◆ Compressor protection ◆ Fan motor protection High pressure switch: When the thermistor temperature is reached to the setting, motor output is decreased. This switch cuts out the operation of the compressor when the discharge pressure exceeds the setting. Otherwise, when the temperature becomes lower, limitation is cancelled.

  • Page 173: Technical Parameters

    Reference annual heating Sound power level , indoor/ 9119 42/61 dB(A) demand outdoor measured Annual energy consumption 1824 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 174 Reference annual heating Sound power level , indoor/ 7944 42/61 dB(A) demand outdoor measured Annual energy consumption 2457 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 175 Reference annual heating Sound power level , indoor/ 12507 42/62 dB(A) demand outdoor measured Annual energy consumption 2539 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 176 Reference annual heating Sound power level , indoor/ 11032 42/62 dB(A) demand outdoor measured Annual energy consumption 3312 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 177 Reference annual heating Sound power level , indoor/ 13441 42/64 dB(A) demand outdoor measured Annual energy consumption 2732 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 178 Reference annual heating Sound power level , indoor/ 12081 42/64 dB(A) demand outdoor measured Annual energy consumption 3536 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...

  • Page 179: Installation Of Hi-Therma Monobloc

    ● Within the policy of continuous improvement of its is minimized. - Work shall be undertaken under a products, Hisense reserves the right to make changes controlled procedure so as to minimized the risk at any time without prior notification and without being...
  • Page 180 Installation The ventilation machinery and outlets are operating Intrinsically safe components are the only types that adequately and are not obstructed. can be worked on while live in the presence of a If an indirect refrigerating circuit is being used, the flammable atmosphere.
  • Page 181 Installation ● Charging procedures Recovered refrigerant shall not be charged into another refrigeration system unless it has been Ensure that contamination of different refrigerants cleaned and checked. does not occur when using charging equipment. ● Labelling Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in Equipment shall be labelled stating that it has been them.

  • Page 182: Safety

    Installation 8.4.2 SAFETY 8.4.2.2 ADDITIONAL INFORMATION ABOUT SAFETY 8.4.2.1 APPLIED SYMBOLS ● During normal heat pump system design work or unit ● DO NOT CONNECT THE POWER SUPPLY TO THE UNIT installation, greater attention must be paid in certain PRIOR TO FILLING THE SPACE HEATING CIRCUIT (AND situations requiring particular care in order to avoid DHW CIRCUIT IF IT WERE THE CASE) WITH WATER damage to the unit, the installation or the building or...

  • Page 183: Important Notice

    Installation and service engineering must comply with local case, contact your distributor. standards, laws and regulations. The standards (British ● HISENSE cannot anticipate every possible circumstance Standard, BS4434) may be applicable if local regulations are that might involve a potential hazard.

  • Page 184: Minimum Floor Area Requirements

    Installation Start-up and Operation: Check to ensure that all the stop Minimum floor area for equipment installed inside valves are fully opened and no obstacle exists at the inlet/ (kg) outlet sides before start-up and during the operation. Floor mounted Wall mounted Ceiling mounted 1.84...

  • Page 185: Caution Of The Pressure By Check Joint

    Installation 8.4.4 TRANSPORTATION AND HANDLING 8.4.3.3 CAUTION OF THE PRESSURE BY CHECK JOINT 8.4.4.1 TRANSPORTATION When the pressure is measured, use the check joint inside the unit, as shown below. Transport the product as close to the installation location as possible before unpacking.

  • Page 186: Before Operation

    Installation 8.4.5 BEFORE OPERATION Accessory Image Qty. Remarks Basic instructions for Instruction the installation of the manual device. ● When the system is started after a shut-off longer that approximately 3 months, it is recommended to check the For electrical wiring system by your service contractor.

  • Page 187: Unit Installation

    Installation 8.4.7 UNIT INSTALLATION ● Transport the products as close to the installation location as ● Install the unit with sufficient clearance around it for operation possible before unpacking. and maintenance as shown in the next figures. Install the unit where good ventilation is available.
  • Page 188 Installation a) In case of front side and either of the sides are open (single unit) b) In case that surrounding wall exist (single unit) 1000 c) In case that upper side obstacles exist (single unit) 0 < L ≤ 1/2 H A ≥...

  • Page 189: Installation Place Provision

    Installation 8.4.7.2 INSTALLATION PLACE PROVISION ◆ Concrete foundation Pay attention to the following for installation: ● Foundation shall be on a level surface and it is ● Installation shall ensure that unit will not incline, vibrate, make recommended to be 100-300 mm higher than ground noise or fall down by a blast of wind or in an earthquake.

  • Page 190: Water Piping

    Installation 8.4.7.4 WATER PIPING 8.3.7.4.1 GENERAL NOTES BEFORE PERFORMING The shut-off valve with filter must be installed at water inlet of the PIPING WORK unit, and water flow direction and installation direction must be ● It is advisable to insulate the water pipes, joints and confirmed as follow.

  • Page 191: Refrigerant Circuit

    Installation 8.4.8 REFRIGERANT CIRCUIT 8.4.9 SPACE HEATING AND DHW 8.4.8.1 REFRIGERANT CHARGE 8.4.9.1 ADDITIONAL HYDRAULIC NECESSARY ELEMENTS This appliance is filled with R32, an odourless flammable refrigerant gas with low burning velocity (A2L class pursuant to ISO 817), and is factory charged in the unit. Do not connect the power supply to the unit prior to filling the space Refrigerant charge before shipment ( W0 (kg) ) heating circuit (and DHW circuit if it were the case) with water and...
  • Page 192 Installation ● A water check valve (15) with a shut-off valve (16) must be connected to the water filling point when filling the water circuit. The check valve acts as a safety device to The discharge pipe should always be open to the atmosphere, free protect the installation.

  • Page 193: Requirements And Recommendations For Hydraulic Circuit

    Installation 8.4.9.2 REQUIREMENTS AND RECOMMENDATIONS FOR HYDRAULIC CIRCUIT Glycol absorbs water from its environment. Therefore do NOT add 8.3.9.2.1 REQUIREMENTS FOR ANTI-FREEZING glycol that has been exposed to air. Leaving the cap off the glycol ● When the unit is stopped during shut-off periods container causes the concentration of water to increase.
  • Page 194 Installation 2 Freeze protection by freeze protection valves 8.3.9.2.4 REQUIREMENTS AND RECOMMENDATIONS About freeze protection by glycol FOR HYDRAULIC CIRCUIT When no glycol is added to the water, you can use freeze ● An additional special water filter is highly recommended protection valves to drain the water from the system before it to be installed on the space heating (field installation), can freeze.

  • Page 195: Water Filling

    Installation 8.4.9.3 WATER FILLING (8) If a little quantity of air is still remaining in the water circuit, it will be removed by the automatic air purge (1) Check that a water check valve (field supplied) with valve of the unit during the first hours of operation. Once a shutoff valve (field supplied) is connected to the the air in the installation has been removed, a reduction water filling point (water inlet connection) for filling...
  • Page 196 Installation (9) Check Water Volume: ● The process of calculating allowed maximum water volume in whole circulation is: ● The unit has a built-in 8L expansion vessel, and default initial pressure is 1 bar. To ensure the unit works Calculate maximum water volume corresponding to normally, the initial pressure of expansion vessel should initial pressure Pg by using maximum water volume be adjusted according to the circulated water volume.

  • Page 197: Dhw Tank Selection And Installation

    Installation 8.4.9.4 DHW TANK SELECTION AND INSTALLATION following example, the domestic hot water demand at 60°C has been considered as 30 litres per person, in a detached house with 4 residents. ● This DHW tank is designed for heat pump type heating system. - Calculation of T: DHW shall be selected according to the requirements in this The temperature of the DHW tank refers to the temperature...
  • Page 198 Installation 3 Structural Drawings The typical structure of the DHW tank is shown as below (only Thermistor for DHW for example): The DHW tank including the thermistor, the DHW electric ① heater and the DHW tank inner coil must be designed and installed in accord-ance with the local regulation.
  • Page 199 Installation (3) To ensure the measurement accuracy, the DHW tank thermistor should be coated with thermal grease. The ● If DHW tank is not used for more than 2 weeks, a water proof cable gland (field supplied) is recommended certain amount of hydrogen will gather in DHW tank. It is to secure the sensor firmly.

  • Page 200: Water Control

    Installation 8.4.9.5 WATER CONTROL It is necessary to analyse the quality of water by checking pH, electrical conductivity, ammonia ion content, sulphur content, and others. The following is the recommended standard water quality. Chilled water system Tendency (1) Circulating Item Supply Deposits water (20°C...

  • Page 201: Electrical And Control Settings

    Installation 8.4.10 ELECTRICAL AND CONTROL SETTINGS 8.4.10.1 GENERAL CHECK (1) Ensure all electrical apparatus used on site (power switch, circuit breaker, lead, conduit and terminal board) are selected according to technical manual and national electrician standard. Wiring must be made according to national specification. (2) Check voltage is within rated voltage ±...

  • Page 202: Electrical Wiring Connection For Outdoor Units

    Installation 8.4.10.2 ELECTRICAL WIRING CONNECTION FOR OUTDOOR UNITS The electrical wiring connection for the unit is shown as follow. Step1: Remove the screws (8pc) around the service cover. Step2: Remove the service cover.
  • Page 203 Installation Step3: Remove the screws (4pc) around the electrical box cover. Step4: Remove the electrical box cover.
  • Page 204 Installation Step5: Carry out wiring work as required. Knock out the holes on the sheet metal as required and put on the rubber rings provided by the factory before wiring connection. The more detailed wiring connection is shown in the figure below: All wires shall be firmly fixed with fixing clamps, and ensure that each wire is reliably grounded.

  • Page 205: Terminal Board Connections

    Installation 8.4.10.3 TERMINAL BOARD CONNECTIONS 8.3.10.3.3 WIRING OF DHW ELECTRIC HEATER 8.3.10.3.1 WIRING OF UNIT AND CONTROLLER ● The transmission is wired to terminals A-B. The electric heater of the DHW tank needs to meet the relevant ● The H-NET wiring system requires only two requirements of local laws and regulations.
  • Page 206 Installation 2 Electric heater power >3 kW. Electrical wiring must be performed by professional technician according to national regulations. ● Correctly mount cable water proof head and electrical box cover, preventing short circuit caused by water intruding into electrical box. ●...
  • Page 207 Installation 4. Insulate the sensor with the insulation sheet (field-supplied). Remove the factory-delivered sensor of Tow from original position and fix the sensor just after auxiliary electric heater if the heater is installed on site, as shown in the figure below. In case that the sensor supplied with unit is not long enough, please -supplied）...

  • Page 208: Optional Indoor Unit Wiring (Accessories)

    Installation 8.4.10.4 OPTIONAL INDOOR UNIT WIRING (ACCESSORIES) Inputs and outputs printed on the board are the setting before shipment options. By means of the master controller, some other inputs and output functions can be configured and used.
  • Page 209 Installation Input - Setting before shipment Mark Description Default settings Available input codes Terminals Specification i - 08 i - 00~17 I1, L1 Closed/Open Input 1 (Demand ON/OFF 1) (Except i - 07/12) on TB3 220-240V ~ 50/60Hz i - 13 i - 00~17 I2, +12V Input 2...
  • Page 210 Installation Input codes Mark Description Forced Heating mode by input of contact signal, Heating can also be changed over by master i - 10 Forced heating controller. Closed: Forced Heating mode Open: No action. Forced Cooling mode by input of contact signal, Cooling can also be changed over by master i - 11 Forced cooling controller.
  • Page 211 Installation Output - Setting before shipment Mark Description Default settings Available output codes Terminals Specification Power L2, N6 ON/OFF supply on TB3 o - 01 o - 00 ~ 29 Output 1 220-240V ~ 50/60Hz (3WV SWP) (Except o - 02/08/17/21) Signal Max.
  • Page 212 Installation Output - All output codes descriptions: Output codes Mark Description o - 00 No Function In case of combining Unit with swimming pool, this output is used to drive 3-way valve diverting o - 01 3WV SWP to the swimming pool heat exchanger. Output ON signal when swimming pool function is operating.
  • Page 213 Installation Auxiliary sensor - Setting before shipment Mark Description Default settings Available auxiliary sensor codes Auxsensor 1 a - 01 (Tow3) a - 00 ~ 13 Auxsensor 2 a - 03 (Tsolar) a - 00 ~ 13 Auxsensor 3 a - 02 (Tswp) a - 00 ~ 13 Auxsensor 4 a - 05 (Tow2)

  • Page 214: Wiring Size And Minimum Requirements Of The Protection Devices

    Installation 8.4.10.5 WIRING SIZE AND MINIMUM REQUIREMENTS OF THE PROTECTION DEVICES ● Do not connect the power supply to the unit prior to filling (1) Connect the power supply wires and the earth wire to the space heating circuit (and DHW circuit if it were the the terminal board in the electrical control box refer to case) with water and checking water pressure and the chapter 8.3.10.2.

