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 WC6400/WC6410/WC6500 

Service Manual

Here  below  we  listed  various  faults  while  using  the  wine  cooler,  and  the  method  of  check-up  and  solve  these 

default, and find the information of the correspondent page. 

Statement: (Fig.4 ) shows the reference figure Fig4 

(

6.1.6 ) shows the reference item 6.1.6.

 

Warning:  before  attempting  any  cleaning  or  maintenance  this  unit  MUST  be  disconnected  from  the 

electrical supply, to prevent electrical shock 

  Preparation before maintenance   

Tools

1

Pliers

      2

Phillips head screwdrivers 

3

Process pipe

4

Electrical Multi meter

 

5

Amp meter (5A) (caliper cable type)    6

Electrical soldering iron

7

Wire strippers

   

 

 

              8

Seal pliers

9.

Scissors

Equipment

1

Vacuum pump

 

 

 

2

Soldering iron for copper pipes

              3.

Refrigerant

 meter

1. Safety rules on operation of repairing. 

——————

  2

2. Electrical circuit diagram. 

————————————

  4

3. Cooling system diagram. 

——————————————

  6

4. Name and function on control panel. 

————————

  6

5. How to diagnose the fault. 

E1

E2

E3

E4

 

———

  7

6. Disassembly  

————————————————————

 10

7. How to maintain the default. 

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 24

Summary of Contents for WC6400

Page 1: ...om the electrical supply to prevent electrical shock Preparation before maintenance Tools 1 Pliers 2 Phillips head screwdrivers 3 Process pipe 4 Electrical Multi meter 5 Amp meter 5A caliper cable type 6 Electrical soldering iron 7 Wire strippers 8 Seal pliers 9 Scissors Equipment 1 Vacuum pump 2 Soldering iron for copper pipes 3 Refrigerant meter 1 Safety rules on operation of repairing 2 2 Elect...

Page 2: ...harge the rest refrigerant in the parts When discharging refrigerant make sure that it never go to the fire place and drain to outdoors Tell the customers that they never close to the discharge place and the fire is forbidden Take apart the pipe by cutter Never take apart the part by soldering otherwise it will fire the rest refrigerant in the systems and cause blast Exhaust the rest refrigerant i...

Page 3: ...r without fire The maximum weight of the refrigerant bottle loaded in the vehicle should be comply to stated the bottle should be place upright the maximum leaning angle is 40 Do use the appointed part otherwise it have chance to smoke fire or default Please put the default compressor into plastic bag and seal the peristome then pack it with strip as the rest compressor oil may leak in the vehicle...

Page 4: ...on the burr The burr on the metal or plastic part may hurt the hand Attention the fins of the evaporator The fins of the evaporator may hurt the hand Drive up the wine cooler when moving it Pushing it may damage the floor Cover a protector board on the easy damage floor 2 Electrical circuit diagram 2 1 Normal PCB ...

Page 5: ...5 27 2 2 Switching power supply PCB ...

Page 6: ...t on press again the light off it is not effect by the door switch Press it and hold on for three seconds will enter the time adjustment Press to adjust the hour press to adjust the minute Press it one time the power on press it and hold on for three seconds the power off l The default setting temp of this wine cooler are upper compartment 6 lower compartment 12 but when restart the wine cooler af...

Page 7: ... or setting temp a In the readout display actual temp mode press the or the systems enter the temperature setting mode and the setting temperature twinkling Five seconds twinkling after stopping adjust temperature the readout stop twinkling and the readout show actual temperature the temperature setting mode end b In the readout display actual temp mode press the or the systems enter the temperatu...

Page 8: ...s normal replace the sensor please E2 Upper compartment sensor short circuit Check the wiring and connection between PCB and sensor if it short circuit If the connection and wiring is normal replace the sensor please E3 Defrost sensor open circuit Check the wiring and connection between PCB and sensor if it open circuit If the connection and wiring is normal replace the sensor please E4 Defrost se...

Page 9: ...uzzer alarm and the compressor stop at the same time when the inner temperature is over 2ºC the LO warning stop Remark some models without the HI and LO warning function 5 3 Diagnose the defaults There isn t any display on the display PCB Not cooling the compressor stop No Yes No No Yes Yes Yes No If the inner light can be turn on Check the power source power cord plug socket Display error code Re...

Page 10: ...either side make the stopper on the out of the guiding rail then pull the shelf out Fig 1 No Yes No Yes No No Yes The compressor run for more than 30 minutes If the door opened frequently Don t open the door frequently If the hot goods was put into the cabinet If the door gasket airproof Cooling system default Check if any gas leakage or block It can be loaded with normal temperature wine bottle R...

