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(WH-SDC14C6E5-1) (WH-UD14CE5-A-1) (WH-SDC16C6E5-1) (WH-UD16CE5-A-1) WARNING 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.
13.11 Base Pan Heater Control (Optional) ... 86 (WH-SDC14C6E5-1 WH-UD14CE5-A-1) ...15 13.12 Three Way Valve Control......86 WH-SDC16C6E5 WH-UD16CE5-A 13.13 Sterillization Mode........87 (WH-SDC16C6E5-1 WH-UD16CE5-A-1) ...18 13.14 Quiet Operation........... 87 13.15 Anti Freeze Control ........87 3. Features.............21 13.16 Solar Operation (Optional)......88 4.
1. Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating and main circuit for the model installed. ...
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WARNING 19. The unit is only for use in a closed portable water system. Utilization in an open water circuit or non-portable water circuit, may lead to excessive corrosion of the water piping and risk of incubating bacteria colonies, particularly Legionella, in water. 20.
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Item Unit Power Source (Phase, Voltage, Cycle) ø Single Input Power Condition A35W7 A7W35 A2W35 (Ambient/Water) Cooling: 2.30 Heating: 1.59 Heating: 1.98 Maximum Input Power For Heatpump System 4.59 Maximum Input Power For Internal Heater 3.00 (6.00) (Internal Heater + Tank Heater) Starting Current 7.30 Running Current...
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Note: Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet temperature of 12°C and water outlet temperature of 7°C. Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
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Item Unit Power Source (Phase, Voltage, Cycle) ø Single Input Power Condition A35W7 A7W35 A2W35 (Ambient/Water) Cooling: 2.90 Heating: 2.20 Heating: 2.16 Maximum Input Power For Heatpump System 5.01 Maximum Input Power For Internal Heater 3.00 (6.00) (Internal Heater + Tank Heater) Starting Current 10.10 Running Current...
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Note: Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet temperature of 12°C and water outlet temperature of 7°C. Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
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Item Unit Power Source (Phase, Voltage, Cycle) ø Single Input Power Condition A35W7 A7W35 A2W35 (Ambient/Water) Cooling: 3.60 Heating: 2.57 Heating: 3.35 Maximum Input Power For Heatpump System 5.30 Maximum Input Power For Internal Heater 6.00 (9.00) (Internal Heater + Tank Heater) Starting Current 11.7 Running Current...
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Note: Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet temperature of 12°C and water outlet temperature of 7°C. Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
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Item Unit Power Source (Phase, Voltage, Cycle) ø Single Input Power Condition A35W7 A7W35 A2W35 (Ambient/Water) Cooling: 4.40 Heating: 3.11 Heating: 3.73 Maximum Input Power For Heatpump System 5.52 Maximum Input Power For Internal Heater 6.00 (9.00) (Internal Heater + Tank Heater) Starting Current 14.1 Running Current...
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Note: Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet temperature of 12°C and water outlet temperature of 7°C. Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
WH-SDC16C6E5 WH-UD16CE5-A (WH-SDC16C6E5-1 WH-UD16CE5-A-1) Item Unit Outdoor Unit Performance Test Condition EN 14511 Cooling Capacity Condition A35W7 (Ambient/Water) 12.20 BTU/h 41600 kcal/h 10490 Cooling EER 2.54 kcal/hW 2.19 Heating Capacity Condition A7W35 A2W35 (Ambient/Water) 16.00 13.00 BTU/h 54600 44300 kcal/h...
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Item Unit Power Source (Phase, Voltage, Cycle) ø Single Input Power Condition A35W7 A7W35 A2W35 (Ambient/Water) Cooling: 4.80 Heating: 3.78 Heating: 4.00 Maximum Input Power For Heatpump System 5.74 Maximum Input Power For Internal Heater 6.00 (9.00) (Internal Heater + Tank Heater) Starting Current 17.1 Running Current...
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Note: Cooling capacities are based on outdoor air temperature of 35°C Dry Bulb with controlled indoor water inlet temperature of 12°C and water outlet temperature of 7°C. Heating capacities are based on outdoor air temperature of 7°C Dry Bulb (44.6°F Dry Bulb), 6°C Wet Bulb (42.8°F Wet Bulb) with controlled indoor water inlet temperature of 30°C and water outlet temperature of 35°C.
