Panasonic CS-NZ25VKE Service Manual
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Panasonic CS-NZ25VKE Service Manual

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This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
R32 REFRIGERANT
– This Air Conditioner contains and operates with refrigerant R32.
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation,
maintenance and/or service of this product.
DEICE
DEICE
WARNING
IMPORTANT SAFETY NOTICE
PRECAUTION OF LOW TEMPERATURE
CAUTION
Indoor Unit
CS-NZ25VKE
CS-NZ35VKE
CS-NZ50VKE
CS-QZ25VKE
© Panasonic Corporation 2019
Order No: PAPAMY1908068CE
Outdoor Unit
CU-NZ25VKE
CU-NZ35VKE
CU-NZ50VKE
CU-QZ25VKE
Destination
North Europe
in the Schematic

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Summary of Contents for Panasonic CS-NZ25VKE

  • Page 1 – This Air Conditioner contains and operates with refrigerant R32. THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL. Refer to National, State, Territory and local legislation, regulations, codes, installation & operation manuals, before the installation, maintenance and/or service of this product. © Panasonic Corporation 2019...

  • Page 2: Table Of Contents

    To Replace Wireless LAN Module   (Network Adapter) ........140 Installation Instruction ........36       18.4 ‘Panasonic Comfort Cloud’ App Setting   12.1 Select the Best Location ......36     Procedure [After Replace Main Printed 12.2 Indoor Unit ..........37  ...

  • Page 3: Safety Precautions

    1. Safety Precautions  Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.  Confirm the type of gas used before installation.  Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed.
  • Page 4 WARNING  For R410A/R32 model, use piping, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury. ...
  • Page 5 CAUTION Do not touch the sharp aluminium fin, sharp parts may cause injury. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture. Select an installation location which is easy for maintenance. Incorrect installation, service or repair of this air conditioner may increase the risk of rupture and this may result in loss damage or injury and/or property.

  • Page 6: Precaution For Using R32 Refrigerant

    2. Precaution for Using R32 Refrigerant  The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models. However, pay careful attention to the following points: WARNING When connecting flare at indoor side, make sure that the flare connection is used only once, if torqued up and released, the flare must be remade.
  • Page 7 CAUTION Installation (Space)  Must ensure the installation of pipe-work shall be kept to a minimum. Avoid use dented pipe and do not allow acute bending.  Must ensure that pipe-work shall be protected from physical damage.  Must comply with national gas regulations, state municipal rules and legislation. Notify relevant authorities in accordance with all applicable regulations.
  • Page 8 CAUTION 2-8. Checks to electrical devices  Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.  Initial safety checks shall include but not limit to:- That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking. That there is no live electrical components and wiring are exposed while charging, recovering or purging the system.
  • Page 9 CAUTION Removal and evacuation  When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: •...
  • Page 10 CAUTION Recovery  When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.  When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. ...

  • Page 11: Specifications

    3. Specifications Indoor CS-NZ25VKE CS-NZ35VKE Model Outdoor CU-NZ25VKE CU-NZ35VKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.85 2.50 3.00 0.85 3.50 4.00 Capacity BTU/h 2900 8530 10200 2900...
  • Page 12 Indoor CS-NZ25VKE CS-NZ35VKE Model Outdoor CU-NZ25VKE CU-NZ35VKE Type Hermetic Motor (Rotary) Hermetic Motor (Rotary) Compressor Motor Type Brushless (4-poles) Brushless (4-poles) Output Power Type Cross-Flow Fan Cross-Flow Fan Material ASG20K1 ASG20K1 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power 47.3...
  • Page 13 Indoor CS-NZ25VKE CS-NZ35VKE Model Outdoor CU-NZ25VKE CU-NZ35VKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) 3 (9.8) ~ 20 (65.6)
  • Page 14 Indoor CS-NZ50VKE CS-QZ25VKE Model Outdoor CU-NZ50VKE CU-QZ25VKE Performance Test Condition EUROVENT EUROVENT Phase, Hz Single, 50 Single, 50 Power Supply Min. Mid. Max. Min. Mid. Max. 0.98 5.00 6.00 0.85 2.50 3.00 Capacity BTU/h 3340 17100 20500 2900 8530 10200 Kcal/h 4300 5160...
  • Page 15 Indoor CS-NZ50VKE CS-QZ25VKE Model Outdoor CU-NZ50VKE CU-QZ25VKE Type Hermetic Motor (Rotary) Hermetic Motor (Rotary) Compressor Motor Type Brushless (4 poles) Brushless (4-poles) Output Power Type Cross-Flow Fan Cross-Flow Fan Material ASG33 ASG20K1 Motor Type DC / Transistor (8-poles) DC / Transistor (8-poles) Input Power 89.0 47.3...
  • Page 16 Indoor CS-NZ50VKE CS-QZ25VKE Model Outdoor CU-NZ50VKE CU-QZ25VKE Pipe Diameter (Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2) 6.35 (1/4) / 9.52 (3/8) Standard length m (ft) 5.0 (16.4) 5.0 (16.4) Length range (min – max) m (ft) 3 (9.8) ~ 20 (65.6) 3 (9.8) ~ 20 (65.6) I/D &...

  • Page 17: Features

    4. Features  Inverter Technology Wider output power range Energy saving Quick Cooling Quick Heating More precise temperature control  Environment Protection Non-ozone depletion substances refrigerant (R32)  Long Installation Piping Long piping up to 20 meters during single split connection only ...

  • Page 18: Location Of Controls And Components

    5. Location of Controls and Components Indoor Unit Air Purifying Filter Front panel Aluminium fin Auto OFF/ON button Use when remote control is misplaced or a malfunction occurs. Horizontal airflow direction louver Manually adjustable. Remote Control Receiver Vertical airflow direction louver Do not adjust by hand.

  • Page 19: Dimensions

    6. Dimensions Indoor Unit 6.1.1 CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE <Top View> <Side View> <Front View> <Side View> Air intake direction 2 ±0.5 2 ±0.5 Left piping Air outlet Right piping hole direction hole <Remote Control> <Bottom View> Gas side <Rear View>...
  • Page 20 6.1.2 CS-NZ50VKE <Top View> <Side View> <Front View> <Side View> Air intake 1120 direction Left piping Right piping Air outlet hole hole direction <Remote Control> <Bottom View> <Rear View> (41-61) <Remote Control Holder> Gas side Liquid side Relative position between the indoor unit and the installation plate <Front View> 13.3 Installation plate...