  • Page 215: Setting Of Dip Switches

    Installation 8.4.10.6 SETTING OF DIP SWITCHES Water pump mode when Thermo OFF ON: Operate periodically OFF: Operate constantly ● The mark “■” indicates the dip switches positions. Manual emergency setting ● No mark “■” indicates pin position is not affected. ON: Manual emergency enabled ●...

  • Page 216: Test Run

    Installation 8.3.10.6.2 DIP Switch Setting of PCB7 8.4.11 TEST RUN (1) DSW1: Unit model setting No setting is required. NEVER operate the unit without careful inspection. Setting before shipment 8.4.11.1 CHECKLIST BEFORE TEST RUN Do NOT operate the system before the following checks are (2) DSW3: Unit capacity setting No setting is required.

  • Page 217: Checklist During Test Run

    Installation 8.4.11.2 CHECKLIST DURING TEST RUN The minimum flow rate during electric heater/defrost operation is guaranteed in all conditions. See section “8.3.9.2 Requirements and recommendations for hydraulic circuit”. To perform an air purge. To perform a test run. To perform an actuator test run. Underfloor screed drying function The underfloor screed drying function is started (if necessary).

  • Page 218: Main Safety Devices

    Installation 8.4.12 MAIN SAFETY DEVICES ◆ Compressor protection High pressure switch: This switch cuts out the operation of the compressor when the discharge pressure exceeds the setting. ◆ Fan motor protection When the thermistor temperature is reached to the setting, motor output is decreased. The other way, when the temperature becomes lower, limitation is cancelled.

  • Page 219: Technical Parameters

    Reference annual heating Sound power level , 9465 dB(A) demand outdoor measured Annual energy consumption 1830 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 220 Reference annual heating Sound power level , 8412 dB(A) demand outdoor measured Annual energy consumption 2425 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 221 Reference annual heating Sound power level , 13406 dB(A) demand outdoor measured Annual energy consumption 2680 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...
  • Page 222 Reference annual heating Sound power level , 12471 dB(A) demand outdoor measured Annual energy consumption 3574 Global warming potential kgCO Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd Contact details No. 218, Qianwangang Road, Economic and Technological Development Zone, Qingdao, China...

  • Page 223: Electrical Wiring Diagrams

    9. Electrical Wiring Diagrams Model: AHW-044/060/080HCDS1 PCB 2 (O.U. display PCB) PCB1 (O.U. Main PCB)
  • Page 224 AHM-044/060/080HCDSAA PCN7 ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ 0-10V ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ PCB1 52C1 52C1 1 2 3 52C2 52C2 1 WP2 3 3wv 5 wp1 7 8.8. 8.8. 8.8. ☆ ☆...
  • Page 225 Model: AHZ-044/080HCDS1 ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆...
  • Page 226 AHS-044/060/080HCDSAA-23 PCN7 ☆ 0-10V ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ ☆ PCB1 ☆ 1 2 3 52C1 52C1 1 2 3 52C2 52C2 1 WP2 3 3wv 5 wp1 7 8.8. 8.8. 8.8. ☆...

  • Page 227: Control Function

    Control function 10. Control function 10.1 Basic function introduction There are four main functions than can set on the master controller interface and incorporate into the heat pump and water circulation. The configuration of this option should be done through the master controller. Configuration →Complementary Heating →Boiler Mark Description...
  • Page 228 Control function (2) Point of 3-way valve for DHW and 3-way valve for swimming pool is after hydraulic separator. [Point of DHW & SWP] set as [Before Hydr S]. WPc1 and WP2 offer hydraulic head for Water Cycle 1 and Water Cycle 2 separately. It is possible to use storage heat capacity in hydraulic separator to heat up Water Cycle 1 and Water Cycle 2 during heat pump DHW operation referring to 10.8.
  • Page 229 Control function (3) For Integra Unit with DHW tank combination, [Point of DHW & SWP] is [Before Hydr S] as default setting. The extra WP1 must be installed at beginning of water circulation just after 3WV DHW to offer total hydraulic head for all water circulation of SWP/Space Heating/ Space Cooling.

  • Page 230: Main Function

    Control function 10.1.1 Main function (1) Space heating and Water Cycle ● Water Cycle 1 and Water Cycle 2 Space heating is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2.The unit is connectable to only one cycle demand (Water Cycle 1), either high temperature (i.e., radiator or fan coils) or low temperature (radiant floor).
  • Page 231 Control function ⑤ Water Cycle (Cycle 1 or Cycle 2) can also operate by combination of request of water outlet temperature and Room thermostats, that means the corresponding Water Cycle will be Switch ON and Thermo ON by request of water outlet temperature or Room thermostats on the corresponding Water Cycle.
  • Page 232 Control function ③ Room thermostats condition (setting temperature and Room temperature) on the specific WaterCycle (Cycle 1 or Cycle 2) can offset setting outlet water temperature of the corresponding Water Cycle. depending on setting. ④ Water Cycle (Cycle 1 or Cycle 2) can also operate independently without Room thermostats by request of water outlet temperature (the difference of setting outlet water temperature and current water outlet temperature on specific Water Cycle) .

  • Page 233: Alternate Function Operation With Priority

    Control function (4) Swimming pool (SWP) In addition, the unit can be combined with swimming pool. When the swimming pool operation is required, the 3-way valve for the swimming pool changes its normal position diverting to the swimming pool heat exchanger, allowing to heat the swimming pool water to a comfortable value.
  • Page 234 Control function Solar Panel Solar Pump sol ar D HW 3wv DHW D HW Tank D HW EH Indoor Unit W P3 W P1 T ow3 c y c le_1_room_1 H ydraulic Sep ara tor T iw T ow Boiler F an Coil s ignal W P1...

  • Page 235: Operation Priority

    Control function 10.1.2.2 Operation priority All the available function will operate alternately with different priority depending on setting. Usually heat pump can operate alternately between 2 functions. 10.1.2.2.1 Alternate operation between DHW and Space heating/cooling DHW priority can be set through different ways. (1) DHW schedule priority Heat pump will have priority to heat up DHW at [Starting Time 1/2/3/4] with [Setting temperature ON Starting Time 1/2/3/4] of DHW.
  • Page 236 Control function Note: 1. Min. space heating/cooling operation time of [Space_HP_tmin] will be limited to 20 minutes to accelerate shift of DHW operation When DHW schedule priority is activated at specific setting Starting Time, DHW boost is activated (referring to 10.3.6), or DHW Anti-legionella is activated (referring to 10.3.5).
  • Page 237 Control function Note: 1. [DHWEH] refers to 10.3.4 and DHW boost refers to 10.3.6. 2. Heat pump will keep cooling operation without shifting to DHW operation when Average outdoor ambient temperature is more than 38°C - 40°C, that is out of heat pump heating operation range. DHW is met by DHW Electrical Heater (referring to 10.3.4 (4)) or boiler (10.6.3 (7)), and keep complementary heat source is available at that time.

  • Page 238: Heat Source

    Control function 10.1.3 Heat source Basically, Heat pump produces capacity for space heating / space cooling / domestic hot water / swimming pool by transforming renewable energy from the outside air into heat. Air to water heat pumps extract the free energy present in the air, which is efficient to heat a home up to a comfortable temperature.

  • Page 239: Space Heating/Cooling

    Control function 10.2 Space heating/cooling Space heating is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2. Space heating is demanded by request of water outlet temperature and Room thermostats on Water Cycle 1 / Water Cycle 2. 10.2.1 Room thermostat There are max.

  • Page 240: Room Thermo On/Off

    Control function NOTE: *1. Rooms function on Master controller is selected as room thermostat. And in this scenario auxiliary sensor on PCB1 of indoor unit can be configured as function of [Room_amb1...7] and be selected as Room temperature detection. Refer to 10.10.3.

  • Page 241: Water Cycle For Space Heating

    Control function 10.2.2 Water Cycle for space heating Space heating is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2. Cycle 1 will be direct (high temperature for radiator or fan coils operation) and Cycle 2 will be a mixing cycle in order to have a second temperature control using mixing valve (low temperature for floor heating operation).

  • Page 242: Set Target Outlet Water Temperature

    Control function NOTE: ① When Cycle 2 is available Auxiliary sensor on PCB1 of indoor unit need be configured as function of [Tow2] . Refer to 10.10.3. ② When Cycle 2 is available Optional Output signal need be configured as function of [WP2]. This Output signal can be used as relay signal to wp2.
  • Page 243 Control function The configuration of this option should be done through the master controller Configuration → Space heating →Cycle 1→ Working range Mark Description Default Value Range Steps Units c1_wate_h_max Max. Water Supply Temp 35~65 °C c1_wate_h_min Min. water Supply Temp 20~34 °C Configuration →...
  • Page 244 Control function (2) OTC point Water target is selected by an Outside Temperature Compensated (OTC) control that is defined by 4 different points to create a line representing the function that the air to water heat pump will use to give the temperature setting according to the current ambient temperature.
  • Page 245 Control function (3) OTC Gradient Water target is selected by an Outside Temperature compensated (OTC) control that is defined by a different gradient of the curve. The initial point of the curve is always 20ºC-20ºC (water outlet target 20ºC at outdoor ambient temperature of 20ºC). User can edit the gradient variable.
  • Page 246 Control function 10.2.2.1.2 Water ECO offset ● Function Use a reduced offset for water temperature setting. By using this function, current water temperature setting is reduced by the indicated parameter. The configuration of this option should be done through the master controller Configuration →...

  • Page 247: Second Water Temperature Control

    Control function (2) Cycle 2 The configuration of this option should be done through the master controller. Configuration → Space heating → Cycle 1→Room temperature Compensation Mark Description Default Value Range Steps Units Rfacth_c2 Compensation factor OFF-1-5 °C Maxfacth _c2 Max Compensation value 0~10 °C...
  • Page 248 Control function The configuration of this option should be done through the master controller. Configuration → Space heating → Cycle 2→Mixing valve Mark Description Default Value Range Steps Units Rotation time 10-500s Proportion Factor 0-20 %/°C Integral Factor 0-20 %/°C.min Overheat protection offset OFF, 3-10 °C...

  • Page 249: Thermo On/Off And Capacity Control

    Control function 10.2.2.3 Thermo ON/OFF and capacity control Space heating is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2. Space heating is demanded by request of water outlet temperature on Water Cycle 1 / Water Cycle 2 and Room thermostats. There are 3 different ways to Thermo ON/OFF Space heating operation (heat pump and other heat resources running and stopping).

  • Page 250: Heating Auto On/Off

    Control function (1) Thermo ON/OFF by combination of room thermostats and request of water outlet temperature on Water Cycle 1 and Water Cycle 2 when [ Off_mode(heating) ] is set as [ON] and room thermostats is available. In this situation, Water Cycle (Cycle 1 or Cycle 2) can also operate by combination of request of water outlet temperature and Room thermostats, that means Space heating will be Thermo ON by request of water outlet temperature or Room thermostats.

  • Page 251: Water Cycle For Space Cooling

    Control function 10.2.3 Water Cycle for space cooling In addition, the unit can be combined with fan coils to delivery space cooling. When space cooling operation is required, the 3-way valve for cooling changes its normal position diverting to the fan coils, allowing to delivery cooling capacity. Space cooling is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2.