3. Features Inverter Technology - Energy saving High Efficiency Compact Design Environment Protection - Non-ozone depletion substances refrigerant (R410A) Long Installation Piping - Long piping up to 30 meter with height difference 20 meter (UD07CE, UD09CE) - Long piping up to 40 meter with height difference 30 meter (UD12CE, UD14CE and UD16CE) - Flexible 4-way piping for outdoor unit ...
6. Refrigeration and Water Cycle Diagram Piping size Min. Max. Rated Common Additional Piping Piping Model Length Length Elevation Refrigerant Liquid Length Length (g/m) UD07CE5-A 5/8” 1/4” UD09CE5-A 5/8” 1/4” UD12CE5-A 5/8” 3/8” UD14CE5-A 5/8” 3/8” UD16CE5-A 5/8” 3/8” * If piping length is over common length, additional refrigerant should be added as shown in the table.
11. Installation Instruction WH-UD07CE5-A WH-UD09CE5-A (WH-UD07CE5-A-1 WH-UD09CE5-A-1) 11.1 Select the Best Location Indoor Unit Rated Min. Max. Addi- Piping size There should not be any heat source or steam Length Eleva- Piping Piping tional tion Length Length Refrige- near the unit. Model rant Gas Liquid...
11.3 Indoor Unit 11.3.3 Indoor Unit Installation 11.3.1 How to Fix Installation Plate The mounting wall is strong and solid enough to prevent 11.3.3.1 Install the Indoor Unit it from vibration. When connecting solar pump station cable between indoor unit and solar pump station, the distance between both apparatuses shall be 2 ~ 8 meters and the length of the said cable must be shorter than 10 meter.
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11.3.3.3 Indoor Unit Refrigerant Pipe An external filter (30 mesh or more, field supplied) must be installed before the water inlet of the indoor Installation unit (with “WATER IN” indication). Please make flare after inserting flare nut Refer to Diagram 4.1 for pipe connection of (located at joint portion of tube assembly) onto Radiator, Floor Heater, Tank Unit, Solar Pump the copper pipe.
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11.3.3.5 Drain Elbow and Hose Installation Fix the drain elbow 2 and packing 9 to the bottom of indoor unit, like show in illustration. Use inner diameter 17 mm drain hose in the market. This hose must to be installed in a continuously downward direction and in a frost-free environment.
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External Controller shall be connected to 1-pole switch with min 3.0mm contact gap. (connection refer to Diagram 5.2). Its cable must be (2 x min 0.5 mm ), double insulation layer of PVC-sheathed or rubber- sheathed cable. * note: - When making such connection, kindly remove the jumper between terminal no. 17 and 18. - Switch used shall be CE compliance component.
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11.3.4.2 Wire Stripping and Connecting Requirement...
11.4 Outdoor Unit 11.4.1 Install the Outdoor Unit After selecting the best location, start installation according 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.
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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.
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11.4.4 Connect the Cable to the Outdoor Unit (FOR DETAIL REFER TO WIRING DIAGRAM AT INDOOR UNIT) Remove the control board cover from the unit by loosening the screw. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x (4.0 or 6.0 mm ) flexible cable, type designation 60245 IEC 57 or heavier cable.
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11.4.7 Disposal of Outdoor Unit Drain Water When a Drain elbow 2 is used, please ensure to follow below: - the unit should be placed on a stand which is taller than 50 mm. - cover the 8 holes (ø20 mm) with Rubber cap 0 (refer to illustration below) - use a tray (field supply) when necessary to dispose the outdoor unit drain water.
12. Installation Instruction WH-UD12CE5-A WH-UD14CE5-A WH-UD16CE5-A (WH-UD12CE5-A-1 WH-UD14CE5-A-1 WH-UD16CE5-A-1) 12.1 Select the Best Location Indoor Unit Rated Min. Max. Addi- Piping size There should not be any heat source or steam Length Eleva- Piping Piping tional tion Length Length Refrige- near the unit.