  • Page 21: Outdoor Unit

    Outdoor Unit 6.2.1 CU-NZ25VKE CU-NZ35VKE CU-QZ25VKE <Top View> Space necessary for 68.5 installation 21.9 (124) 53.4 100 mm 100 mm 1000 mm Anchor Bolt Pitch 330 x 540 2-way valve at Liquid side (High Pressure) 3-way valve at Gas side (Low Pressure) <Side View>...

  • Page 22: Refrigeration Cycle Diagram

    7. Refrigeration Cycle Diagram CS-NZ25VKE CU-NZ25VKE CS-NZ35VKE CU-NZ35VKE CS-QZ25VKE CU-QZ25VKE INDOOR OUTDOOR LIQUID EXPANSION TEMP. SIDE VALVE MUFFLER STRAINER SENSOR 2-WAY VALVE PIPE TEMP. INTAKE SENSOR 2 TEMP. SENSOR CONDENSER PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR)

  • Page 23: Cs-Nz50Vke Cu-Nz50Vke

    CS-NZ50VKE CU-NZ50VKE INDOOR OUTDOOR LIQUID EXPANSION TEMP. SIDE VALVE STRAINER SENSOR 2-WAY VALVE PIPE TEMP. INTAKE SENSOR 2 TEMP. SENSOR CONDENSER PIPE TEMP. PIPE SENSOR 1 TEMP. SENSOR HEAT EXCHANGER (EVAPORATOR) SIDE 4-WAYS VALVE 3-WAY RECEIVER VALVE TANK SENSOR COMPRESSOR COOLING HEATING...

  • Page 24: Block Diagram

    8. Block Diagram...

  • Page 25: Wiring Connection Diagram

    9. Wiring Connection Diagram Indoor Unit 9.1.1 CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE REMARKS ELECTRONIC CONTROLLER B: BLUE (SUB) P: PINK ELECTRONIC CONTROLLER CN-WLAN (WIFI MODULE) (WHT) BR: BROWN GROUNDING O: ORANGE TERMINAL CN-WLAN BL: BLACK FOR OUTDOOR CN-103 (BLK) TERMINAL (WHT) G/GRN: GREEN...
  • Page 26 9.1.2 CS-NZ50VKE FOR OUTDOOR POWER FOR INDOOR POWER SUPPLY CONNECTION SUPPLY CONNECTION GROUNDING GROUNDING ELECTRONIC CONTROLLER ELECTRONIC CONTROLLER CN-WLAN TERMINAL TERMINAL REMARKS (WIFI MODULE) (SUB) (WHT) B : BLUE TERMINAL TERMINAL P : PINK BOARD BOARD CN-WLAN CN-103 BR : BROWN (BLK) (WHT) O : ORANGE...

  • Page 27: Outdoor Unit

    Outdoor Unit FOR OUTDOOR POWER SUPPLY CONNECTION SINGLE PHASE YELLOW TO INDOOR UNIT (YLW) OR (C) POWER SUPPLY BLUE REMARKS REACTOR (BLU) BLU : BLUE (RED) TERMINAL OR (R) OR (S) BLK : BLACK BOARD WHT : WHITE RED : RED TRADEMARK YLW : YELLOW COMPRESSOR TERMINAL...

  • Page 28: Electronic Circuit Diagram

    10. Electronic Circuit Diagram 10.1 Indoor Unit C401 5V_3 5V_3 ELECTRONIC C400 CONTROLLER R401 R406 GROUNDING R405 NONE CN-WLAN (SUB) TERMINAL CN–WLAN (BLK) FOR OUTDOOR TERMINAL (WHT) C402 C403 POWER SUPPLY NONE NONE BOARD CONNECTION CN-103 (WHT) Sensor (Thermistor) Characteristics CN-DATA 3 GROUNDING (YLW)

  • Page 29: Outdoor Unit

    10.2 Outdoor Unit FOR OUTDOOR POWER SUPPLY CONNECTION SINGLE PHASE TO INDOOR UNIT POWER SUPPLY REACTOR TERMINAL BOARD RAT2 RAT1 DATA (GRY) (GRY) (RED) 15.8k COMMUNICATION CIRCUIT NOISE FILTER FUSE 5 CIRCUIT AC-BLK (20A 250V) (BLK) OUTDOOR AIR TEMP. SENSOR (THERMISTOR) FUSE 6 FUSE 8 FUSE 1...

  • Page 30: Printed Circuit Board

    11. Printed Circuit Board 11.1 Indoor Unit 11.1.1 Main Printed Circuit Board AC303 CN-FM CN-CNT CN-STM3 CN-STM1 CN-RMT CN-TH CN-DATA3 CN-DISP CN-RCV JP1 (Random Auto Restart enable/disable)
  • Page 31 11.1.2 Indicator Printed Circuit Board 11.1.2.1 CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE LED205 LED203 LED201 LED204 LED202 CN-DISP 11.1.2.2 CS-NZ50VKE LED205 LED203 LED201 LED204 LED202 CN-DISP...
  • Page 32 11.1.3 Receiver Printed Circuit Board 11.1.3.1 CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE CN-RCV 11.1.4 Sub Printed Circuit Board CN-WLAN CN-103...
  • Page 33 11.1.5 WIFI Module Printed Circuit Board...

  • Page 34: Outdoor Unit

    11.2 Outdoor Unit 11.2.1 Main Printed Circuit Board 11.2.1.1 CU-NZ25VKE CU-NZ35VKE CU-QZ25VKE POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...
  • Page 35 11.2.1.2 CU-NZ50VKE POWER TRANSISTOR (IPM) CN-MTR2 CURRENT TRANSFORMER (CT) CN-MTR1 CN-STM1 CN-TH1 CN-HOT DATA CN-TANK AC-WHT AC-BLK...