  • Page 252: Set Target Outlet Water Temperature

    Control function The configuration of this option should be done through the master controller Configuration → Space cooling →Cycle 1 Mark Description Default Value Range Steps Units Cycle 1_ Status Status Enabled Disabled /Enabled Configuration → Space cooling → Cycle 2 Mark Description Default Value...
  • Page 253 Control function 10.2.3.1.1 Water temperature set-point Water Cycle set-point can be set as follows: The configuration of this option should be done through the master controller Configuration → Space cooling→Cycle 1 Mark Description Default Value Range Steps Units Fixed Cycle 1 Water Regulation Mode Fixed OTC point...
  • Page 254 Control function Configuration → Space cooling→ Cycle 1→ Water Regulation Mode→OTC point Mark Description Default Value Range Steps Units Tac1l low ambient temperature 17~30 °C Tac1h High ambient temperature 31~43 °C Water temperature at low Tsc1l 17~c1_wate_c_max °C ambient temperature Water temperature at high Tsc1h c1_wate_c_min~16...

  • Page 255: Second Water Temperature Control

    Control function 10.2.3.1.3 Compensation from Room thermostat There are max. 4 room thermostats that can be incorporated to each Water Cycle (Cycle 1 and Cycle 2). Compensate water temperature setting by room temperatures and room setting temperature on the specific cycles (Cycle 1 & 2) to operate space cooling/cooling efficiently.
  • Page 256 Control function The configuration of this option should be done through the master controller. Configuration → Space cooling→ Cycle 2→Mixing valve Mark Description Default Value Range Steps Units Rotation time 10-500s Proportion Factor 0-20 %/°C Integral Factor 0-20 %/°C.min Overheat protection offset OFF, 3-10 °C NOTE：...

  • Page 257: Thermo On/Off And Capacity Control

    Control function 10.2.3.3 Thermo ON/OFF and capacity control Space cooling is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2. Space cooling is demanded by request of water outlet temperature on Water Cycle 1 / Water Cycle 2 and Room thermostats. There are 3 different ways to Thermo ON/OFF Space cooling operation (heat pump running and stopping).

  • Page 258: Auto Heat/Cool

    Control function 2. Water Cycle and room thermostats have following operation interaction. ① If any one of room thermostats on the specific Water Cycle (Cycle 1 or Cycle 2) is Switch ON, then the corresponding Water Cycle will be Switch ON. ②...
  • Page 259 Control function c y c le_2_room_1 c y c le_2_room_2 Wired1 Wired2 T ow2 Vmix 3wv DHW T ow3 H ydraulic Separator Boiler s ignal The configuration of this option should be done through the master controller. Configuration →Complementary Heating →Boiler Mark Description Default Value...

  • Page 260: Dhw

    Control function 10.3 In addition, the unit can be combined with sanitary tank to delivery DHW. When DHW operation with heat pump is required, the 3-way valve for DHW changes its normal position diverting to the sanitary tank inner coil, allowing to heat the tank water temperature.

  • Page 261: Dhw Setting Temperature

    Control function 10.3.1 DHW setting temperature DHW setting temperature should be done through the master controller interface. Main Interface → DHW Mark Description Default Value Range Steps Units TDHWS DHW Setting temperature 40- TDHWS_max °C In order to prevent high hot water in the tank an additional function of [Max. Setting Temp] is added: The configuration of this option should be done through the master controller.

  • Page 262: Dhw Operation With Dhw Electric Heate

    Control function 10.3.3 DHW operation with DHW Electric Heate DHW Electric Heater (DHW EH) is on-site accessory to deliver additional heating capacity during cold outdoor temperatures. The electrical heater can also be used for emergency operation in case of outdoor unit malfunction. NOTE: 1.
  • Page 263 Control function NOTE: 1. Max. DHW operation time of [HP ON Max. Time] will be add extra 70 minutes to heat up DHW in one period time of DHW operation shift When DHW schedule priority is activated at specific setting Starting Time. Take the extra time into consideration when setting DHW Electric heater waiting time of [DHWEH].

  • Page 264: Dhw Anti-Legionella Protection

    Control function NOTE： 1. Tow/Tow3 should be lower than 55°C to start heat pump. (4) DHW Electric Heater operates during Space heating/cooling. When heat pump shift to Space heating/cooling operation at the time that DHW schedule priority is activated (referring to 10.1.2.1.1) and DHW setting temperature (TDHWS) is not met, it is possible that heat pump does not have enough capacity to heat up DHW in this DHW operation shift.

  • Page 265: Dhw Boost

    Control function ● DHW Anti-legionella can also be activated by weekly timer. The configuration of this option should be done through the master controller. Configuration →Auxiliary Function → DHW-Anti Legionella Mark Description Default Value Range Steps Units Anti_Legionella Status Status Disabled Disabled/Enabled Anti_Legionella_Oplnt...

  • Page 266: Dhw Recirculation Pump

    Control function NOTE: 1. If DHW electric heater is unavailable and DHW Boost Setting temperature is too high, DHW will be heated up to the max temperature by heat pump. 2. DHW electric heater will work as mode of [H.Demand] and confine of [DHW_ht_diff] ≤ 3°C to achieve setting temperature quickly(referring to 10.3.3).

  • Page 267: Dhw Electric Heater During Emergency Operation

    Control function Space heating/cooling operation（Switch ON） DHW operation（Switch ON） DHW Electric Heater operation TDHWS1_time1 TDHWS2_time2 THPSTOP TDHW 1 hour 2 hour 2 hour 1 hour DHW schedule priority DHW schedule priority Starting Time1 Starting Time2 time2 time1 (5) [DHW_recirp] set as [Timer+ Demand] Output ON signal in case that conditions of (2) or (4) are met.

  • Page 268: Swimming Pool

    Control function 10.4 Swimming pool In addition, the unit can be combined with swimming pool. When the swimming pool operation is required, the 3-way valve for the swimming pool changes its normal position diverting to the swimming pool heat exchanger, allowing to heat the swimming pool water temperature to a comfortable value.

  • Page 269: Auxiliary Electric Heater

    Control function The configuration of this option should be done through the master controller. Configuration →Swimming Pool Mark Description Default Value Range Steps Units Tswpos Offset Temperature 15-40 °C 10.5 Auxiliary electric heater Auxiliary electric heater (AEH) is used as additional heating capacity during cold outdoor temperature. The electrical heater can also be used for emergency operation in case of outdoor unit malfunction.

  • Page 270: Heater Operation During Space Heating

    Control function The configuration of this option should be done through the master controller. Configuration →Complementary Heating →Electrical Heater. Mark Description Default Value Range Steps Units HEPB Proportion Factor 0-20 %/°C HEIRF Integral Factor 0-20 %/°C.min ISWT Minimum time of steps 0-10 TDHWS_Anti_Legionella Setting temperature...
  • Page 271 Control function (1) Heater will only be enabled when Average Outdoor Ambient Temperature < [Bivalent Point ]. The decision as to how to operate will be made considering ambient temperature. Capacity boiler heater Heat pump Average Outdoor ambient temperature (2) Electric Heater is only allowed to operate when more than [Waiting Time] has passed since Heat Pump started. Space hea�ng demand Heat pump start Heater load factor...

  • Page 272: Initial Start-Up At Low Outdoor Ambient Temperatures

    Control function 10.5.3 Initial Start-up at Low outdoor ambient temperatures. During commissioning and when water temperature is very low, it is important for water to be heated gradually. In those conditions, additional function should be used for starting at low water temperature conditions: Space Heating at lower water temperatures (lower than 15°C) and lower outdoor ambient temperatures (lower than 7ºC) can damage the heat pump when defrosting.

  • Page 273: Boiler Combination

    Control function 10.6 Boiler combination Boiler can be used as additional heating capacity or replacement heating capacity during cold outdoor temperatures. Boiler can also be used for emergency operation in case of outdoor unit malfunction. Boiler can offer additional heating capacity during space heating / DHW / swimming pool depending on setting.

  • Page 274: Boiler Operation During Space Heating

    Control function (3) Actual Boiler output will be translated from percentage to a ON/OFF output using hysteresis system. 100% Boiler Load Factor ● Boiler ON conditions Load factor is higher than 50% and Hot water temperature [Tow3] of the hydraulic separator less than Boiler Target temperature -1°C.
  • Page 275 Control function ● [Alternative] Boiler works as replacement source and heat pump stop working due to low efficiency during cold outdoor temperatures. Boiler supplies all heat capacity. Capacity boiler heater Heat pump Average Outdoor ambient temperature (3) Boiler is only allowed to operate when more than [Waiting Time] has passed since Heat Pump starts. Space hea�ng demand Heat pump start Boiler load factor...

  • Page 276: Boiler Operation During Dhw

    Control function 10.6.3 Boiler Operation during DHW The configuration of this option should be done through the master controller. Configuration →Complementary Heating →Boiler Mark Description Default Value Range Steps Units DHW_B DHW by Boiler Disabled Disabled / Enabled It is possible to use boiler to heat up DHW when [DHW_B] set as [Enabled]. And [Point of DHW & SWP] should set as [After Hydr S] to use boiler to heat up DHW.

  • Page 277: Boiler Operation During Swp

    Control function (7) Boiler Operation during Space cooling. It is possible to operate Space cooling (heat pump and WP1) and DHW (WP3 or boiler) simultaneously when hydraulic separator is available (refer to 10.2.5), [DSW5-2] set as [OFF ] and [Point of DHW & SWP] set as [After Hydr S] (refer to 10.1), in this situation cooling water circulation will not pass through hydraulic separator.

  • Page 278: Solar Combination

    Control function 10.7 Solar combination The solar combination will enable to heat up domestic water by means of the sun whenever the sun is available. The solar panels gather heat from the sun. when it is ready, the solar pump begins operating in order to transfer the heat to the domestic hot water tank’s heat exchanger.

  • Page 279: Control Function

    Control function 10.7.1 Control function There are 2 ways to trigger solar pump operation to transfer the heat to the domestic hot water tank’s heat exchanger. (1) [Solar_s] set as [Input] Trigger solar pump operation to transfer the heat to the domestic hot water tank’s heat exchanger by input signal of [Solar in].

  • Page 280: Solar Panels Antifreezing Protection

    Control function 10.7.3 Solar panels antiFreezing protection The solar panels may be frozen in the winter. It is necessary to circulate hot water to the solar panels to prevent them from being frozen . when hot water temperature of solar panels [Tsolar] is too low , the solar pump begins operating in order to transfer the heat to the solar panels through heat exchanger.

  • Page 281: Water Pump Control

    Control function 10.8 Water pump control Depending on system configuration WP1/WP2/WP3 work in the water circulation as following. Water Description pump This Water pump is present inside the unit. It is responsible of water recirculation between plate exchanger and hydraulic separator /installation.
  • Page 282 Control function Space cooling Switch ON/OFF Thermo ON/OFF 2min NOTE: 1. WP3 is always OFF during space cooling when DSW5-2 is OFF, in this situation cooling water circulation will not pass through hydraulic separator. Solar Panel Solar Pump sol ar D HW 3wv DHW D HW Tank...
  • Page 283 Control function ● When DSW4-5 is ON, pump of WP1/WP3 is in Economic mode, water pump works as shown in the graphic below: Space heating Switch ON/OFF Thermo ON/OFF 2min/ t1 2min Space cooling Switch ON/OFF Thermo ON/OFF t2 t1 2min/t1 2min The configuration of this option should be done through the master controller.
  • Page 284 Control function NOTE: 1. WP3 is always OFF during space cooling when DSW5-2 is OFF, in this situation cooling water circulation will not pass through hydraulic separator. 2. WP1 and WP3 has 2 minutes or more of overrun after requiring OFF depending on outlet water temperature. 3.
  • Page 285 Control function ● When DSW4-5 is OFF, WP1 is in Standard operation, water pump works as shown in the graphic below: Switch ON/OFF Thermo ON/OFF 2min NOTE: 1. WP1 has 2 minutes or more of overrun after requiring OFF depending on outlet water temperature. ●...

  • Page 286: Wp2 Control

    Control function 10.8.1.2 WP2 control WP2 is used only in case a secondary Water Cycle for space heating or space cooling is used. It ensures water circulation at Water Cycle 2. The mixing station is controlled using the indoor unit by means of a mixing valve / additional pump (WP2)/ additional water sensor (Tow2).