12.3 Indoor Unit 12.3.3 Indoor Unit Installation 12.3.1 How to Fix Installation Plate The mounting wall is strong and solid enough to prevent 12.3.3.1 Install the Indoor Unit it from vibration. When connecting solar pump station cable between indoor unit and solar pump station, the distance between both apparatuses shall be 2 ~ 8 meters and the length of the said cable must be shorter than 10 meter.
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12.3.3.3 Indoor Unit Refrigerant Pipe An external filter (30 mesh or more, field supplied) must be installed before the water inlet of the indoor Installation unit (with “WATER IN” indication). Please make flare after inserting flare nut Refer to Diagram 4.1 for pipe connection of (located at joint portion of tube assembly) onto Radiator, Floor Heater, Tank Unit, Solar Pump the copper pipe.
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12.3.3.5 Drain Elbow and Hose Installation Fix the drain elbow 2 and packing 9 to the bottom of indoor unit, like show in illustration. Use inner diameter 17 mm drain hose in the market. This hose must to be installed in a continuously downward direction and in a frost-free environment.
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External Controller shall be connected to 1-pole switch with min 3.0 mm contact gap. (connection refer to Diagram 5.2). Its cable must be (2 x min 0.5 mm ), double insulation layer of PVC-sheathed or rubber- sheathed cable. * note: - When making such connection, kindly remove the jumper between terminal no. 17 and 18. - Switch used shall be CE compliance component.
12.4 Outdoor Unit 12.4.1 Install the Outdoor Unit After selecting the best location, start installation according 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.
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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.
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12.4.4 Connect the Cable to the Outdoor Unit (FOR DETAIL REFER TO WIRING DIAGRAM AT INDOORUNIT) Remove the control board cover from the unit by loosening the screw. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x (4.0 or 6.0 mm ) flexible cord, type designation 60245 IEC 57 or heavier cord.
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12.4.7 Disposal of Outdoor Unit Drain Water When a Drain elbow 2 is used, please ensure to follow below: - the unit should be placed on a stand which is taller than 50 mm. - cover the 8 holes (ø20 mm) with Rubber cap 0 (refer to illustration below) - use a tray (field supply) when necessary to dispose the outdoor unit drain water.
13. Operation and Control 13.1 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.
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13.1.4 Cool Mode Operation 3 ways valve control: 3 ways valve switch and fix to room side. Heatpump operate follow normal cooling operation. Backup heater DOES NOT operate during cool mode. Solar 3 way valve operates follow solar operation specification. 2 ways valve control: 2 ways valve is closed.
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13.1.5 Cool + Tank Mode Operation 13.1.6 Tank Mode Operation Control contents: 3 ways valve direction - 3 ways valve switch and fix to tank side. Heat pump Thermostat characteristic - Water set temperature = Tank set temperature or [50°C] whichever lower. - Heat pump Water Outlet set temperature is set to Maximum (53°C) at tank mode.
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iii. Case 3 - Heat pump THERMO OFF TEMP: Water inlet temperature > 55°C for continuous 60 secs, heat pump OFF. - Heat pump THERMO ON TEMP: Heat pump THERMO ON TEMP = Water inlet temperature < 55°C. Booster heater control - Booster heater turn On and Off follow normal operation.
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13.1.7 Heat + Tank Mode Operation Setting 1: When Heating priority is set by control panel: 3 ways valve control: 3 ways valve switch to room side during External Room Thermo ON OR Solar 3 ways valve ON OR Tank Thermo OFF time, and switch to tank side at External Room Thermo OFF AND Solar 3 ways valve Heat pump operation control:- During External Room Thermo ON time: (When room thermo ON, heat pump must operate to room side)
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Switch back 3 ways valve to room side, Heat pump and water pump turn OFF, IF External Room Thermo ON back OR Under Solar Priority Set condition: Tank temperature > Tank THERMO OFF TEMP. for continuous 3 minutes OR Solar Valve ...