  • Page 36: Installation Instruction

    12. Installation Instruction 12.1 Select the Best Location 12.1.1 Indoor Unit 12.1.3 Indoor/Outdoor Unit Installation  Diagram Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  There should not be any heat source or steam Piping direction Attention not to bend (Front side)

  • Page 37: Indoor Unit

    12.2 Indoor Unit 12.2.1 How to Fix Installation Plate The mounting wall shall be strong and solid enough to prevent it from vibration. Ceiling Wall Wall More than 1 More than 1 2 screw Indoor unit More than 2 Installation plate 1 266 mm PIPE HOLE...
  • Page 38 12.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping Insert the piping sleeve to the hole. Wall Fix the bushing to the sleeve. Indoor Outdoor Cut the sleeve until it extrudes about 15 mm 15 mm Approx.
  • Page 39 12.2.3 Indoor Unit Installation ● Do not turn over the unit without it’s shock absorber during pull out the piping. It may cause intake grille damage. ● Use shock absorber during pull out the piping to protect the intake grille from damage. Piping Piping Intake grille...
  • Page 40 Exchange the drain hose and the cap Rear view for left piping installation Connection cable Piping Drain hose More than 950 mm (1.0 ~ 1.5HP) Connection cable or 1150 mm (2.0HP) Drain hose Drain cap Adjust the piping slightly Drain hose downwards.
  • Page 41 Remove the tapes and connect the power supply cord and connection cable between indoor unit and outdoor unit according to the diagram below. Terminals on the outdoor unit Colour of wires (connection cable) Terminals on the indoor unit (Power supply cord) Terminals on the isolating devices (L) (N) (Disconnecting means)
  • Page 42 Terminal Control Board Board Earth Wire longer than Recommended others length (mm) AC wires for safety reason Holder a b c d Recommended length (mm) 50 40 35 60 Tape Indoor & outdoor connection cable Connection Outdoor unit cable Secure the connection cable onto the control board with the holder. WARNING This equipment must be properly earthed.

  • Page 43: Outdoor Unit

    12.3 Outdoor Unit 12.3.1 Install the Outdoor Unit  After selecting the best location, start installation to Indoor/Outdoor Unit Installation Diagram. Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand firmly with bolt or nails.
  • Page 44 AIR PURGING METHOD IS PROHIBITED FOR R32 SYSTEM 12.3.3 Air Tightness Test on the Refrigerating System Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation. There is no extra refrigerant in the outdoor unit for air purging. ...
  • Page 45 12.3.3.1 Cutting and Flaring the Piping Please cut using pipe cutter and then remove the burrs. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. Please make flare after inserting the flare nut onto the copper pipes.
  • Page 46 In case of outdoor power supply Cable connection to the power supply through Isolating Devices (Disconnecting means). Connect approved type polychloroprene sheathed power supply cord 3 x 1.5 mm (1.0 ~ 1.5HP), 3 x 2.5 mm (2.0HP) type designation 60245 IEC 57 or heavier cord to the terminal board, and connect the others end of the cord to Isolating Devices (Disconnecting means).
  • Page 47 12.3.6 How to Take Out Front Grille Please follow the steps below to take out front grille if Screw necessary such as when servicing. Front Set the vertical airflow direction louvers to the grille horizontal position. Vane Remove the 2 caps (1.0 ~ 1.5HP) or 3 caps (Move the vane to (2.0HP) on the front grille as shown in the...
  • Page 48 12.3.9 Installation of Dust Collector Filter Dust collector fi lter 7 Open the front panel. Remove the air filter. Put the Dust collector filter into place as shown in illustration. Air filter 12.3.10 Check the Drainage  Open front panel and remove air filters. (Drainage checking can be carried out without removing the front grille.) ...

  • Page 49: Installation And Servicing Air Conditioner Using R32

    13. Installation and Servicing Air Conditioner using R32 13.1 About R32 Refrigerant For air conditioning refrigerants such as R410A, the refrigerants were collected back in order to prevent their air dissipation, to curbe the global warming impact, in case they were released into the atmosphere. In the “4th Environmental Basic Plan”, 80% reduction of greenhouse gas emissions by 2050 is required, and due to this requirement, further reduction in the emission of high greenhouse effect gas, such as CFCs, is required.
  • Page 50 2. Characteristic of Pressure As shown in Table 2, R32 does not have much difference in vapor pressure at the same refrigerant temperature comparing to R410A, but comparing to R22, it is higher at 1.6 times more. Thus, the same as in case of R410A, it is necessary to do installation and service using high-pressure tools and components.

  • Page 51: Refrigerant Piping Installation • Tools Used In Services

    13.3 Refrigerant piping installation • Tools used in services 13.3.1 Required Tools R32 refrigerant air conditioners use the common parts as R410A air conditioners for two-way valves and three-way valves (diameters of service ports); thus, they maintain commonality in the maintenance of the compressive strength, the size of pipe flaring, and the size of flare nuts as R410A.
  • Page 52 3. Torque wrenches (diameters 1/2, 5/8) Manifold gauges / Charging hoses In order to strengthen the compressive strength, the diameters of wrenches change depending on the flare nut sizes. Torque wrenches Differences in charging hoses Differences in torque wrenches (common R410A) Normal 5.1 MPa 3.4 MPa...
  • Page 53 7. HFC refrigerant_Electric gas leakage tester 9. Refrigerant cylinders R32 refrigerant is often used for other mixed Refrigerant cylinders for R410A are painted in pink, refrigerant (R410A, R404A, R407C etc.). Therefore, and the ones for R32 are painted in other colors that the usage of existing HFC detectors is possible, but in might subject to change according to the international order to detect more accurately, we recommend to...
  • Page 54 11. Tools used for refrigerant piping installations and services Tools for R410A Common with R32 Possibility of usage for R22 ○ ○ Pipe cutters, reamers or scrapers ○ ○ Flare tools (clutch type) ○ ○ Torque wrench (1/4, 3/8) ○ ×...

  • Page 55: New Installation, Relocation, Repairing Of Refrigerant Cycle System The Procedures

    13.4 New installation, Relocation, Repairing of Refrigerant Cycle System The Procedures Relocation Repairing refrigerant cycle Installation Indoor / outdoor units and piping Pump down Refrigerant recovery • Displacing pipes and wires, and displacing indoor / outdoor units Prevention of impurity •...

  • Page 56: Piping Installation Of R32

    13.5 Piping installation of R32 13.5.1 Pipe materials used and flaring Copper pipes are used for refrigerant piping. Pipes Pipe thickness which comply with JIS Regulations need to be used. Room air conditioners which use R410A and R32 O and OL materials Thickness (mm) have higher pressure;...

  • Page 57: Installation, Relocation, And Service

    13.6 Installation, Relocation, and Service 13.6.1 Air purge and gas leak test for new installation (using new refrigerant pipes) using vacuum pump (From the point of view of global environment protection, do not release CFCs into the atmosphere during installation work) 1.
  • Page 58 13.6.2 Process of refrigerant recovery 1. Connect the center charging hose of manifold gauge to the in-let side of recovery device. 2. Connect the valves of the discharge side of recovery device and liquid side of refrigerant cylinder with red hose (charging hose).
  • Page 59 13.6.3 Relocation 1. Removing the air conditioning unit a) Recovery of outdoor unit refrigerant by pumping down Press “forced cooling button” (as a general rule, since 1998 the name of cooling testing button is changed, and this name is unified within the air conditioning industry), and then you are able to start cooling operation in which the room temperature is low, and you can recover the refrigerant from the outdoor unit.
  • Page 60 13.6.6 Re-insertion of refrigerant in service When re-insertion is needed, follow the procedures to ensure the insertion of new refrigerant at correct amount. 1. Attach charging hose (blue) to the service port of the outdoor unit. 2. Attach charging hose (red) to the vacuum pump. Fully open the 2-way and 3-way valves. 3.