  • Page 287: Wpc1 Control

    Control function 10.8.1.3 WPc1 control WPc1 is used only in case Water Cycle 1 is available. It ensures water circulation at Water Cycle 1. Refer to 10.1. The configuration of this option should be done through the master controller. Configuration →Heat pump→Water pump configuration Mark Description Default Value...

  • Page 288: Water Pump Control During Dhw And Swp

    Control function 10.8.2 Water pump control during DHW and SWP 10.8.2.1 Hydraulic separator is Enabled WP1 and WP3 need to work together to deliver water circulation When hydraulic separator is Enabled ([hsb] set as [Enabled]). Water pump of WP1/WP3 works as shown in the graphic below: [Point of DHW &...

  • Page 289: Hydraulic Separator Is Disabled

    Control function SWP operation Switch ON/OFF Demand ON/OFF 2min 2min ON： ①Tswp<Tswps And Tow3≧Tswp +2 ②Optional input terminal of [Swimming pool Demand ON/OFF] is closed. OFF： ①Tswp > Tswps or Tow3≦Tswp +1 ②Optional input terminal of [Swimming pool Demand ON/OFF] is open. NOTE: 1.

  • Page 290: Ec Wp1 Speed Control

    Control function 10.8.3 EC WP1 speed control Inside EC WP1 can be controlled by PWM input signal (EC Water Pump). The configuration of this option should be done through the master controller. Configuration →Heat pump→Water pump configuration Mark Description Default Value Range Steps Units...
  • Page 291 Control function (4) EC WP1 PWM input signal ( ● PWM input signal PWM input signal (%) Pump Action [n-P] in 7-segments <5 The pump runs at maximum speed. 5 - 60 The pump speed decreases linearly from maximum to minimum. Standby.
  • Page 292 Control function Monobloc Unit with Wilo pump: Monobloc Unit and Integra Unit with SHIMGE pump:...

  • Page 293: Ec Wp1 Water Flow Feedback

    Control function 10.8.4 EC WP1 Water flow feedback Water flow can be feedbacked by PWM output signal of Inside EC WP1 to monitor and estimate capacity. PWM output signal for Wilo and SHIMGE: PWM output signal (%) Pump Status Potential causes [o-P] in 7-segments Pump PWM interface damaged iPWM interface in short circuit...
  • Page 294 Control function cycle_2_room_1 cycle_2_room_2 cycle_1_room_1 Wired1 Wired2 Room_amb1 ACT3 cycle_1_room_2 ACT4 Room_amb2 Tow2 ACT1 ACT2 Vmix Indoor Unit Tow3 Hydraulic Separator Tiw Tow Outdoor Unit ● Circulate only primary Water Cycle to save power consumption when DSW3-4 is OFF. Run only WP1 to circulate only primary Water Cycle. When Hydraulic separator is available Indoor Unit Tow3...
  • Page 295 Control function When 3WV DHW is available 3wv DHW DHW Tank DHW EH Indoor Unit Tiw Tow O utdoor Unit When Bypass is available cycle_2_room_1 cycle_2_room_2 Wired1 Wired2 ACT3 ACT4 Tow2 Vmix Indoor Unit Tiw Tow O utdoor Unit...

  • Page 296: Air Purge

    Control function NOTE: 1. DSW3-4 ON is factory setting. Recommend DSW3-4 ON to circulate whole Water Cycle, for example no 3WV DHW or hydraulic separator is available. Make sure water circulation and Anti Freezing is fine if DSW3-4 set OFF. 2.

  • Page 297: Seizure Protection

    Control function 10.8.7 Seizure protection The pump seizure protection function prevents sticking of components due to long periods of inactivity, by running the components during a short period every week. Mixing valves will also have action. The configuration of this option should be done through the master controller. Configuration →Auxiliary Function →Seizure Protection Mark Description...

  • Page 298: Optional Functions

    Control function 10.9 Optional functions 10.9.1 Screed Drying Unit has a special optional function exclusively used for the process of drying screed that has been newly applied to floor heating systems. This process is based on EN1264 part 4. The water temperature set-point follows a predetermined schedule upon activation of the floor screed drying function.

  • Page 299: Defrost By Dhw And Electric Heater

    Control function 10.9.2 Defrost by DHW and electric heater This function allows to perform defrost operation by DHW tank instead of by space heating water circuit. The configuration of this option should be done through the master controller. Configuration →Auxiliary Function →Defrost Mark Description Default Value...

  • Page 300: Smart Function

    Control function The configuration of this option should be done through the master controller. Configuration →Auxiliary Function →Energy Configuration Mark Description Default Value Range Steps Units Capcon Capacity configuration Disabled Disabled / Enabled Power_meter_s Power Meter status Disabled Disabled/Enabled Capacity of DHW ELE. DHW_ht2_cap Disabled~1~6 heater...
  • Page 301 Control function ● [HP Limited (A)]: Current consumption is limited to percentage value of [Esmart_A] of full range when signal is active. Current data is based on Outdoor unit real current (A) given by compressor. ● [DHW Block]: DHW Operation is forbidden when signal is active. Space Heating/Cooling, Swimming pool is allowed normally.

  • Page 302: Duty Control

    Control function 10.9.6 Duty Control Duty signal (0-10V, 0-5V or 4-20mA)can used to adjust setting temperature of Water Cycle 1 , Water Cycle 2, DHW or SWP. The configuration of this option should be done through the master controller. Configuration →Auxiliary Function →Demand Control(duty) Mark Description Default Value...

  • Page 303: Night Shift

    Control function 10.9.7 Night Shift Night shift function reduces compressor load and fan speed in order to reduce environmental noise, preferably at night. When Night shift function is active, the capacity of the unit is reduced to the percentage defined as [night_shift_demand]. NOTE: 1.

  • Page 304: Input /Output /Auxiliary Sensors

    Control function 10.10 Input /Output /Auxiliary sensors NOTE: 1. After changing the input settings, output settings and auxiliary sensor settings on the master controller, it needs to be powered off and on again to take effect. 10.10.1 Input The unit offers 11 optional input ports that can be configured as different function. The configuration of this option should be done through the master controller.
  • Page 305 Control function Closed: Corresponding room thermostat Switch ON and Thermo ON. Open: Corresponding room thermostat Switch OFF and Thermo OFF. Demand ON/OFF 2 Corresponding room thermostat can also be Switch ON/OFF by Rooms function on Master controller. Forced Heating mode by input of contact signal, Heating can also be changed over by master controller.
  • Page 306 Control function (2) Forced heating Forced Heating mode can be changed by an input of an external contact signal. Heating/cooling can also be changed over by controller. close Forced heating signal open heating cooling controller cooling operation heating operation (3) Forced cooling Forced Cooling mode can be changed by an input of an external contact signal.
  • Page 307 Control function (5) Demand ON/OFF1 and Demand ON/OFF2 Switch ON/OFF and Thermo ON/OFF of Corresponding room is controlled by an input of an external contact signal. Corresponding room thermostat can also be Switch ON/OFF by Rooms function on Master controller. Demand close ON/OFF1...
  • Page 308 Control function (7) DHW Boost An input of an external contact signal of DHW Boost can be used to Switch ON of DHW. DHW can also be Switch ON/OFF by Master controller. Valid signal is depending on setting [Trigger type] of DHW Boost referring to 10.3.6. ●...

  • Page 309: Output

    Control function 10.10.2 Output The unit offers 15 optional output ports that can be configured as different function. The configuration of this option should be done through the master controller. Configuration →I/O →Outputs Terminal Mark Descripti on Default Value Range Terminals ON board Specification ON board s ON PCB1...
  • Page 310 Control function Optional function can be configured. Output Mark Description code No Function In case of combining Unit with swimming pool, this output is used to drive 3-way valve diverting to the 3WV SWP swimming pool heat exchanger. Output ON signal when swimming pool function is operating. In case of combining Unit with hydraulic separator, this output is used to drive relay of water pump 3.

  • Page 311: Auxiliary Sensors

    Control function 10.10.3 Auxiliary sensors The unit offers 7 Auxiliary sensors that can be configured as different function. The configuration of this option should be done through the master controller. Configuration →I/O →Auxiliary sensors. Specification ON Mark Description Default Value Terminals ON board Terminals ON board Terminal s ON PCB1 board...

  • Page 312: Test Run

    Control function 10.11 Test Run 10.11.1 Actuator test run Purpose of the actuator test run is to confirm the operation of the different output signals (e.g., when you select Pump, a test run of the pump will start). Select [Actuator_test_Output] of output ports and [Actuator_test_T] of run time to start output ON signal. The configuration of this option should be done through the master controller.

  • Page 313: Control Configuration For Ou

    Control configuration for OU 11. Control configuration for OU 11.1 Control Logic Item Details Quasi PI Control： (1) Difference between indoor outlet water temperature and Comp.Frequency Control target outlet water temperature (2) Amount of temperature difference change. Quasi PI Control: Cooling Operation To determine the O.U.

  • Page 314: Defrost Operation

    Control configuration for OU 11.2 Defrost Operation < Defrost Operation > The following defrost operations, “Standard Defrost”, “Forced Defrost” and “Manual Defrost” are available. (1) Standard Defrost This operation starts according to the outdoor temperature, the outdoor evaporating temperature and the operating time. (2) Forced Defrost This operation starts when the indoor unit repeats Thermo-ON/OFF* operation and therefore cannot start the “Standard Defrost.”...
  • Page 315 Control configuration for OU < Condition for Starting Defrost Operation > (1) Standard Defrost (a) Temperature Condition Defrost Operation Stop Area Temperature Conditions under Defrost Operation Defrost Operation Start Area Outdoor Temperature [ (b) Condition of Operating Time for Defrost Operation Start The defrost operation starts when the temperature condition shown in “(a) Temperature Condition”...

  • Page 316: Function Setting

    Control configuration for OU 11.3 Function Setting The function setting should be performed during the outdoor unit stoppage. This setting is not available during other Setting. The setting before shipment is “0” Start (Not Available). Circular at Not Available Heating Press PSW3 Press PSW1 Thermo-OFF...

  • Page 317: Function Setting Item

    Control configuration for OU 11.3.1 Function Setting Item 7-Segment Display Setting Item Contents Item No setting Circulator Function at Heating Thermo-OFF No function No setting Night Shift (Low Noise) No function No setting Cancellation of Outdoor Ambient Temperature Limit for Heating No function No setting Cancellation of Outdoor Ambient...

  • Page 318: Change Of Defrost Condition (Function Setting "Jo")

    Control configuration for OU 11.3.2 Change of Defrost Condition (Function Setting “Jo”) Press “PSW1” and select the setting condition “0” or “1” for Change of Defrost Condition “ Jo ”. This function changes the defrost condition as shown below. Control for Standard Control for Cold Area “Jo”...

  • Page 319: Quiet Mode

    Control configuration for OU 11.3.5 Quiet Mode Outdoor unit receives Quiet Mode enabled signal from Master Controller to reduce the unit sound noise(Refer to the Section 10.9.8 “Quiet Mode”). NOTES: 1. By setting this function, the compressor frequency and the outdoor fan motor rotation frequency are forcibly reduced and so the outdoor unit capacity decreases and the unit operation range is limited.

  • Page 320: Night Shift Mode

    Control configuration for OU (2) Frequency Range When Quiet Mode is enabled, the maximum Frequency of outdoor unit as follows. Maximum Frequency(Hz) Outdoor Temperature Ta< -15°C -15°C≤Ta<12°C 12°C≤Ta<24°C 24°C≤Ta Outdoor Unit Capacity 044(2.0HP) 060(2.5HP) 080(3.0HP) (3) Sound pressure noise and Capacity ratio When Quiet Mode is enabled, the sound pressure noise and capacity ratio as follows.