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Solar 3 way valve: Solar 3 way valve operates follow solar operation specification. * Under solar priority is set condition, when solar 3WV turn ON, booster heater will turn OFF and 3 ways valve switch to room side. * Under solar priority is not set condition, solar 3WV will OFF when heat pump operate to tank side. 2 way valve opens.
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Setting 2: When heating priority is not set by control panel: When Solar Priority is set/not set by control panel: 3 ways valve control: 3 ways valve switch to room side during heating heat-up interval, and switch to tank side during tank heat-up interval.
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- Tank interval will end and start heating interval timer, IF * When this condition happen at tank side before case 1 thermo-off. 3WV switch to room side compulsory and continue until complete room interval. Tank interval timer finish AND External Room Thermo ON OR Fulfill above Case 1 of thermo off condition.
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13.1.8 Setting Water Outlet Temperature for Heat Mode The set temperature define the parameters for the outdoor ambient temperature dependent operation of the unit. Where by the internal water setting temperature is determined automatically depending on the outdoor temperature. The colder outdoor temperatures will result in warmer water and vice versa. The user has the possibility to shift up or down the target water temperature by control panel setting.
13.1.10 Outdoor Fan Motor Operation Outdoor fan motor is adjusted according to operation condition. It starts when compressor starts operation and it stops 30 seconds after compressor stops operation. 13.2 Water Pump 13.2.1 Water Pump Control Once the indoor unit is ON, the water pump will be ON immediately and no error judgement for 9 minutes. However, during this 9 minutes operation, if there is any abnormality cause at outdoor or malfunction, the compressor should be OFF immediately and restart delay after 3 minutes.
13.2.2 Water Pump Only Operation Water pump only circulation can be set from the control panel SERVICE S/W when the operation is in Standby Mode. Press the SERVICE S/W for continuous 5sec to enter Service Mode. In Service Mode, select Sr:02 and press SET S/W to start water pump only operation. ...
13.6 Indoor Unit Safety 13.6.1 Indoor Unit Safety Control When water pump is ON, the system will start checking flow switch status (ON/OFF). If the flow switch ON for 10 seconds, the system will check on the water inlet temperature for 10 seconds. If the water inlet temperature not exceeds 80°C, the water pump shall be continuously running with normal mode.
13.9 Indoor Back-Up Heater Control 13.9.1 Indoor Electric Heater Control Normal Heating Mode Heater On condition: a. Heater switch is ON b. After Heatpump thermo ON for [30] mins c. After water pump operate [9] mins d. Outdoor air temperature < Outdoor set temperature for heater e.
Booster heater Turn Off condition: Tank temperature > Tank set temperature + [+2°C] for continuous 15 sec When BOOSTER HEATER DELAY TIMER start count after switch from heating heat-up interval to tank heat-up interval * DELAY TIMER can be set by control panel. 13.11 Base Pan Heater Control (Optional) ...
13.13 Sterillization Mode Purpose: Boil tank temperature to customer set boiling temperature to operate sterilization. Control start condition: Tank connection set to YES by remote controlller Serilization function selection is YES Sterilization signal received from remote controller by timer. ...
Backup heater anti freeze control: Backup heater turns ON when ALL the below conditions are fulfilled: Water inlet/outlet temp. < 6°C Water pump circulation anti freeze control activated, and water pump ON for 4 minutes Backup heater turns OFF when ANY of the below conditions is fulfilled: Water inlet/outlet temp.
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Stop condition: a 3 way valve stops operating when: No power supply to unit OR There is NO operation request from solar pump station OR Tank hot water temp is above solar off upper limit temp 80°C. ...
13.17 External Room Thermostat Control (Optional) Purpose: Better room temperature control to fulfill different temperature request by external room thermostat. Recommended external room thermostat: Maker Characteristic Siemem (REV200) Touch panel Siemem (RAA20) Analog Connection of external room thermostat: Wire Connection and thermo characteristic of Siemen REV200: Setting L/L1 (H) Heat Thermo...
13.18 Two Ways Valve Control Functionality of 2 ways valve: Use to allow hot water to floor heating panel or block cold water to floor heating panel. Control contents: When indoor running in heat mode, OPEN the 2 ways valve. When indoor running in cool mode, CLOSE the 2 ways valve.