  • Page 61: Repairing Of Refrigerant Cycle / Brazing Point

    13.7 Repairing of refrigerant cycle / Brazing point 13.7.1 Preparation for repairing of refrigerant cycle / brazing Brazing which is a technique needed for repairing refrigerant cycle requires advanced technique and experience, and this brazing procedure can only be performed by the workers who completed “Gas Welding Skill Training” regulated by the Occupational Safety and Health Act, and went through the training programs of refrigerant operations.
  • Page 62 2. Cylinder without adjustment valve side gauge pressure is adjusted by the adjuster. Check the both side valves of the torch and open the cylinder valve to check the remaining refrigerant in the cylinder. Caution: Do not attach oil component on the connection port of the adjuster. Especially, use an oxygen cylinder adjuster which is no oil substance type.
  • Page 63 13.7.5 Types of flame Types of flame change based on the proportion of propane and oxygen. [Neutral Flame] Perform brazing with this flame (This is a flame when oxygen and propane are mixed at proper proportion, and has lesser effect on the brazed metals) White core flame 10 ~ 15 mm...
  • Page 64 13.7.7 Selection of brazing material Use BAg brazing material (silver solder) to increase the welding performance. Tensile strength Composition of ingredients (%) Temperature (°C) Characteristics (Reference) Category Standard Brazing Base Number Solidus Liquidus Kgf•cm applications temp material Liquidity is good at low temperature, 49.0 14.5...
  • Page 65 13.7.10 Checking of brazing (insert) points 1. No impurity on the brazing point Gap 0.025 ~ 0.05 mm If dirt or oil is attached on the brazing point, the brazing filler metal does not reach to junction, and Inner diameter ø6.45 it may cause poor welding.
  • Page 66 (Reference) Melting temperature of copper • • • • • • • Approx. 1083°C Maximum temperature obtained in propane and oxygen • • • • • • • Approx. 1083°C The important point is to heat the bonding part uniformly within a short period of time until reaching to the brazing temperature in the following manner.

  • Page 67: Reference> Analysis Method For No Error Code, No Cooling / No Warming

    13.8 <Reference> Analysis method for no error code, no cooling / no warming 13.8.1 Preparation for appropriate diagnosis In order to obtain appropriate operation characteristics, minimum 15 minutes or more operation time [testing operation (rated operation)] is required. 1. Method of rated operation (rated operation) For the models which have two buttons of “emergency operation and forced cooling operation”, press forced cooling button once.
  • Page 68 1. Measuring temperature 1) Indoor unit suction temperature, release temperature, temperature difference, → Measure by thermometer 2) 2-way valve pipe temperature in cooling mode is low temperature (benchmark：5 ~ 10°C), in heating mode is medium temperature (benchmark：25 ~ 35°C). 3) 3-way valve pipe temperature in cooling mode is low temperature (benchmark：7 ~ 15°C) in heating mode is high temperature (benchmark：38 ~ 50°C).

  • Page 69: Operation Control

    14. Operation Control 14.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.

  • Page 70: Indoor Fan Motor Operation

    14.1.5 Automatic Operation  This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature.  During operation mode judgment, indoor fan motor (with speed of Lo-) is running for 30 seconds to detect the indoor intake air temperature.
  • Page 71 ii Auto Fan Speed [Cooling, Dry]  According to room temperature and setting temperature, indoor fan speed is determined automatically.  When set temperature is not achieved, the indoor fan will operate according to pattern below. [1 pattern : 10 s] Speed Higher Medium...

  • Page 72: Outdoor Fan Motor Operation

    14.3 Outdoor Fan Motor Operation  It starts when compressor starts operation and it stops 30 seconds after compressor stops operation. Compressor: Fan Speed Outdoor Fan: 30 sec  During cooling operation, and outdoor ambient temperature is below 8°C, outdoor fan speed will be controlled according to outdoor piping temperature as following: OD Pipe Temp.

  • Page 73: Airflow Direction

    14.4 Airflow Direction  There are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes).  Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air temperature) and manual (angles of direction can be adjusted using remote control).
  • Page 74 Side View (Inner Vane) Reference point 128º (NZ25/35VKE & QZ25VKE) 148º (NZ50VKE) Step 1 Stopper Step 2 Step 3 Closed Position Step 4 Step 5 Side View (Outer Vane) Closed Stopper Position 156º (NZ25/35VKE & QZ25VKE) 101º (NZ50VKE) Reference point Step 1 Step 2 Step 3...

  • Page 75: Quiet Operation (Cooling Mode/Cooling Area Of Dry Mode)

    14.5 Quiet Operation (Cooling Mode/Cooling Area of Dry Mode)  Purpose To provide quiet cooling operation compare to normal operation.  Control condition Quiet operation start condition  When “POWERFUL/QUIET” button at remote control is pressed twice. QUIET will be shown on remote control display. Quiet operation stop condition ...

  • Page 76: Timer Control

    14.8 Timer Control  There are 2 sets of ON and OFF timer available to turn the unit ON or OFF at different preset time.  If more than one timer had been set, the upcoming timer will be displayed and will activate in sequence. 14.8.1 ON Timer Control ...

  • Page 77: Wireless Lan Control

    However, there is no guarantee that the APP will work well with all Android OS version.  The Network Adaptor is designed specifically as a terminal for Panasonic Comfort Cloud app.  The Wireless LAN network coverage must reach the air conditioner installation location.
  • Page 78 14.11.4 To Disconnect Wireless LAN (Off Wireless LAN LED)  Press and release one time at the Remote Control Wireless LAN button and the LED will turn off. (LED ON -> LED OFF). 14.11.5 To Delete Wireless LAN Information  If Wireless LAN is off (LED is Off), turn on Wireless LAN first by press and release one time the Wireless LAN button.
  • Page 79 14.11.8 Between ID AC and Broadband Router Failure Detect Condition  Detect condition: Communication with router is interrupted.  Confirm condition: The interrupted condition continue more than 5 minutes and retry is implemented.  After confirm the failure operation: Not H85 error display and Wireless LAN LED is blinking. ...

  • Page 80: 8/15°C Heat Operation

    14.12 +8/15°C Heat Operation  +8/15°C Heat operation provides heating at low setting temperature in unoccupied houses during winter for the purpose of protecting equipments or housing appliances which may be destroyed by the extreme cold weather.  This operation can be ON by pressing the +8/15°C heat button on the remote control. ...