  • Page 321: Night Shift Mode Is Enabled (Heating Operation)

    Control configuration for OU (3) Sound pressure noise and Capacity ratio When Night Shift Mode is enabled, the sound pressure noise and capacity ratio as follows. Sound Pressure Noise(dB) Night_shift_demand(%) 044(2.0HP) 060(2.5HP) 080(3.0HP) 11.3.6.2 Night Shift Mode is enabled (Heating operation) (1) Outdoor Fan The max step of outdoor fan Fomax: Fomax = night_shift_demand/100*FoH (Fomax ≥...

  • Page 322: Test Run

    Control configuration for OU 11.3.7 Test run Test run setting should be performed during the outdoor unit stoppage and normal mode. This setting is not available during other Setting. To start the Test Run: Press PSW1 and PSW3 for 3 seconds . To cancel the Test Run: Press PSW1 and PSW3 for 3 seconds.
  • Page 323 SERVICE...

  • Page 324: Troubleshooting

    Troubleshooting 1. Troubleshooting 1.1 Initial Troubleshooting 1.1.1 Checking of Electrical Wiring and Power Supply Check the following items for any abnormality in the activation of the system. Check Situation Check Method Check the voltage (secondary side) of the breaker and also check the continuity of Is any power supply breaker or fuse blown? the fuse by a tester.

  • Page 325: Power Supply Failure To The Indoor Unit And The Master Controller

    Troubleshooting 1.1.3 Power supply failure to the indoor unit and the master controller ● The light band of the master controller is not displayed. ● Not operated If the fuses are blown out or a breaker is activated, investigate the cause of the overcurrent and take the necessary action. Action Phenomenon Cause...

  • Page 326: Checking By Means Of The 7-Segment Display

    Troubleshooting 1.1.4 Checking by means of the 7-segment display Simple checking procedure by means of the 7-segment display 1. Turn on the indoor unit connected to the outdoor unit. 2. Turn on the outdoor unit. 3. Auto-addressing starts. During the auto-addressing, the following items can be checked by means of the 7-segment display of the outdoor unit. ●...

  • Page 327: Abnormal Operation Of The Devices

    Troubleshooting 1.1.5 Abnormal operation of the devices Action Phenomenon Cause Check item (Turn OFF the main switch) Failure of thermistor Failure of thermistor for outdoor Disconnected wire of evaporating Replace or correctly connect when it is abnormal thermistor or wrong temperature (Te) installation position for Te and Te2 during...
  • Page 328 Troubleshooting Action Phenomenon Cause Check item (Turn OFF the main switch) Clogging of the outdoor unit heat Remove the clogging exchanger? Obstacles at the inlet or the outlet Insufficient air flow at Remove the obstacles of the outdoor unit heat exchanger the outdoor unit heat exchanger Is the service area for the outdoor...
  • Page 329 Troubleshooting Action Phenomenon Cause Check item (Turn OFF the main switch) Indoor heat load is greater than the heating Replace the unit with a bigger Calculate the heat load capacity unit Correctly charge the refrigerant Gas leakage or insufficient Measure superheat after the gas leakage check and refrigerant charge repairing...
  • Page 330 Troubleshooting Action Phenomenon Cause Check item (Turn OFF the main switch) Foreign particles inside of the fan casing Visually inspect it Remove the foreign particles Adjust the position of the Outdoor unit propeller fan is hitting the shroud Visually inspect it propeller fan Check that each part is tightly Cooling or heating...

  • Page 331: Troubleshooting Procedure

    Troubleshooting 1.2 Troubleshooting Procedure 1.2.1 Checking of Using 7-Segment Display The 7 segment at the indoor unit PCB1 will show the alarms from the indoor unit. The 7 segment at the outdoor unit display PCB shows the alarms from the outdoor unit. 1.2.1.1 Checking of Using 7-Segment Display(O.U.) Turn on Indoor Unit Turn on the Outdoor Unit...
  • Page 332 Troubleshooting Only an authorized person can check using this method. ● Before Checking (1) Turn ON the main power supply. Wait for more than 20 seconds to start checking. (2) Checking Items * Expansion Valve Opening * Temperature Readings from Thermistors (3) Check the locations of 7-segment and push switches.
  • Page 333 Troubleshooting Details of 7-Segment Display Indication Data Check Item Index Contents Input/Output State of Outdoor chip output state, this show the status of relays Outdoor Micro-Computer on display PCB. 0～999 Total Capacity of Operating Indoor Unit Refer to "(1) Indoor Unit Capacity Table" Inverter Order Frequency to Compressor 0～115 [Hz] Number to Running Compressor...
  • Page 334 Troubleshooting Indication Data Check Item Contents ～ ～ ～ ～ Code of Inverter Stoppage ～ ～ 5) Abnormal Refrigerant System Address...
  • Page 335 Troubleshooting (1) Indoor Unit Capacity Table Capacity Horsepower Indication (kW) (HP) (2) Cause Code of I.U. or O.U. Stoppage Refer to 1.2.3. cause Code of I.U. or O.U. Stoppage 1. The cause code of indoor unit stoppage is not always “02” (Alarm) during stoppage by the abnormality. If the unit is under Thermo-OFF by other cause of stoppage before “02”...
  • Page 336 Troubleshooting (3) Alarm Code Code Category Content of Abnormality Leading Cause Activation of PSH (Pipe Clogging, Excessive Refrigerant, Outdoor Unit Activation of Protection Device (High Pressure Switch) Inert Gas Mixing) Incorrect Wiring, Loose Terminals, Disconnect Wire, Abnormality between Indoor and Outdoor Blowout of Fuse, Outdoor Unit Power OFF Transmission O.U.
  • Page 337 Troubleshooting (4) Cause Code of Inverter Stoppage （iTC） Remark Corresponding cause Code Stoppage Cause of I.U. or O.U. Stoppage Indication during Retry Alarm Code IPM Error Instantaneous Overcurrent Inverter Fin Thermistor Protection Activation Inverter Voltage Decrease Overvoltage abnormal fault of sampling circuit Open Phase Detection Protection Device...
  • Page 338 Troubleshooting Cause Code of Inverter Stoppage (iTC) Cause Code of Inverter Stoppage Cause Cause of failure Stoppage (iTC) The instantaneous current of the compressor output is too large, IPM Error triggering the hardware protection. The compressor outputs overcurrent, and software protection is triggered when the effective value is greater than 13A.
  • Page 339 Troubleshooting Cause Code of Inverter Stoppage (iTC) Cause Code of Inverter Stoppage Cause Cause of failure Stoppage (iTC) The inverter EEPROM software parameters are faulty, please EERPOM Error or re-write the software or replace the PCB. Abnormal of Key Parameters of Compressor and PFC The inverter software parameters are faulty, please re- write the software or replace the PCB.
  • Page 340 Troubleshooting (5) Abnormal Data Record “Abnormal Data Record”(No.01 ~ No.15) in checking item can record recent abnormal stoppages. (The maximum number of recordable is 15. No. 01 is the latest one.) In case of abnormal stoppage in following table, accumulated operation time when abnormal happened, alarm code/cause code of stoppage, and cause code of inverter stoppage are recorded.
  • Page 341 Troubleshooting * Deletion of Alarm Code History PSW2 PSW3 PSW2 PSW3 PSW2 PSW3 No.01 (Latest) automatic changing PSW2 PSW3 Pressing PSW1 for 5 seconds Alarm Situation PSW2 PSW3 (6) Checking of Protection Control Information Protection control code is displayed on 7-segment display while a protection control is activated. It is turned OFF when the protection control is canceled.

  • Page 342: Checking Of Using 7-Segment Display (I.u.)

    Troubleshooting Indication Protection Control Remark Pressure Ratio Protection To control the compressor frequency for prevention of operation with high/low Control pressure ratio. High Pressure Increase To control the compressor frequency for prevention of high pressure increase. Protection Control Inverter Current Protection To control the compressor frequency for prevention of inverter current increase in Control the outdoor unit during operation.
  • Page 343 Troubleshooting (2) Checking by 7-Segment Display Only an authorized person can check using this method. ● Before Checking (1) Turn ON the main power supply. Wait for more than 20 seconds to start checking. (2) Checking Items * Parameters of I.U. * Operation Status * Configuration of Inputs and Outputs, and Operation Status (3) Check the locations of 7-segment and push switches.
  • Page 344 Troubleshooting (1) Operation Parameters Calculated by indoor unit Calculated by indoor unit Calculated by Setting temperature of Cycle 1 and Cycle 2 in heating mode Calculated by Setting temperature of Cycle 1 and Cycle 2 in cooling mode Calculated b temperature pen circuit (L/h)
  • Page 345 Troubleshooting (2) Operation Status No action and indicate current opening Terminal 1 of Auxiliary electric heater Terminal 2 of Auxiliary electric heater (Reserved) No Schedule...
  • Page 346 Troubleshooting (3) Room Informations Room temperature Room setting temperature Room Thermo ON/OFF Room temperature Room setting temperature Room Thermo ON/OFF Room temperature Room setting temperature Room Thermo ON/OFF Room temperature Room setting temperature Room Thermo ON/OFF Room temperature Room setting temperature Room Thermo ON/OFF Room temperature Room setting temperature...
  • Page 347 Troubleshooting (4) Inputs / Outputs Indication Data Check Item Indication Contents Output 1 Configuration: Output code+ on/oFF Output 2 Configuration: Output code+ on/oFF Output 3 Configuration: Output code+ on/oFF Output 4 Configuration: Output code+ on/oFF Output 5 Configuration: Output code+ on/oFF Output 6 Configuration: Output code+ on/oFF Output 7...
  • Page 348 Troubleshooting (5) Capacity and power consumption statistics 0: OFF 1: ON Statistics (6) Alarm Codes and Retry Codes Indication Data Check Item Index Contents Bit0: 11 Bit1: 12 Bit2: 13 Sensor Alarms Bit3: 14 Bit4: 16 Bit5: 17 Bit6: 18 Bit0: A1 Bit1: A2 Auxiliary Sensor Alarms...

  • Page 349: Checking Of Master Controller

    Troubleshooting 1.2.2 Checking of Master Controller 1.2.2.1 Checking of Master Controller (Hi-Therma Split) 38 37 36 35 343332 31 ● A Touch Buttons 11 Menu: Tap to enter menu interface 14 Return: Short press to return to the previous step, and long press for more than 3 seconds to dismiss the alarm 12 Favourite: Quick access to frequently used functions...
  • Page 350 Troubleshooting Operation Data ① Rotate the mechanical knob to select Operation Data (Operation Data is highlighted); ② Press the mechanical knob to enter the Operation Data menu and rotate the mechanical knob to display the contents of the Operation Data. ③...

  • Page 351: Checking Of Controller (Hi-Therma Monobloc)

    Troubleshooting 1.2.2.2 Checking of Controller (Hi-Therma Monobloc) 8-29: ● A Button The mechanical button at the bottom of the controller body: Long press for 3 seconds to shut down the unit; Long press for 10 seconds to initialize the system configuration; When alarming, short press the mechanical button to reset the alarm.
  • Page 352 Troubleshooting Operation Data ① Press the icon to select Operation Data; ② Enter the Operation Data menu to display the contents of the Operation Data. ③ Under the Operation Data menu, press to return to the Menu interface.
  • Page 353 Troubleshooting Operation Data Operation Status Cool Mark Heat General Alarm Water Inlet Temperature Water Outlet Temperature Outdoor Ambient Temperature Outdoor Ambient AVG Temperature Ta-ao Operation Cycle 1 Current Water Temperature Tow/Tow3 Water Setting Temperature Operation Current Water Temperature Tow2 Cycle 2 Water Setting Temperature Mixing Valve Position Operation...

  • Page 354: Troubleshooting By Alarm Code

    Troubleshooting 1.2.3 Troubleshooting by Alarm Code Alarm Cause Code Category Detail of Abnormality Main Factors Code of Stoppage Activation of Protection Device Activation of PSH (Pipe Clogging, Excessive Outdoor unit (High Pressure Switch) Refrigerant, Inert Gas Mixing) Incorrect Wiring, Loose Terminals, Disconnect Wire, Outdoor/Indoor Abnormal transmission between the indoor d1-05/d1-06...
  • Page 355 Troubleshooting Alarm Cause Code Category Detail of Abnormality Main Factors Code of Stoppage Water pressure is detected abnormality in the Indoor unit d1-70 Water Pressure Alarm hydraulic cycle Protection Thermostat of DHW Electric High temperature is detected in DHW Electric Indoor unit d1-02 Heater Activation...