14. Protection Control 14.1 Protection Control for All Operations 14.1.1 Time Delay Safety Control The compressor will not start for three minutes after stop of operation. 14.1.2 30 Seconds Forced Operation Once the compressor starts operation, it will not stop its operation for 30 seconds. However, it can be stopped using control panel at indoor unit.
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14.1.6 Low Frequency Protection Control 1 When the compressor continuously operates at frequency lower than 25 Hz for 240 minutes, the operation frequency will change to 24 Hz for 2 minutes. 14.1.7 Low Frequency Protection Control 2 When all the below conditions comply, the minimum compressor frequency will change to lower frequency. Temperature, T, for: Heating Cooling...
14.2 Protection Control for Heating Operation 14.2.1 Outdoor Air Temperature Control The maximum current value is regulated when the outdoor air temperature rises above 14°C in order to avoid compressor overloading. 14.2.2 Deice Operation When outdoor pipe temperature and outdoor air temperature is low, deice operation start where outdoor fan motor stop.
14.3 Protection Control for Cooling Operation 14.3.1 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. ...
15. Servicing Mode 15.1 How to Take Out Front Plate Please follow the steps below for take out front plate. Before removing the front plate of indoor unit, always switch off all power supply (i.e. indoor unit power supply, heater power supply and tank unit power supply). Remove the 2 mounting screws which located at bottom of the front plate and 1 mounting screw at the front of the plate.
15.5 How to Adjust Water Flow Rate Before adjust the water flow rate, make sure that the total water volume in the installation is 30 litres minimum (07C3 & 09C3), 50 litres minimum (12C6, 14C6 & 16C6). The water flow rate can be adjusted with select the water pump speed on the water pump. The default setting is high speed (III).
16. Maintenance Guide In order to ensure optimal performance of the unit, checks and inspections on the unit and the field wiring must be carried out regularly. Before carried out any maintenance or repair work, and removing the front plate of heat exchanger unit, always switch off all power supply (i.e.
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Reset overload protector Overload protector serves the safety purpose to prevent the water over heating. When the overload protector trip at high water temperature, take below steps to reset it. a. Take out OLP cover. b. Use a test pen to push the centre button gently in order to reset the Overload protector. c.
17. Troubleshooting Guide 17.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan.
17.2 Relationship between the Condition of the Air-to-Water Heatpump Indoor and Outdoor Units and Pressure and Electric Current Heating Mode Cooling Mode Condition of the Air-to-Water Heatpump Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current indoor and during operation during operation outdoor units...
17.3 Breakdown Self Diagnosis Function 17.3.1 Self Diagnosis Function (Three Digits Alphanumeric Code) When abnormality occur during operation, the system will stop operation, and OFF/ON control panel LED will blink and error code will display on the control panel Timer display LCD. ...
17.4 Error Codes Table Diagnosis display Abnormality/Protection control Abnormality judgement Primary location to verify No abnormality detected — — Indoor/Outdoor capacity unmatched 90s after power supply Indoor/outdoor connection wire Indoor/outdoor PCB Specification and combination table in catalogue ...
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Diagnosis display Abnormality/Protection control Abnormality judgement Primary location to verify Voltage at PFC PFC control 4 times occurrence within 10 minutes Outdoor heat exchanger temperature Continue for 5 sec. Outdoor heat exchanger temperature sensor abnormality sensor (defective or disconnected) Outdoor defrost sensor abnormality Continue for 5 sec.
17.5 Self-diagnosis Method 17.5.1 Connection Capability Rank Abnormality (H12) Malfunction Decision Conditions: During startup operation of cooling and heating, the capability rank of indoor checked by the outdoor is used to determine connection capability rank abnormality. Malfunction Caused: Wrong model interconnected. Wrong indoor unit or outdoor unit PCB (main) used.
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17.5.2 Compressor Tank Temperature Sensor Abnormality (H15) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the compressor tank temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
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17.5.3 Indoor Refrigerant Liquid Temperature Sensor Abnormality (H23) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor refrigerant liquid temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor.