  • Page 81: Protection Control

    15. Protection Control 15.1 Protection Control for All Operations 15.1.1 Restart Control (Time Delay Safety Control)  The Compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this period. ...
  • Page 82 Compressor = OFF 103°C 88°C Compressor Frequency Reduce 99°C 87°C Compressor Frequency Limited 96°C 86°C Free Comp. temperature 15.1.5 Low Pressure Prevention Control (Gas Leakage Detection)  Control start conditions For 5 minutes, the compressor continuously operates and outdoor total current is between 0.75A and 0.95A, 1.38A.

  • Page 83: Protection Control For Cooling & Soft Dry Operation

    15.2 Protection Control for Cooling & Soft Dry Operation 15.2.1 Outdoor Air Temperature Control  The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the diagram below.  This control will begin 1 minute after the compressor starts. ...
  • Page 84 15.2.5 Dew Prevention Control 1  To prevent dew formation at indoor unit discharge area.  This control will be activated if: Outdoor air temperature and Indoor pipe temperature judgment by microcontroller is fulfilled. When Cooling or Dry mode is operated more than 20 minutes or more. ...

  • Page 85: Protection Control For Heating Operation

    15.3 Protection Control for Heating Operation 15.3.1 Intake Air Temperature Control Compressor will operate at limited freq., if indoor intake air temperature is 30°C or above. 15.3.2 Outdoor Air Temperature Control  The Max current value is regulated when the outdoor air temperature rise above 14°C in order to avoid compressor overloading.

  • Page 86: Servicing Mode

    16. Servicing Mode 16.1 Auto OFF/ON Button 16.1.1 Mode setting by Emergency SW Emergency SW is Emergency SW is Emergency SW is Emergency SW is pressed pressed pressed pressed Forced Normal Forced Emergency Operation Cooling Cooling Heating Operation time check Operation Operation Operation...

  • Page 87: Heat Only Operation

    REMOTE CONTROL NUMBER SWITCH MODE The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed continuously for more than 11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote Control Number Switch Mode is in standby condition) and press “AC RESET” button and then press any button at remote control to transmit and store the desired transmission code to the EEPROM.

  • Page 88: Remote Control Button

    16.2.2 Operation mode during Heating Only Operation  The table below shows the operation mode comparison when Heating Only Operation Mode Activated and Deactivated. Operation Heating Only Operation Mode Activated Heating Only Operation Mode Deactivated Mode After 30s sampling, the unit will judge the operation After 30s sampling, regardless of the indoor intake or mode base on remote controller temperature setting and AUTO...
  • Page 89  Auto restart enable/disable selection Normal display mode Press SW to enter customer zone & press SW’s to choose function 10 Control Disable Transmit “Enable or Disable” code Control Enable 1 Press SW, special setting is immediately cancelled and normal mode starts. 2 If no SW is pressed for 30secs, then special setting mode is cancelled and normal mode starts.
  • Page 90  New Deice Judgement Selection Normal display mode Press SW (t 0secs) When SW pressed continuously for t 5secs to enter service zone & press SW’s to choose function 60 Switching = No Transmit “No or Yes” code Switching = Yes Note: By default is New Deice Judgement.
  • Page 91 16.3.6 Customization mode LCD display area: Customization display area (highlighted in color) Function Options (If any) Cannot enter this customization mode under the following conditions: 1 Operation ON. 2 Under [Real/ON/OFF] time setting mode. To enter Customer zone: Normal display Customer Zone mode [range (1~49)]...
  • Page 92 Customization list table: Note: The functions described in the table may not be applicable to the model and may subject to change without further notice. Customization Options Remark Name Remote control number selection A, B, C, D Solar radiation sensitivity level adjustment 1, 2, 3, 4, 5 [iAUTO-X/iAUTO/iCOMF, Cool &...

  • Page 93: Troubleshooting Guide

    17. Troubleshooting Guide 17.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no Normal Pressure and Outlet Air Temperature (Standard) electrical problems before inspecting the refrigeration cycle. Gas Pressure Outlet air Temperature Such problems include insufficient insulation, problem with the (kg/cm (°C) power source, malfunction of a compressor and a fan.
  • Page 94 17.1.1 Relationship Between the Condition of the Air Conditioner and Pressure and Electric Current Cooling Mode Heating Mode Condition of the Electric current Electric current air conditioner Low Pressure High Pressure Low Pressure High Pressure during operation during operation Insufficient refrigerant ...

  • Page 95: Breakdown Self Diagnosis Function

    17.2 Breakdown Self Diagnosis Function 17.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code)  Every press of the button (up or down) will Once abnormality has occurred during operation, increase abnormality numbers and transmit the unit will stop its operation, and Timer LED abnormality code signal to the main unit.

  • Page 96: Error Codes Table

    17.3 Error Codes Table Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation No memory of failure — Normal operation — — Indoor fan only  Indoor/outdoor wire terminal Indoor/outdoor operation can Indoor/outdoor After operation for ...
  • Page 97 Diagnosis Abnormality / Abnormality Protection Problem Check location display Protection control Judgment Operation  Check indoor/outdoor Wrong wiring and connection wire and connection Abnormal wiring or — — connecting pipe, expansion pipe piping connection valve abnormality  Expansion valve and lead wire and connector ...