  • Page 356: Troubleshooting By Alarm Code (O.u.)

    Troubleshooting 1.2.3.1 Troubleshooting by Alarm Code (O.U.) Alarm Activation of the safety device (high pressure switch) in the outdoor unit Code Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★...
  • Page 357 Troubleshooting Phenomenon Cause Check item Action (Turn OFF Main Switch) Check the heat exchanger for Remove the dust or the dust or for clogging clogging Check the air filter for dust Remove the dust Outdoor Unit: Check for any obstacles at the Insufficient Air Flow to the Heat Exchanger inlet or the outlet of the heat Remove the obstacles...
  • Page 358 Troubleshooting Alarm Abnormal Transmitting between Indoor and Outdoor Units Code Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm is displayed when abnormal transmission between O.U.and I.U. is maintained for three minutes after the normal transmission.Also, abnormal transmission between O.U.and I.U.is maintained for 30 seconds after the micro-computer is automatically reset.
  • Page 359 Troubleshooting Is LED3 (yellow) ON even if Is LED3 (yellow) on I.U. terminals of Transmission between Faulty I.U. PCB1 PCB1 I.U.and O.U. is removed? Check outdoor unit connection Check wiring between Is LED3 (yellow) on I.U. outdoor unit and indoor PCB1 flashing more than units or fuse (EF) for...
  • Page 360 Troubleshooting Phenomenon Cause Check item Action (Turn OFF Main Switch) Power failure or power is not ON Measure the voltage by tester. Supply power. Remove cause of short circuit. Replace Short Circuit between Wires Check for breakage of insulation. fuse on I.U. PCB1 or O.U.main PCB if faulty.
  • Page 361 Troubleshooting Alarm Abnormal Transmitting between Outdoor Unit main PCB and Inverter Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is indicated when abnormality continues for 30 seconds after normal transmitting between the outdoor unit PCB and Inverter, and also abnormality continues for 30 seconds after the microcomputer is automatically reset.
  • Page 362 Troubleshooting Phenomenon Cause Check Item Action(Turn OFF Main Switch) Disconnected Check continuity of wires. Wires, Insufficient Replacing wires, repairing, Check for looseness of connection Contacting or Power Supply Wiring for Outdoor Unit tightening screws and incorrect screws. Incorrect wiring. Check connection No. Connection Disconnected Wires to O.U.
  • Page 363 Troubleshooting Abnormal Inverter Voltage Alarm (Insufficient Inverter Voltage or Overvoltage) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ When either insufficient voltage or overvoltage is detected on the inverter three times in 30 minutes, the operation stops and this alarm code is displayed.
  • Page 364 Troubleshooting Alarm Decrease in Discharge Gas Superheat Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ If the temperature of compressor discharge gas (Td) is below the estimated condensing temperature for 30 minutes during operation, the compressor stops and then the operation is automatically retried after three minutes.
  • Page 365 Troubleshooting Continued Is the outdoor fan normal? Replace the fan motor Is refrigerant correctly Charge correct refrigerant charged? volume. Check the expansion Is gas leaking? valve. Repair leaks of gas. Correctly charge refrigerant. Phenomenon Cause Check Item Action(Turn OFF Main Switch) Check ref.
  • Page 366 Troubleshooting Alarm Increase in Discharge Gas Temperature of Compressor Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ When either of the following conditions occurs, retry operation is performed. However, if it occurs again twice times in the next 60 minutes, this alarm code is displayed;...
  • Page 367 Troubleshooting Alarm Abnormality of Thermistor for Outdoor Unit Ambient (Ta) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is indicated when a short circuit (less than 0.2kΩ) or disconnection (more than 500kΩ) of the thermistor is detected during the operation.
  • Page 368 Troubleshooting Alarm Abnormality of Thermistor for Compressor Discharge Gas Temperature(Td) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is indicated when a short circuit (less than 0.9kΩ) for a second or disconnection (more than 5946kΩ) of the thermistor is detected during the operation.
  • Page 369 Troubleshooting Alarm Abnormality of Thermistor of heat exchanger Liquid Pipe (Te) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is displayed when a short circuit (0.24kΩ or less) or disconnection (500kΩ or more) of the thermistor is detected during heating or cooling operation.
  • Page 370 Troubleshooting Alarm Abnormality of Thermistor of heat exchanger Liquid Pipe (Te2) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is displayed when a short circuit (0.24kΩ or less) or disconnection (500kΩ or more) of the thermistor is detected during heating or cooling operation.
  • Page 371 Troubleshooting Alarm Incorrect Capacity Setting of Indoor Unit and Outdoor Unit Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is indicated when the capacity setting dip switch, DSW3 on the O.U. display PCB is not set (all the settings from #1 to #4 are OFF) or set incorrectly.
  • Page 372 Troubleshooting Alarm Incorrect Indoor Unit No. Setting Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is displayed when the duration of automatic addressing of indoor unit exceeds 5 minutes after power-on of outdoor unit.
  • Page 373 Troubleshooting Alarm Activation of Low Compression Ratio Protection Device Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ If the pressure ratio ε*1) is less than 1.0 for 1 minute or less than 1.5 for 5 minute, the compressor stops. The operation automatically restarts after three minutes.
  • Page 374 Troubleshooting Alarm Activation of High Pressure Decrease Protection Device Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ When the discharge pressure (Pd) continues to be lower than 1.0MPa for 30 minutes or continues to be lower than 0.3MPa for 4 minutes, the compressors stop and then retry the operation after 3 minutes.
  • Page 375 Troubleshooting Activation of Low Pressure Decrease Protection Switch Alarm (Vacuum Operation Protection) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is indicated when a suction pressure (Ps) is lower than 0.09MPa and the same condition occurs twice or more within one hour.
  • Page 376 Troubleshooting Alarm Activation of Inverter Overcurrent Protection Device (2) Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ If instantaneous overcurrent (Cause code of inverter stoppage = 2) occurs on inverter , the compressor stops.
  • Page 377 Troubleshooting Alarm Abnormality of Current Sensor Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ If abnormal fault of sampling circuit (Cause code of inverter stoppage = 8) occurs on inverter , the compressor stops.
  • Page 378 Troubleshooting Alarm Inverter Error Signal Detection Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ If the following abnormality is detected on inverter , the compressor stops. The operation automatically restarts after three minutes.
  • Page 379 Troubleshooting Alarm Abnormality of Inverter Fin Temperature Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ When the following condition occurs three times in 30 minutes, the operation stops and this alarm code is displayed. If this occurs less than three times in 30 minutes, the operation automatically restarts.
  • Page 380 Troubleshooting Alarm Inverter Failure Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ This alarm code is indicated when the following phenomenon occurs three times in 30 minutes. (Retry operation is performed for the first two times.) Condition of Activation: ①...
  • Page 381 Troubleshooting Alarm Abnormality of Fan Motor Code ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ★ When the following condition occurs three times in 30 minutes, the operation stops and this alarm code is displayed. If this occurs less than three times in 30 minutes, the operation automatically restarts.
  • Page 382 Troubleshooting Alarm Compressor Protection Code ★ This alarm code appears when one of the following alarms occurs three times within 6 hours, which may result in serious compressor damages, if the outdoor unit is continuously operated without removing the cause. Alarm Code Content of Abnormality Activation of Protection Device (High Pressure Switch) in Outdoor Unit...

  • Page 383: Troubleshooting Of Alarm Code (I.u.)

    Troubleshooting 1.2.3.2 Troubleshooting of Alarm Code (I.U.) Alarm code Inlet Water thermistor (Tiw) abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 384 Troubleshooting Alarm code Outlet Water Thermistor (Tow) abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 385 Troubleshooting Alarm code Liquid Refrigerant Pipe Thermistor(TL) abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 386 Troubleshooting Alarm code Gas Refrigerant Pipe Thermistor(Tg) abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 387 Troubleshooting Alarm code DHW Thermistor(TDHW) abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 388 Troubleshooting Alarm code Outlet HP Water Thermistor(TowHP) abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 389 Troubleshooting Alarm code Water Pressure Sensor(Pw) Abnormality ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when the pressure sensor voltage decreases to 0.1V or less or increases to 4.9V or more during running.
  • Page 390 Troubleshooting TRANSFER FUNCTION Vout=4.4444*Pg+0.5 OR Vout=Vin*(0.8889*Pg+0.1) Pg= MPa (GAUGE)
  • Page 391 Troubleshooting Alarm code Water pressure alarm ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm is displayed when there is a low water pressure(Pw<0.3bar) or high water pressure(Pw≥4bar) abnormality in the hydraulic system for 3 min and the same condition occurs three times or more within 60 minutes.
  • Page 392 Troubleshooting Alarm code Protection Thermostat of DHW Electric Heater activation ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm is displayed when the temperature inside the DHW tank exceeds the safety temperature and protection thermostat is activated (field supplied).
  • Page 393 Troubleshooting Alarm code Protection Thermostat of Auxiliary Electric Heater Activation ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm is displayed when the temperature inside the auxiliary electric heater exceeds the safety temperature and protection thermostat is activated.
  • Page 394 Troubleshooting Alarm code Mixing overheating limit protection for mixed circuit (Only if cycle 2 is enabled) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is displayed when outlet water temperature of water cycle 2 (Tow2) is too high as following and the same condition occurs three times or more within 60 minutes.
  • Page 395 Troubleshooting Alarm code Water Pump (WP1) malfunction ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm is displayed when iPWM output of WP1 are 0 or 80-100% lasting for 120s and the same condition occurs three times or more within 60 minutes.
  • Page 396 Troubleshooting Alarm code Freeze Protection Stop by indoor unit temperature thermistors ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is displayed when the following conditions are detected and the same condition occurs three times or more within 3 hours Condition 1: TL+ TowHP≤4[°C] and TL≤1[°C] lasting for 180s, during defrosting.
  • Page 397 Troubleshooting Alarm code Hydraulic flow rate abnormality alarm (WP1) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm is displayed when there is a low flow rate abnormality in the hydraulic system as following and the same condition occurs three times or more within 60 minutes.
  • Page 398 Troubleshooting Alarm code Transmission failure between Indoor unit and Master Controller ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● Alarm code is displayed when there is no communication between indoor unit PCB1 and the Master Controller for 5 minutes.
  • Page 399 Troubleshooting Alarm code Auxiliary sensor Abnormality (Tow3) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 400 Troubleshooting Alarm code Auxiliary sensor Abnormality (Tswp) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 401 Troubleshooting Alarm code Auxiliary sensor Abnormality (Tsolar) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 402 Troubleshooting Alarm code Auxiliary sensor Abnormality (Tow2) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 403 Troubleshooting Alarm code Auxiliary sensor Abnormality (Room_amb1…7) ● Alarm code is displayed on the master controller/ the 7-segment of O.U. display PCB / the 7-segment of I.U. PCB1. ● This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor is detected during the heating or cooling operation.
  • Page 404 Troubleshooting Alarm code Alarm sent by Outdoor unit (Outdoor unit alarm 21-29). ● Alarm code is displayed on the master controller / the 7-segment of I.U. PCB1. ● Reset the unit to release the alarm. Alarm code Alarm sent by Outdoor unit (Outdoor unit alarm except 21-29 and EE). ●...

  • Page 405: Checking Procedure For Main Parts

    Troubleshooting 1.3 Checking procedure for main parts 1.3.1 Functions of RSW; DSWs and LEDs 1.3.1.1 Functions of RSW; DSWs and LEDs (O.U.) Part Name Contents LED1 Running status indicator of inverter on O.U. main PCB LED1 Power Supply Indication for O.U. display PCB LEDs LED2 Power Supply Indication for O.U.

  • Page 406: Functions Of Rsw; Dsws And Leds (Iu)

    Troubleshooting SEG1 DSW5 PSW1 DSW1 PSW2 DSW3 PSW3 LED1 DSW6 O.U. Display PCB 1.3.1.2 Functions of RSW; DSWs and LEDs (IU) LEDS and SEGS on I.U. PCB1 SEGS LED3 LED4 LED2 LED1 I.U. PCB1...
  • Page 407 Troubleshooting Part Name Contents LED1 Not used (Green) LED2 This LED indicates the transmission status between the indoor unit and the master controller(Yellow) LEDs LED3 This LED indicates the transmission status between the indoor unit and the outdoor unit(Yellow) LED4 Power source for the I.U.