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17.5.4 Compressor Low Pressure Protection (H42) Malfunction Decision Conditions: During operation of heating and after 5 minutes compressor ON, when outdoor pipe temperature below -29°C or above 26°C is detected by the outdoor pipe temperature sensor. Malfunction Caused: Dust accumulation on the outdoor unit heat exchanger. Air short circuit at outdoor unit.
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17.5.5 Water Flow Switch Abnormality (H62) Malfunction Decision Conditions: During operation of cooling and heating, the water flow detected by the indoor water flow switch is used to determine water flow error. Malfunction Caused: Faulty water pump. Water leak in system. Faulty connector connection.
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17.5.6 Outdoor High Pressure Abnormality (H64) Malfunction Decision Conditions: During operation of cooling and heating, when the outdoor high pressure sensor output signal is 0 Vdc or 5 Vdc. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 4 times in 20 minutes.
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17.5.7 Indoor Backup Heater OLP Abnormality (H70) Malfunction Decision Conditions: During operation of indoor backup heater, when no power supplies to indoor backup heater or OLP open circuit. Malfunction Caused: Faulty power supply connector connection. Faulty connector connection. Faulty indoor backup heater overload protector (OLP). Faulty indoor unit PCB (main).
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17.5.8 Tank Temperature Sensor Abnormality (H72) Malfunction Decision Conditions: When tank connection is set to ON, the temperatures detected by the tank temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty indoor unit PCB (main). Abnormality Judgment: Continue for 5 seconds.
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17.5.9 Indoor-Control Panel Communication Abnormality (H76) Malfunction Decision Conditions: During standby and operation of cooling and heating, indoor-control panel error occur. Malfunction Caused: Faulty connector connection. Faulty control panel. Faulty indoor unit PCB (main).
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17.5.10 Indoor/Outdoor Abnormal Communication (H90) Malfunction Decision Conditions: During 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 outdoor unit PCB (main). Faulty indoor unit PCB (main). Indoor-outdoor signal transmission error due to wrong wiring.
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17.5.11 Tank Booster Heater OLP Abnormality (H91) Malfunction Decision Conditions: During operation of tank booster heater, and tank booster heater OLP open circuit. Malfunction Caused: Faulty connector connection. Faulty tank booster heater overload protector (OLP). Faulty indoor unit PCB (main). Abnormality Judgment: Continue for 60 seconds.
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17.5.12 Unspecified Voltage between Indoor and Outdoor (H95) Malfunction Decision Conditions: The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused: Insufficient power supply. Faulty outdoor unit PCB (noise filter/main).
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17.5.13 Outdoor High Pressure Protection (H98) Malfunction Decision Conditions: During operation of heating, when pressure 4.0 MPa and above is detected by outdoor high pressure sensor. Malfunction Caused: Faulty water pump. Insufficient water flow rate in system. Water leak in system. 2/3 way closed.
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17.5.14 Indoor Freeze-up Protection (H99) Malfunction Decision Conditions: During anti-freezing control in cooling operation, when the indoor refrigerant liquid temperature < 0°C. Malfunction Caused: Faulty water pump. Insufficient water flow rate in system. Water leak in system. 2 way valve partially closed. Clogged expansion valve or strainer.
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17.5.15 Outdoor High Pressure Switch Activate (F12) Malfunction Decision Conditions: During operation of cooling and heating, when pressure 4.5 MPa and above is detected by outdoor high pressure switch. Malfunction Caused: Dust accumulation on the outdoor unit heat exchanger. Air short circuit at outdoor unit. Faulty water pump.
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17.5.16 Compressor Rotation Failure (F14) 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 unit PCB (main). Faulty compressor. Abnormality Judgment: Continue 4 times in 20 minutes.
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17.5.17 Outdoor Fan Motor (DC Motor) Mechanism Locked (F15) Malfunction Decision Conditions: The rotation speed detected by the Hall IC of the fan motor during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550 rpm or < 50 rpm). Malfunction Caused: Operation stop due to short circuit inside the fan motor winding.