  • Page 98: Self-Diagnosis Method

    17.4 Self-diagnosis Method 17.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions  During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused  Faulty indoor unit PCB.
  • Page 99 17.4.2 H12 (Indoor/Outdoor Capacity Rank Mismatched) Malfunction Decision Conditions  During startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted. ...
  • Page 100 17.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 101 17.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.  Faulty sensor.
  • Page 102 17.4.5 H16 (Outdoor Current Transformer) Malfunction Decision Conditions  An input current, detected by Current Transformer CT, is below threshold value when the compressor is operating at certain frequency value for 3 minutes. Malfunction Caused  Lack of gas  Broken CT (current transformer) ...
  • Page 103 17.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550 rpm or < 50 rpm) Malfunction Caused ...
  • Page 104 17.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 105 17.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 106 17.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 107 17.4.10 H30 (Compressor Discharge Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 108 17.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection.
  • Page 109 17.4.12 H33 (Unspecified Voltage between Indoor and Outdoor) Malfunction Decision Conditions  The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit and outdoor unit PCBs used.  Indoor unit or outdoor unit PCB defective.
  • Page 110 17.4.13 H34 (Outdoor Heat Sink Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 111 17.4.14 H36 (Outdoor Gas Pipe Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 112 17.4.15 H37 (Outdoor Liquid Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connection. ...
  • Page 113 17.4.16 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor. Malfunction Caused  Operation stops due to short circuit inside the fan motor winding. ...
  • Page 114 17.4.17 H98 (Error Code Stored in Memory and no alarm is triggered / no TIMER LED flashing) Malfunction Decision Conditions  Indoor high pressure is detected when indoor heat exchanger is detecting very high temperature when the unit is operating in heating operation. ...
  • Page 115 17.4.18 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions  Freeze prevention control takes place (when indoor pipe temperature is lower than 2°C) Malfunction Caused ...
  • Page 116 17.4.19 F11 (4-way Valve Switching Failure) Malfunction Decision Conditions  When indoor heat exchanger is cold during heating (except deice) or when indoor heat exchanger is hot during cooling and compressor operating, the 4-way valve is detected as malfunction. Malfunction Caused ...
  • Page 117 17.4.20 F17 (Indoor Standby Units Freezing Abnormality) Malfunction Decision Conditions  When the different between indoor intake air temperature and indoor pipe temperature is above 10°C or indoor pipe temperature is below -1.0°C. Remark: When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor unit and H39 to other indoor unit(s).
  • Page 118 17.4.21 F90 (Power Factor Correction Protection) Malfunction Decision Conditions  To maintain DC voltage level supply to power transistor.  To detect high DC voltage level after rectification. Malfunction Caused  During startup and operation of cooling and heating, when Power Factor Correction (PFC) protection circuitry at the outdoor unit main PCB senses abnormal DC voltage level for power transistors.
  • Page 119 17.4.22 F91 (Refrigeration Cycle Abnormality) Malfunction Decision Conditions  The input current is low while the compressor is running at higher than the setting frequency. Malfunction Caused  Lack of gas.  3-way valve close. Troubleshooting...
  • Page 120 17.4.23 F93 (Compressor Rotation Failure) Malfunction Decision Conditions  A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused  Compressor terminal disconnect  Faulty Outdoor PCB  Faulty compressor Troubleshooting...
  • Page 121 17.4.24 F95 (Outdoor High Pressure Protection: Cooling or Soft Dry) Malfunction Decision Conditions  During operation of cooling or soft dry, when outdoor unit heat exchanger high temperature data is detected by the outdoor unit heat exchanger thermistor. Malfunction Caused ...
  • Page 122 17.4.25 F96 (IPM Overheating) Malfunction Decision Conditions  During operating of cooling and heating, when IPM temperature data (100°C) is detected by the IPM temperature sensor. Multi Models only Compressor Overheating: During operation of cooling and heating, when the compressor OL is activated. Heat Sink Overheating: During operation of cooling and heating, when heat sink temperature data (90°C) is detected by the heat sink temperature sensor.
  • Page 123 17.4.26 F97 (Compressor Overheating) Malfunction Decision Conditions  During operation of cooling and heating, when compressor tank temperature data (112°C) is detected by the compressor tank temperature sensor. Malfunction Caused  Faulty compressor tank temperature sensor  2/3 way valve closed ...
  • Page 124 17.4.27 F98 (Input Over Current Detection) Malfunction Decision Conditions  During operation of cooling and heating, when an input over-current (X value in Total Running Current Control) is detected by checking the input current value being detected by current transformer (CT) with the compressor running.
  • Page 125 17.4.28 F99 (DC Peak Detection) Malfunction Decision Conditions During startup and operation of cooling and heating, when inverter DC peak data is received by the outdoor internal DC Peak sensing circuitry. Malfunction Caused  DC current peak due to compressor failure. ...

  • Page 126: Disassembly And Assembly Instructions

    High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 18.1 CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE 18.1.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 18.1.1.1...
  • Page 127 18.1.1.3 To Remove Electronic Controller 3 Hooks (Top, left and right hand side) Remove control board cover by releasing 3 hooks. Figure 2 Remove earth wires. Pull out the 10. Detach all connectors as labelled from the electronic electronic controller. Then pull out the controller halfway.
  • Page 128 18.1.1.4 To Remove Discharge Grille Remove the screw and pull out the WIFI module. Figure 6 12. Pull out and remove the drain hose from the discharge grille. 13. Then pull the discharge grille downward gently to dismantle it. Figure 7 18.1.1.5 To Remove Control Board 14.
  • Page 129 18.1.1.6 To Remove Cross Flow Fan and Indoor Fan Motor Figure 9 17. Remove the bearing by pulling it gently. 16. Remove the screw from the evaporator. Figure 10...
  • Page 130 Evaporator 18. Push the holdfast to the left and lift up the evaporator. 20. Fan motor can be removed after Cross flow fan the removal of the cross flow fan. Reminder: To reinstall the fan motor, adjust the fan motor connector to 90° towards you before fixing control board.
  • Page 131 18.1.1.7 To Assemble the Front Grille Receiver PCB CAUTION Do not directly fix the front grille complete, to avoid hitting the Receiver PCB. Figure 13 Gently assemble the right side of the front grille first then fix the left side. Figure 14...
  • Page 132 18.1.1.8 To Assemble the Intake Grille Hook Intake Grille Align the intake grille hooks into the slot. Hook Place in the hook to the slot. Then slightly bend the intake grille and push in the hooks into the slot. Figure 15...

  • Page 133: Cs-Nz50Vke

    WARNING High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 18.2 CS-NZ50VKE 18.2.1 Indoor Electronic Controllers, Cross Flow Fan and Indoor Fan Motor Removal Procedures 18.2.1.1 To Remove Front Grille...
  • Page 134 18.2.1.3 To Remove Electronic Controller Figure 2 Remove earth wires. Pull out the 10. Detach all connectors as labelled from the electronic electronic controller. Then pull out the controller halfway. electronic controller gently. AC303 CN-FM Detach lead wires AC306 (Black) and AC304 (Red) from the terminal CN-CNT...
  • Page 135 18.2.1.4 To Remove Discharge Grille Remove the screw and pull out the WIFI module. Figure 6 12. Pull out and remove the drain hose from the discharge grille. 13. Then pull the discharge grille downward gently to dismantle it. Figure 7 18.2.1.5 To Remove Control Board Figure 8...
  • Page 136 18.2.1.6 To Remove Cross Flow Fan and Indoor Fan Motor Figure 9 Figure 10...
  • Page 137 Figure 11 Figure 12...
  • Page 138 18.2.1.7 To Assemble the Front Grille Figure 13 Figure 14...
  • Page 139 18.2.1.8 To Assemble the Intake Grille Figure 15...