  • Page 408: Checking Of Pcb And Leds

    Troubleshooting 1.3.2 Checking of PCB and LEDs 1.3.2.1 Checking of O.U. main PCB Outdoor unit main PCB check procedure LED700 Yellow LED802 RED LED1 RED LED2 RED P5V-PGND 5V-GND 12V-GND F201 T16-T21 P15V-PGND...
  • Page 409 Troubleshooting Turn ON outdoor unit Failure of Power Is LED2 of O.U. main PCB Fuse F201 is blowout? Circuit of O.U. main PCB. Power supply of O.U. main Connect Terminal PCB? “L” and “ N” DC310/340V (For power supply circuit: 220~240V) is applied to T16 and T21 DC310/340V (For power Voltage is normal.

  • Page 410: Checking Of I.u.pcb1

    Troubleshooting Checking of LED1 of O.U. main PCB for inverter LED1 is the inverter running status indicator, which indicates the inverter running status and alarm information through flashing status. (1) LED1 flashes slowly when the inverter is standby, or running with a small current. (2) LED1 is on continuously when the inverter is running with high current and the PFC is operating.
  • Page 411 Troubleshooting Connector No. Pin No. Description Default function PCN1-1 Power supply-L phase PCN1 PCN1-3 Power supply-N phase PCN1-7 Earth PCN10-1 Input 4 Solar in PCN10 PCN10-3 Input 3 PCN10-5 Input 6 DHW boost PCN61 PCN61 Not used PCN4-1 Input 1 Demand ON/OFF 1 PCN4 PCN4-3...
  • Page 412 Troubleshooting Connector No. Pin No. Description Default function THM1 THM1 THM2 THM2 THM3 THM3 TowHP THM4 THM4 THM5 THM5 THM6 THM6 Auxsensor 4 Tow2 THM7 THM7 Auxsensor 8 TDHW THM8 THM8 Auxsensor 1 Tow3 THM9 THM9 Auxsensor 3 Tswp THM10 THM10 Auxsensor 2 Tsolar...

  • Page 413: Checking Of Electrical Coil Resistance For Each Electrical Components

    Troubleshooting Turn ON indoor unit Is LED4 of I.U. PCB1 Replace fuse Fuse EFR1 is blowout? EFR1 Check alarm following Is there an alarm code on Is there Power supply Connect the I.U. PCB1? “Troubleshooting for I.U.PCB1 ? Terminal L and by Alarm Code”...

  • Page 414: Checking Of Reversing Valve

    Troubleshooting 1.3.4 Checking of Reversing Valve If outdoor unit does not start the heating operation or defrosting operation, there may be a malfunction of the reversing valve. The troubleshooting is indicated below. Is the connector PCN6 Connector No. Pin No. *1) on O.U.

  • Page 415: Servicing

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2. Servicing 2.1 Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) Safety Introduction D A N G E R DO NOT TOUCH THE ELECTRICAL COMPONENTS WHILE LEDS on O.U. MAIN PCB or LED1 on O.U. DISPLAY PCB ARE ON, TO AVOID ELECTRICAL SHOCK.

  • Page 416: Removing The Pipe Cover

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) Follow the procedure below to remove main parts and components. For mounting follow the reverse procedure of removal. Do not expose the refrigerant cycle to the atmosphere for a long period to avoid moisture or dust entering into the cycle. Be sure to replace parts immediately after removing.

  • Page 417: Removing The Side Cover And Side Electrical Box Cover

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2.1.3 Removing the Side cover and Side Electrical box cover 1. Remove the pipe cover following “2.1.1 Removing the pipe cover” 2. Remove the front cover and upper cover following “2.1.2 Removing the front cover and upper cover” 3.

  • Page 418: Removing The Outdoor Fan Motor

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2.1.5 Removing the outdoor fan motor 1. Remove the pipe cover following “2.1.1 Removing the pipe cover”. 2. Remove the front cover and upper cover following “2.1.2 Removing the front cover and upper cover”. 3.

  • Page 419: Removing The Compressor

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2.1.6 Removing the compressor N O T E ● Do not expose the refrigerant cycle to the atmosphere for a long period to avoid moisture or dust into the cycle. Be sure to replace the compressor immediately after removing. Seal to the suction and discharge pipes when the refrigerant cycle is left unattached for a prolonged time.

  • Page 420: Removing The High Pressure Switch And Low Pressure Switch

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 6. Remove push nuts 1 and 2 which fixes the compressor. Lift the compressor and remove from the unit body. (3 in the figure does not have a push nut). 7. Check if the Faston terminal has any abnormality when replacing the compressor. (Ensure the pull out force greater than 20 N).

  • Page 421: Removing The 4-Way Reversing Valve And Coil

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2.1.8 Removing the 4-way reversing valve and coil 1. Remove the pipe cover following “2.1.1 Removing the pipe cover”. 2. Remove the front cover and upper cover following “2.1.2 Removing the front cover and upper cover”. 3.

  • Page 422: Removing The Electrical Box

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) Expansion valve coil Fixation protrusion Grooves Expansion valve body Brazing Fig.2.12 2.1.10 Removing the electrical box 1. Remove the upper cover following “2.1.2 Removing the front cover and upper cover”. 2. Remove the side electrical box cover following “2.1.3 Removing the Side cover and Side Electrical box cover”. 3.

  • Page 423: Removing Display Pcb

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2.1.11 Removing Display PCB 1. Remove 1 fixing screw and remove the terminal cover. 2. Disconnect all the wiring connected to the O.U. display PCB. 3. Hold the upper part of 4 holders with long nose pliers and remove the O.U.display PCB. Display PCB Side electrical box cover...

  • Page 424: Replacing O.u. Main Pcb

    Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 2.1.12 Replacing O.U. main PCB 1. Remove the front cover and upper cover following “2.1.2 Removing the front cover and upper cover”. 2. Remove the side electrical box cover following “2.1.3 Removing the Side cover and Side Electrical box cover”. 3.
  • Page 425 Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) Electrical box Screws cover Electrical box Screws Screws Tfin Fig.2.17 Replacing PCB and Fin Note: 1. Because of the silicone seal between fin and electrical box, it is not recommended to remove the fin when replacing PCB as it is generally sufficient to replace PCB only.
  • Page 426 Hi-Therma Split system - Outdoor unit (AHW-044/060/080HCDS1) 3. Service spare parts are supplied as electrical box assembly and contain electrical box, Fin, PCB, power terminal block, CN_DSW1/2 wiring. 4. For PCB installation method, follow the reverse procedure of removal. Note that the wiring terminals cannot be inserted and connected incorrectly.

  • Page 427: Hi-Therma Split System - Indoor Unit (Ahm-044/060/080Hcdsaa)

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2 Hi-Therma Split system - Indoor unit 2 Push the front panel forward, (AHM-044/060/080HCDSAA) disengage the snap, and front 2.2.1 Removing the front panel panel can be removed. The indoor unit front panel needs to be removed for any task inside the indoor unit.

  • Page 428: Hanging The Master Controller

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.3 Hanging the master controller The master controller can be hung on the handle of the electrical box cover. Unscrew The electrical box cover can be turned about 160°. 4 The electrical box can be turned about 88°. Take care with the electrical box components in order to avoid damaging.

  • Page 429: Disassembling The Master Controller

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.4 Disassembling the Master Controller ● Please pay attention to protect the LCD display of the Master Controller when removing. ● Please prevent the Master Controller from falling and damaging during operation. Remove the three screws to separate the controller from the mounting plate. Note: Insert the positioning column into the hole on the back of the controller at the position indicated during installation 2.2.5 Removing the side panel...

  • Page 430: Removing The Water System Components

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.6 Removing the water system components ● The following operations need to cut off the water system and drain the water in the machine. ● Follow-up operations can be performed after completely disconnecting the power supply. 1.

  • Page 431: Removing The Water Pump

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.6.3 Removing the Water Pump Step 1: loosen two nuts in counter clockwise direction with tools, remove the retaining plate and upper foam parts. Step 3: the position indicated is the plug-in place of the Step 2: loosen the two nuts counter clockwise to separate the water pump power supply line and signal line, and the water pipe from the water pump and the water pump.

  • Page 432: Removing The Expansion Vessel

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.6.4 Removing the Expansion Vessel Step 1: remove the 4 screws. Step 2: loosen the nut in the counter clockwise direction to separate the piping from the expansion vessel. Step 3: loosen the screws to remove the expansion vessel and fixing plate.

  • Page 433: Removing The Plate Heat Exchanger Assembly

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.6.5 Removing the plate heat exchanger assembly To remove the plate heat exchanger assembly, first remove the electrical box, drain pan and deflector. Refer to the following steps. 2.2.6.5.1 Removing the electrical box assembly Remove the four screws to separate the electrical box assembly from the machine.
  • Page 434 Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.6.5.4 Removing the plate heat exchanger assembly Step 1: Loosen the nut in counterclockwise direction. Step 2: Remove the 4 screws. Step 3: After completing the above steps, the plate heat exchanger assembly as shown in the figure can be removed.
  • Page 435 Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) Plate heat exchanger assembly Fixing plate of plate heat exchanger Insulation foam Fastening nut Step 4: As shown above, remove the 2 fastening nuts and remove the plate heat exchanger fixing plate、 insulation foam and plate heat exchanger assembly. Step 5: The installation of heat exchanger components can be realized according to the above reverse steps.

  • Page 436: Removing The Electrical Components

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.7 Removing the Electrical Components TB6 (Optional Parts) EF1~EF3 AR1-3 PCB2 (Optional Parts) PCB5 PCB3 EFR1 PCB4 PCB1...

  • Page 437: Removing The Pcb1

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.7.1 Removing the PCB1 To Remove the PCB1, the following operations should be done: Plastic holders ● Remove the front cover, as explained in “2.2.1 Removing the front cover” 1. Remove all the connectors connected to the PCB1. 2.

  • Page 438: Removing The Pcb4

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.7.3 Removing the PCB4 To Remove the PCB4, the following operations should be done: ● Remove the front cover, as explained in “2.2.1 Removing the front cover” 1. Remove all the connectors connected to the PCB4. 2.

  • Page 439: Removing The Relays (Ar1~3)

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.7.5 Removing the relays (AR1~3) ● Remove the front cover as explained in chapter “2.2.1 Removing the front cover” ● Open the Electrical box cover as explained in chapter “2.2.2 Opening the Electrical box” Then, 1.

  • Page 440: Removing The Terminal Board (Tb1)

    Hi-Therma Split system - Indoor unit (AHM-044/060/080HCDSAA) 2.2.7.7 Removing the terminal board (TB1) ● Remove the front cover as explained in “2.2.1 Removing the front cover” ● Open the Electrical Box as explained in “2.2.2 Opening the Electrical Box” 1. Remove all the cables connected to the terminal board. 2.

  • Page 441: Hi-Therma Integra System - Indoor Unit (Ahs-044/060/080Hcdsaa-23)

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3 Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.1 Removing the upper front panel The indoor unit front panel needs to be removed for any task inside the indoor unit. 1) Remove the upper front panel as is shown in the figure below. 2) To reassemble a new upper front panel, proceed in a reverse way than disassembling.

  • Page 442: Removing The Side Panel

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.3 Removing the side panel The steps for removing the left side panel are the same. 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Remove the right or left side panel as is shown in the figure below.

  • Page 443: Removing The Back Panel

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.4 Removing the back panel 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Remove the side panels as explained in “2.3.3 Removing the side panels”.

  • Page 444: Opening The Electrical Box

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.5 Opening the electrical box Disconnect the unit from the power supply before touching any of the parts in order to avoid an electric shock. 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Open the electrical box cover as shown in the figure below.

  • Page 445: Hanging The Master Controller

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.6 Hanging the master controller The master controller can be hung on the handle of the electrical box cover.