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17.5.18 Input Over Current Detection (F16) Malfunction Decision Conditions: During operation of cooling and heating, when outdoor current above 27.9 A is detected by the current transformer (CT) in the outdoor unit PCB. Malfunction Caused: Excessive refrigerant. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 3 times in 20 minutes.
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17.5.19 Compressor Overheating (F20) Malfunction Decision Conditions: During operation of cooling and heating, when temperature above 112°C is detected by the compressor tank temperature sensor. Malfunction Caused: Faulty compressor tank temperature sensor. 2/3 way valve closed. Refrigerant shortage (refrigerant leakage). Clogged expansion valve or strainer.
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17.5.20 IPM Overheating (F22) Malfunction Decision Conditions: During operation of cooling and heating, when temperature 95°C is detected by the outdoor IPM temperature sensor. Malfunction Caused: Faulty outdoor unit fan motor. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 3 times in 30 minutes.
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17.5.21 Output Over Current Detection (F23) Malfunction Decision Conditions: During operation of cooling and heating, when outdoor DC current is above 40.1 ± 5.0 A (for: UD07~09CE) OR 44.7 ± 5.0 A (for: UD12~16CE) is detected by the IPM DC Peak sensing circuitry in the outdoor unit PCB (main). Malfunction Caused: Faulty outdoor unit PCB (main).
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17.5.22 Refrigeration Cycle Abnormality (F24) Malfunction Decision Conditions: During operation of cooling and heating, compressor frequency > Frated. During operation of cooling and heating, running current: 0.65 A < I < 1.65 A. During operation of cooling, water inlet temperature - indoor refrigerant liquid temperature < 5°C. During operation of heating, indoor refrigerant liquid temperature - water inlet temperature <...
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17.5.23 Four Way Valve Abnormality (F25) Malfunction Decision Conditions: During heating operation, when the indoor pipe temperature of thermostat ON indoor unit < 0°C. During cooling operation, when the indoor pipe temperature of thermostat ON indoor unit > 45°C. Malfunction Caused: Faulty sensor.
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17.5.24 Outdoor High Pressure Switch Abnormal (F27) Malfunction Decision Conditions: During compressor stop, and outdoor high pressure switch is remain opened. Malfunction Caused: Faulty connector connection. Faulty switch. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue for 1 minute.
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17.5.25 Outdoor Air Temperature Sensor Abnormality (F36) 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 error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
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17.5.26 Indoor Water Inlet Temperature Sensor Abnormality (F37) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water inlet temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor.
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17.5.27 Outdoor Discharge Pipe Temperature Sensor Abnormality (F40) 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 error. Malfunction Caused: Faulty connector connection. Faulty sensor.
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17.5.28 Power Factor Correction (PFC) Abnormality (F41) Malfunction Decision Conditions: During operation of cooling and heating, when the PFC protection circuitry in the outdoor unit PCB (main) senses abnormal high DC voltage level. Malfunction Caused: Power supply surge. Compressor windings not uniform. Faulty outdoor unit PCB (main).
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17.5.29 Outdoor Pipe Temperature Sensor Abnormality (F42) 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 error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
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17.5.30 Outdoor Defrost Temperature Sensor Abnormality (F43) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor defrost temperature sensor are used to determine sensor error. Malfunction Caused: Faulty connector connection. Faulty sensor. Faulty outdoor unit PCB (main).
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17.5.31 Indoor Water Outlet Temperature Sensor Abnormality (F45) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water outlet temperature sensor are used to determine sensor errors. Malfunction Caused: Faulty connector connection. Faulty sensor.
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17.5.32 Outdoor Current Transformer Open Circuit (F46) Malfunction Decision Conditions: A current transformer (CT) open circuit is detected by checking the compressor running frequency ( rated frequency) and CT detected input current (< 0.65 A) for continuously 20 seconds. Malfunction Caused: CT defective.
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17.5.33 Cooling High Pressure Overload Protection (F95) Malfunction Decision Conditions: During operation of cooling, when pressure 4.0 MPa and above is detected by outdoor high pressure sensor. Malfunction Caused: Dust accumulation in the outdoor unit heat exchanger. Air short circuit at outdoor unit. 2 way valve closed.