  • Page 140: To Replace Wireless Lan Module (Network Adapter)

    Unclip & pull down Remove the top casing by pressing the side of the network adapter box. Press Press After that, network adapter can be easily replaced. Reminder: Serviceman or owner must setting again Panasonic Comfort Cloud app after replace Wireless LAN Module.

  • Page 141: Panasonic Comfort Cloud' App Setting Procedure [After Replace Main Printed Circuit Board Or Change The Indoor Unit]

    18.4 ‘Panasonic Comfort Cloud’ App Setting Procedure [After Replace Main Printed Circuit Board or Change the Indoor Unit] 18.4.1 Initial Setup (Method 1) My house My house Menu Home My House Living room Living room Owner 30.0 C 16.May 15:50 16.May 15:50...
  • Page 142 Setting Connection Network Connection Guide Connection Guide Connection Guide Step 1 Step 1 Step 2 Step 2 Step 3 Step 3 Step 1 Step 2 Step 3 Step 1 Step 3 Step 2 Make sure smartphone is connected to same wireless network.
  • Page 143 Connection network using WPS mode (Method 1) Connection Guide Connection Guide Connection Guide Step 1 Step 3 Step 1 Step 2 Step 3 Step 2 Step 1 Step 2 Step 3 If Wireless LAN LED is OFF during the connec on setup, please press “Wireless LAN”...
  • Page 144 Copy password and next CANCEL CONNECT HUAWEI-E5377-F108 MF910_84AA17 Cancel (go back to previous screen) English (UK) Done 3. Copy the password for later use. Select “Panasonic-CS-wirelessAP” from smartphones Wireless LAN setting and enter the copied password. Return to “Panasonic Comfort Cloud” app.
  • Page 145 Select your wireless router Select your wireless router Select your wireless router Network name (SSID) Network name (SSID) router SSID1 Panasonic-factory-wireless-ap-00 Panasonic-factory-wireless-ap-00 Enter the password of the selected router SSID2 Security wireless router. router SSID3 WPA2...
  • Page 146  By registered the new name of air- conditioner, the function of “Panasonic Comfort Cloud” app is ready to be used. My house Device password setting Step 1...
  • Page 147 18.4.2 ‘Panasonic Comfort Cloud’ App Setting Procedure [After Replace Wireless LAN Module] 18.4.2.1 Initial Setup (Method 1) My house My house Menu Home My House Living room Living room Owner 30.0 C 16.May 15:50 16.May 15:50 User list Bedroom 1...
  • Page 148 Please choose the following: My Home Was this air-condi oner operated using this Living Room smart APP before? Newly purchased air-condi oner CS-NZ25VKE Others (Air -condi oner used before) Cancel Cancel Cancel Start 4. Select start button to proceed for 5.
  • Page 149 18.4.2.3 Setting Connection Network Connection Guide Connection Guide Connection Guide Step 1 Step 1 Step 2 Step 2 Step 3 Step 3 Step 1 Step 2 Step 3 Step 1 Step 2 Step 3 Make sure smartphone is connected to same wireless network.
  • Page 150 Press and hold “Wireless LAN” bu on for 5 secs un l easy se “ ” 1 SSID: Panasonic-CS-wirelessAP Press “up” or “down” bu on un l Advance Password: Rac8pswi se ng “2” is shown. Point remote control to air-condi oner and press “SET”...
  • Page 151 MF910_84AA17 Cancel (go back to previous screen) English (UK) Done 2. Copy the password for later use. Select “Panasonic-CS-wirelessAP” from smartphones Wireless LAN setting and enter the copied password. Return to “Panasonic Comfort Cloud” app. Connection Guide Connection Guide Connection Guide...
  • Page 152 18.4.2.6 Select the Air Conditioner and Set the Password Connection Guide Connection Guide My house Step 1 Step 3 Step Step Step Step 2 Master room *If Wireless LAN LED is OFF, please press Select the air-condi oner for registra on “Wireless LAN”...

  • Page 153: Outdoor Electronic Controller Removal Procedure

    18.5 Outdoor Electronic Controller Removal Procedure 18.5.1 CU-NZ25VKE CU-NZ35VKE CU-QZ25VKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove the Control Board as follows: Fig. 1 Remove the 8 screws of the Front Panel. Fig.
  • Page 154 18.5.2 CU-NZ50VKE Caution! When handling electronic controller, be careful of electrostatic discharge. Remove the 5 screws of the Top Panel. Remove 2 screws for the plate of Terminal Board Cover. Fig. 4 Fig. 1 Remove the Control Board. Remove the 8 screws of the Front Panel. Fig.

  • Page 155: Technical Data

    Unit setting: Standard piping length, Hi Fan, Cool mode at 16°C Voltage: 230V 19.1.1 CS-NZ25VKE/CU-NZ25VKE CS-QZ25VKE/CU-QZ25VKE Indoor (°C) Outdoor DB (°C) 2573 2547 443 2965 2744 284 2818 2501 287 2893 1967 338 2841 2352 284 2669 2237 387 2500 2123 510 2891 1943 327 3229 2104 235 3200 2092 289 3154 1716 335 3170 1780 269 2940 1695 378 2583 1554 504 15.7 2344 2249 397 1940 1902 171 2654 2576 320 2726 2039 326 2698 2285 298 2497 2202 394 2226 2096 509...

  • Page 156: Heat Mode Performance Data

    19.2 Heat Mode Performance Data Unit setting: Standard piping length, Hi Fan, Heat mode at 30°C Voltage: 230V 19.2.1 CS-NZ25VKE/CU-NZ25VKE CS-QZ25VKE/CU-QZ25VKE Indoor (°C) Outdoor WB (°C) -25/-26 -20/-21 -15/-16 -7/-8 2013 1462 2562 1572 3209 1708 3587 1649 3992 1488...