  • Page 446: Disassembling The Master Controller

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.7 Disassembling the Master Controller ● Please pay attention to protect the LCD display of the Master Controller when removing. ● Please prevent the Master Controller from falling and damaging during operation.

  • Page 447: Removing The Water System Components

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.8 Removing the water system components ● The following operations need to cut off the water system and drain the water in the machine. ● Follow-up operations can be performed after completely disconnecting the power supply. 2.3.8.1 Removing the Auxiliary Electric Heater components 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”.

  • Page 448: Removing The Safety Valve And Air Purge Valve

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 6) To reassemble a new auxiliary electric heater, proceed in a reverse way than disassembling.. ● At the connection of water pipe nut and electric heater pipe nozzle, a rubber gasket needs to be installed to prevent water leakage. ●...

  • Page 449: Removing The Water Pump

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.8.3 Removing the Water Pump 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Rotate the electrical box by 93° as explained in “2.3.5 Opening the electrical box”. 3) Remove the water pump as is shown in the figure below.

  • Page 450: Removing The Expansion Vessel

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.8.4 Removing the Expansion Vessel 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Remove the right and left side panels as explained in “2.3.3 Removing the side panel”.

  • Page 451: Removing The Plate Heat Exchanger Assembly

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.8.5 Removing the plate heat exchanger assembly 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Remove the left side panel as explained in “2.3.3 Removing the side panel”.

  • Page 452: Removing The 3-Way Reversing Valve

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 6) To reassemble a new plate heat exchanger, proceed in a reverse way than disassembling.. ● At the connection of water pipe nut and plate heat exchanger, and at the connection of water pipe nut and water pipe nozzle, a rubber gasket needs to be installed to prevent water leakage.
  • Page 453 Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) ● At the connection of water pipe nut and valve body, a rubber gasket needs to be installed to prevent water leakage. ● When removing the valve body, be careful not to damage the gasket. If damaged, it needs to be replaced with a new one; ●...

  • Page 454: Removing The Thermostat

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.9 Removing the Thermostat 2.3.9.1 Resetting the Thermostat When the water temperature in the DHW tank exceeds 85±5 °C, the thermostat is activated, the power of the DHW tank electric heater is disconnected and the heating is stopped. After the thermostat is reset, the electric heater can resume normal operation.

  • Page 455: Removing The Thermostat

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.9.2 Removing the Thermostat 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Rotate the electrical box by 93°...

  • Page 456: Removing The Dhw Electric Heater

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.10 Removing the DHW Electric Heater 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Remove the DHW electric heater as is shown in the figure below.

  • Page 457: Removing The Dhw Thermistors

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.11 Removing the DHW Thermistors 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Rotate the electrical box by 93°...

  • Page 458: Installing The Electronic Anode (Optional Part)

    Hi-Therma Integra system - Indoor unit (AHS-044/060/080HCDSAA-23) 2.3.12 Installing the Electronic Anode (Optional Part) 1) Remove the upper front panel as explained in “2.3.1 Removing the upper front panel”. 2) Remove the lower front panel as explained in “2.3.2 Removing the lower front panel”. 3) Rotate the electrical box by 93°...

  • Page 459: Hi-Therma Monobloc System (Ahz-044/080Hcds1)

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4 Hi-Therma Monobloc System (AHZ-044/080HCDS1) Safety Introduction D A N G E R DO NOT TOUCH THE ELECTRICAL COMPONENTS WHILE LEDS on O.U. MAIN PCB or LED1 on O.U. DISPLAY PCB ARE ON, TO AVOID ELECTRICAL SHOCK. WAIT UNTIL ALL LEDS TURN OFF.

  • Page 460: Removing The Covers

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.1 Removing the Covers 2.4.1.1 Removing the Upper cover 1. Remove the 8 screws fixing the Upper cover. Upper cover 2. Pull the Upper cover upwards and remove it. 2.4.1.2 Removing the Service Cover 1. Remove the 8 screws fixing the service cover.

  • Page 461: Removing The Electrical Box Cover On The Indoor Part

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2. Pull the service cover in the direction shown by the arrow and remove it； 2.4.1.3 Removing the Electrical Box Cover on the Indoor Part ● Remove the service cover as explained in “2.3.1.2 Removing the Service cover” Then, 1.

  • Page 462: Removing The

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.1.4 Removing the Front Cover ● Remove the Upper cover as explained in “2.3.1.1 Removing the Upper cover” ● Remove the service cover, as explained in “2.3.1.2 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the Electrical box cover” then, 1.
  • Page 463 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2. Pull the Rear cover backwards and remove it Rear cover 2.4.1.6 Removing the Valve Cover ● Remove the service cover, as explained in “2.3.1.2 Removing the Service cover” ● Remove the rear cover, as explained in “2.3.1.5 Removing the Rear cover” Then, 1.

  • Page 464: Removing The Fan Grille

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.2 Removing the Fan Grille 1. Remove the 4 screws fixing the Fan grille. 2. Pull the fan grille backwards and remove it. Fan grille 2.4.3 Removing the Propeller Fan 1. Remove the Fan grille, as explained in “2.3.2 Removing the Fan grille”. 2.

  • Page 465: Removing The Refrigerant Components

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) Fan motor 2.4.5 Removing the Refrigerant Components 2.4.5.1 Removing the Low Pressure Switch (PSL) ● Remove the Upper cover, as explained in “2.3.1.1 Removing the Upper cover” ● Remove the service cover, as explained in “2.3.1.2 Removing the Service cover” ●...

  • Page 466: Removing The High Pressure Switch (Psh)

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.5.2 Removing the High Pressure Switch (PSH) ● Remove the Upper cover, as explained in “2.3.1.1 Removing the Upper cover” ● Remove the service cover, as explained in “2.3.1.2 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the Electrical box cover” ●...

  • Page 467: Removing The 4-Way Reversing Valve Coil

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) Fixation protrusion Grooves The electronic expansion valve will malfunction if the coil does not fix firmly with the valve body by the groove and the fixation protrusion. 4. Once the Expansion valve coil has been removed, remove the brazing as shown in the figure using a blowtorch. Protect the connecting wires and pipe insulation from the brazing flame.

  • Page 468: Removing The 4-Way Reversing Valve

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.5.5 Removing the 4-way reversing valve ● Remove the Upper cover as explained in “2.3.1.1 Removing the Upper cover” ● Remove the Service cover, as explained in “2.3.1.2 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the electrical box cover” ●...

  • Page 469: Removing Cycle And Hydraulic Components

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.6 Removing Cycle and Hydraulic Components ● The following operations need to cut off the water system and drain the water in the machine. ● Follow-up operations can be performed after completely disconnecting the power supply. ●...

  • Page 470: Removing The Safety Valve

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.6.2 Removing the Safety Valve ● Remove the service cover, as explained in “2.3.1.2 Removing the Service cover” Then, 1. Drain the water circuit of the unit. 2. Remove the cable tie fixing the drain hose. 3.

  • Page 471: Removing The Water Pump

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.6.3 Removing the Water Pump ● Remove the Upper cover, as explained in “2.3.1.1 Removing the Upper cover” ● Remove the service cover, as explained in “2.3.1.2 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the Electrical box cover” ●...
  • Page 472 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 4. Remove the 4 screws fixing the water pump support. Water pump support 5. Remove the wiring from the clamps where it is fixed. 6. Loosen the upper nut of the water pump with tools in counterclockwise direction, and remove the water pump assembly.
  • Page 473 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 7. Loosen the nut under the water pump with tools in a counterclockwise direction to separate the water pump from the water pipe. Gasket 8. Cut two cable ties and separate the foam parts from the water pump; Foam parts Cable tie...

  • Page 474: Removing The Pressure Sensor (Water Cycle)

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 9. Cut a cable tie and separate the rubber cover from the water pump; Rubber cover Cable tie Water pump ● Pay attention to the installation of gasket during disassembly and assembly, otherwise the pipe may leak. ●...

  • Page 475: Removing The Expansion Vessel

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.6.5 Removing the Expansion Vessel ● Remove the Upper cover, as explained in “2.3.1.1 Removing the Upper cover” ● Remove the service cover, as explained in “2.3.1. 2 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the electrical box cover” ●...
  • Page 476 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 3. Remove the fixing plate and 4 fixing screws at the top of the expansion vessel, remove the 2 fixing screws at the bottom of the expansion vessel, and loosen the Hexagon nuts on the top of the expansion vessel. Pay attention to protect the gasket.

  • Page 477: Removing The Compressor

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.6.6 Removing the Compressor ● The compressor is connected by brazing. Check to ensure whether there are flammable things around or not when using a burner for pipe connections. Otherwise, oil existing pipe inside may ignite. ●...
  • Page 478 Hi-Therma Monobloc System (AHZ-044/080HCDS1) Blazing Suction pipe Blazing Discharge pipe Blazing Suction pipe Blazing Discharge pipe 4. In case that more space is necessary to take out the compressor, remove the screw of the metal sheet. Screw 5. Remove push nuts which fix the compressor with One-way ratchet wrench. Lift the compressor and remove from the unit body.

  • Page 479: Removing The Electrical Components

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) Compressor Accumulator Push nut Compressor Vibration- proof rubber 2.4.7 Removing the Electrical Components ● DO NOT touch electrical components on the PCB. Pay attention not to bend or apply much force onto PCB in order to avoid PCB failure.

  • Page 480: Removing The Electrical Box Assembly On Outdoor Part

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.2 Removing the Electrical Box Assembly on Outdoor Part 1. Disconnect all the wiring connected to the outdoor part electrical box. 2. As shown in the figure below, remove the 4 screws securing the outdoor part electrical box, and then remove the outdoor part electrical box assembly 3.

  • Page 481: Replacing O.u. Main Pcb

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.3 Replacing O.U. main PCB ● Remove the Upper cover, as explained in”2.3.1.1 Removing the Upper cover” ● Remove the Service cover, as explained in”2.3.1.2 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the electrical box cover on indoor part” ●...
  • Page 482 Hi-Therma Monobloc System (AHZ-044/080HCDS1) Electrical box cover Screws Screws Tfin Fig.2.21 Replacing PCB and Fin Note: 1. Because of the silicone seal between fin and electrical box, it is not recommended to remove the fin when replacing PCB as it is generally sufficient to replace PCB only. If the fin is also removed, be sure to apply a silicone seal to the original location or there is a risk of water intruding into the PCB and causing short circuit.
  • Page 483 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 3. Service spare parts are supplied as electrical box assembly and contain electrical box, Fin, PCB, power terminal block, CN_DSW1/2 wiring. 4. For PCB installation method, follow the reverse procedure of removal. Note that the wiring terminals cannot be inserted and connected incorrectly.

  • Page 484: Removing The Electrical Box Assembly On Indoor Part

    Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.4 Removing the Electrical Box Assembly on Indoor Part Optional Parts...
  • Page 485 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.4.1 Removing the PCB1 To Remove the PCB1, the following operations should be done: ● Remove the service cover, as explained in “2.3.1.2 Removing the Plastic holders service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the electrical box cover”...
  • Page 486 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.4.3 Removing the PCB7 To Remove the PCB7, the following operations should be done: ● Remove the service cover, as explained in “2.3.1.1 Removing the Service cover” ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the electrical box cover”...
  • Page 487 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.4.5. Removing the PCB5 To Remove the PCB5, the following operations should be done: ● Remove the Service cover, as explained in “2.3.1.2 Removing the Service cover”. ● Remove the electrical box cover, as explained in “2.3.1.3 Removing the electrical box cover”, Then 1.
  • Page 488 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.4.7 Replacement of the fuses (EF2~3,EFR,EFR1) ● Remove the service cover as explained in chapter “2.3.1.2 Removing the Service cover” ● Remove the electrical box cover as explained in chapter “2.3.1.3 Removing the Electrical box cover”. 1.
  • Page 489 Hi-Therma Monobloc System (AHZ-044/080HCDS1) 2.4.7.4.9. Removing the terminal board (TB5) ● Remove the Service cover as explained in “2.3.1.2 Removing the service cover” ● Remove the Electrical box cover, as explained in “2.3.1.3 Removing the Electrical box cover” 1. Remove all the cables connected to the terminal board. 2.

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