18. Disassembly and Assembly Instructions WARNING High Voltage are 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 To Remove Front Plate Please follow the steps below for take out front plate.
19. Technical Data 19.1 Operation Characteristics 19.1.1 WH-SDC07C3E5 WH-UD07CE5-A (WH-SDC07C3E5-1 WH-UD07CE5-A-1) Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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Heating Characteristics at Different Piping Length Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Piping Length Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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19.1.2 WH-SDC09C3E5 WH-UD09CE5-A (WH-SDC09C3E5-1 WH-UD09CE5-A-1) Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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Heating Characteristics at Different Piping Length Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Piping Length Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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19.1.3 WH-SDC12C6E5 WH-UD12CE5-A (WH-SDC12C6E5-1 WH-UD12CE5-A-1) Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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Heating Characteristics at Different Piping Length Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Piping Length Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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19.1.4 WH-SDC14C6E5 WH-UD14CE5-A (WH-SDC14C6E5-1 WH-UD14CE5-A-1) Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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Heating Characteristics at Different Piping Length Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Piping Length Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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19.1.5 WH-SDC16C6E5 WH-UD16CE5-A (WH-SDC16C6E5-1 WH-UD16CE5-A-1) Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
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Heating Characteristics at Different Piping Length Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C Piping length : 7 m...
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Cooling Characteristics at Different Piping Length Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C Piping length : 7 m...
20. Exploded View and Replacement Parts List 20.1 WH-SDC07C3E5 WH-SDC09C3E5 WH-SDC12C6E5 WH-SDC14C6E5 WH-SDC16C6E5 (WH-SDC07C3E5-1 WH-SDC09C3E5-1 WH-SDC12C6E5-1 WH-SDC14C6E5-1 WH-SDC16C6E5-1) 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.
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<Model: WH-SDC07C3E5 WH-SDC09C3E5 WH-SDC12C6E5 WH-SDC14C6E5 WH-SDC16C6E5 (WH-SDC07C3E5-1 WH-SDC09C3E5-1 WH-SDC12C6E5-1 WH-SDC14C6E5-1 WH-SDC16C6E5-1)> SDC09C3E5 SDC12C6E5 SDC14C6E5 SDC16C6E5 REF. SDC07C3E5 DESCRIPTION & NAME QTY. (WH- (WH- (WH- (WH- REMARKS (WH- SDC09C3E5- SDC12C6E5- SDC14C6E5- SDC16C6E5- SDC07C3E5-1) BASE PAN CWD521279 ← ← ← ← HOT WATER COIL-COMPLETE CWB90C1090 ←...
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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.
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<Model: WH-UD07CE5-A WH-UD09CE5-A (WH-UD07CE5-A-1 WH-UD09CE5-A-1)> WH-UD07CE5-A WH-UD09CE5-A REF. NO. DESCRIPTION & NAME QTY. REMARKS (WH-UD07CE5-A-1) (WH-UD09CE5-A-1) BASE PAN ASS’Y CWD52K1294 ← COMPRESSOR 5KD240XCC21 ← BUSHING - COMPRESSOR MOUNT CWH50055 ← NUT - COMPRESSOR MOUNT CWH561049 ← GASKET FOR TERMINAL COVER CWB811017 ←...
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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.
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<Model: WH-UD12CE5-A WH-UD14CE5-A WH-UD16CE5-A (WH-UD12CE5-A-1 WH-UD14CE5-A-1 WH-UD16CE5-A -1)> REF. WH-UD12CE5-A WH-UD14CE5-A WH-UD16CE5-A DESCRIPTION & NAME QTY. REMARKS (WH-UD12CE5-A-1) (WH-UD14CE5-A-1) (WH-UD16CE5-A-1) BASE PAN ASS’Y CWD52K1275 ← ← COMPRESSOR 5JD420XAA22 ← ← BUSHING - COMPRESSOR MOUNT CWH50055 ← ← NUT - COMPRESSOR MOUNT CWH561049 ←...