  • Page 157: Service Data

    Indoor room temperature: 27°C Dry Bulb/19°C Wet Bulb Unit setting: Standard piping length, forced cooling at 16°C, Hi fan Compressor frequency: Rated for cooling operation Piping length: 5m Voltage: 230V 20.1.1 CS-NZ25VKE CU-NZ25VKE CS-QZ25VKE CU-QZ25VKE 15.80 15.60 15.40 15.20 15.00 14.80...
  • Page 158 20.1.2 CS-NZ35VKE CU-NZ35VKE 15.00 14.50 14.00 13.50 13.00 12.50 12.00 11.50 11.00 10.50 10.00 Outdoor Air Temperature (°C) 5.00 4.50 4.00 3.50 3.00 2.50 2.00 Outdoor Air Temperature (°C) 1.05 1.00 0.95 0.90 0.85 0.80 Outdoor Air Temperature (°C)
  • Page 159 20.1.3 CS-NZ50VKE CU-NZ50VKE 17.0 16.0 15.0 14.0 13.0 Outdoor Air Temperature (°C) 8.00 7.00 6.00 5.00 4.00 3.00 Outdoor Air Temperature (°C) 1.20 1.10 1.00 0.90 Outdoor Air Temperature (°C)

  • Page 160: Heat Mode Outdoor Air Temperature Characteristic

    Indoor room temperature: 20°C Dry Bulb/ -°C Wet Bulb Unit setting: Standard piping length, forced heating at 30°C, Hi fan Compressor frequency: Rated for Heating operation Piping length: 5m Voltage: 230V 20.2.1 CS-NZ25VKE CU-NZ25VKE CS-QZ25VKE CU-QZ25VKE Outdoor Air Temperature (°C) 3.70 3.20 2.70 2.20 1.70...
  • Page 161 20.2.2 CS-NZ35VKE CU-NZ35VKE Outdoor Air Temperature (°C) 4.50 4.00 3.50 3.00 2.50 2.00 1.50 Outdoor Air Temperature (°C) Outdoor Air Temperature (°C)
  • Page 162 20.2.3 CS-NZ50VKE CU-NZ50VKE 50.00 45.00 40.00 35.00 30.00 25.00 20.00 15.00 -30-28-26-24-22-20-18-16-14-12-10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 Outdoor Air Temperature (°C) 9.00 8.00 7.00 6.00 5.00 4.00 3.00 -30-28-26-24-22-20-18-16-14-12-10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 Outdoor Air Temperature (°C) 4.00...

  • Page 163: Piping Length Correction Factor

    20.3 Piping Length Correction Factor The characteristic of the unit has to be corrected in accordance with the piping length. 20.3.1 CS-NZ25VKE CU-NZ25VKE CS-NZ35VKE CU-NZ35VKE CS-QZ25VKE CU-QZ25VKE 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 0.94 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Pipe Length (m) 1.10...
  • Page 164 20.3.2 CS-NZ50VKE CU-NZ50VKE 1.03 1.01 0.99 0.97 0.95 9 10 11 12 13 14 15 16 17 18 19 20 21 Pipe Length (m) 1.010 1.005 1.000 0.995 0.990 0.985 0.980 0.975 0.970 0.965 0.960 9 10 11 12 13 14 15 16 17 18 19 20 21 Pipe Length (m) Note: The graphs show the factor after added right amount of additional refrigerant.

  • Page 165: Exploded View And Replacement Parts List

    21. Exploded View and Replacement Parts List 21.1 Indoor Unit 21.1.1 CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE CWH55025J CWH55051J Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 166 REF. SAFETY PART NAME & DESCRIPTION QTY. CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE REMARK CHASSIS COMPLETE ACXD50C00200 ← ← FAN MOTOR ARW7628ACCB ← ← CROSS-FLOW FAN COMPLETE CWH02C1076 ← ← BEARING ASSY CWH64K1006 ← ← SCREW - CROSS-FLOW FAN CWH551146 ← ← PARTICULAR PIECE CWD933067B ←...
  • Page 167 REF. SAFETY PART NAME & DESCRIPTION QTY. CS-NZ25VKE CS-NZ35VKE CS-QZ25VKE REMARK INSTALLATION INSTRUCTION ACXF60-36930 ← ← INSTALLATION INSTRUCTION ACXF60-36940 ← ← CWG861497 ← ← SHOCK ABSORBER (L) ACXG70-00380 ← ← SHOCK ABSORBER (R) ACXG70-00390 ← ← C. C. CASE ACXG50-48620 ←...
  • Page 168 21.1.2 CS-NZ50VKE CWH55025J CWH55051J Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 169 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-NZ50VKE REMARK CHASSIS COMPLETE ACXD50C01591 FAN MOTOR L6CBYYYL0219 CROSS-FLOW FAN COMPLETE CWH02C1136 BEARING ASSY CWH64K1010 SCREW - CROSS-FLOW FAN CWH551146 PARTICULAR PIECE CWD933067B EVAPORATOR ACXB30C03600 FLARE NUT (LIQUID) CWT251030 FLARE NUT (GAS) CWT251032 CONTROL BOARD CASING ACXH10-00720...
  • Page 170 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-NZ50VKE REMARK SHOCK ABSORBER (L) ACXG70-00850 SHOCK ABSORBER (R) ACXG70-00840 C. C. CASE ACXG50-48640 MODEL LABEL ACXF85-21310 (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488).  “O” marked parts are recommended to be kept in stock.

  • Page 171: Outdoor Unit

    21.2 Outdoor Unit 21.2.1 CU-NZ25VKE CU-NZ35VKE CU-QZ25VKE Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 172 CWB11094 ← ← EXPANSION VALVE ACXB05-00400 ← ← HEATER CWA341072 ← ← V-COIL COMPLETE - EXP. VALVE ACXA43C01520 ← ← PANASONIC BADGE CWE373439 ← ← NORDIC HEATPUMP BADGE CWE373985 ← ← SOUND PROOF MATERIAL CWG302745 ← ← ACXG86-03760 ← ←...
  • Page 173 REF. SAFETY PART NAME & DESCRIPTION QTY. CU-NZ25VKE CU-NZ35VKE CU-QZ25VKE REMARK BASE - BOARD COMPLETE CWG62C1162 ← ← SHOCK ABSORBER (L) CWG713416 ← ← SHOCK ABSORBER (R) CWG713415 ← ← C. C. CASE ACXG50-48900 ← ← INDICATION LABEL CWF746074 ← ←...
  • Page 174 21.2.2 CU-NZ50VKE Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 175 CABINET SIDE PLATE CO. ACXE04C04740 CABINET FRONT PLATE CO. ACXE06K00080 CABINET TOP PLATE ACXE03-00200 CONTROL BOARD COVER - COMPLETE ACXH13C00170 CONTROL BOARD COVER CWH131470 PANASONIC BADGE CWE373439 SOUND PROOF MATERIAL CWG302636 SOUND PROOF MATERIAL CWG302630 RECEIVER CWB14011 SOUND PROOF MATERIAL ACXG30-07630...
  • Page 176 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CU-NZ50VKE REMARK SHOCK ABSORBER (L) CWG713217 SHOCK ABSORBER (R) CWG713218 C. C. CASE ACXG50-52140 INDICATION LABEL CWF746074 MODEL LABEL ACXF85-20740 (NOTE)  All parts are supplied from PAPAMY, Malaysia (Vendor Code: 00029488). ...

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