Page 11: ...rol panel film Remove all shelves Remove control panel film Remove all shelves then peel off the control panel film Be careful don t damage the control panel file as it have to be fixing again Fig 2 2 Remove the display supporter The process Remove the shelves Remove the control panel film Remove the screws Remove the display supporter Remove the shelves after removing the control panel film Fig 2...

Page 12: ...lay supporter Remove the middle electrical box Remove the shelves remove the control panel film and control box Fig 2 Fig 3 Remove the four middle electrical box fixing screws disconnect the light connecter remove the middle electrical box Fig 4 Screws B Screws A Control box Fig 3 Middle electrical box LED light connector Screws Fig 4 ...

Page 13: ...nnecter remove the middle electrical box Fig 4 remove the middle air duct board fixing screws remove the middle air duct board Fig 5 5 Remove the inner air duct board The process Remove the shelves Remove the control panel film Remove the screws Remove the display supporter Remove the middle electrical box Remove the screws Remove the upper and lower air duct board Remove the inner air duct board ...

Page 14: ...ig 7 A Capillary solder joint B Suction pipe solder joint C Upper compartment fan connector D Upper compartment sensor connector E Heater fan connector F Heater connector G Defrost sensor connector H Air cycling fan connector I Lower compartment sensor J Evaporator Screws Inner air duct board Fig 6 ...

Page 15: ...move the back air duct board 1 Remove the middle control box The process Remove the shelves Remove the screws Remove the middle electrical box Remove the shelves Remove the middle electrical box fixing screws disconnect the light connecter remove the middle electrical box Fig 7 1 2 Remove the control box The process Remove the shelves Remove the control panel film Remove the screws Fig 7 C D E F G...

Page 16: ... shelves Remove the screws Remove the middle control box Remove the display supporter Remove the upper and lower air duct board Remove the screws Remove the inner air duct board Remove the shelves remove the middle control box Fig 7 1 Remove the upper and lower panel of the middle air duct board Fig 5 Remove the screws fixing back air duct board disconnect the connector and remove the back air duc...

Page 17: ...ck of it and remove the display PCB Fig 8 Fig 8 1 6 1 4 2 Style B The process Remove the display supporter remove the display PCB Remove the control box 6 1 2 pull the control box upper and lower parts outward and take the display PCB and it s supporter out Fig 8 2 pull the hooks and remove the display PCB Control box Fig 8 Fig 8 1 Display PCB Display supporter Display PCB Control box Fig8 2 ...

Page 18: ...r remove the inner air duct board 6 1 2 remove the fans fixing screws and we can remove the fan Fig 9 6 1 6 How to remove the heater The process Remove the shelves Remove the control panel film Remove the screws Remove the display supporter Remove the middle electrical box Remove the screws Remove the upper and lower air duct board Remove the inner air duct board Remove the heater fixing screws Re...

Page 19: ...sor cover C loose pull out the sensor B Fig 11 2 How to remove the lower compartment sensor The process Remove the shelves Remove the lower air duct board remove the sensor Remove the shelves remove the lower air duct board we can see the lower compartment sensor remove the sensor fixing screw and remove the sensor Fig 7 6 1 8 How to remove the LED light 1 How to remove the lower compartment LED l...

Page 20: ...e light cover Remove the LED light fixing screws Remove the LED light Remove the shelves Fig 1 Remove two light cove fixing screws remove the light cover Fig 13 Remove the LED light fixing screw in the middle of it remove the LED light Fig 13 1 Fig 13 1 Middle electrical box Foam in the middle electrical box LED connector LED light Fig 12 Screws Screw Fig 13 Fig 12 1 Nails Light ...

Page 21: ...ormer fixing screws Not for Switching power supply PCB Fig 14 1 6 2 2 How to remove the main PCB The process of removing power box Remove the power box Disconnect the connectors on the main PCB Remove the main PCB After disconnect the connectors press the head of the PCB supporting nails one by one and remove the main PCB at the same time it is better press the nail with sharp end pliers Fig 15 Sc...

Page 22: ...per compartment sensor T1 4 Door switch 5 Transformer secondary 6 Compressor 7 Power N 8 Transformer primary N 9 Transformer L 10 Power L 11 PTC heater 12 Outer fan RED 13 Display PCB 14 Upper fan F1 15 Lower fan F2 16 Heater fan F3 17 LED light WHITE Diagram of Switching power supply PCB connection Fig 16 1 Fig 16 ...

Page 23: ...emove the compressor Fig 17 Diagram of rear soldering joints Fig 17 A Jointing pipe and condenser joint B Process pipe joint C Electrical cover of compressor D Compressor E Suction pipe joint F Discharge pipe joint G Capillary joint H Condenser and filter joint I Outer water tank support J Four condenser fixing screws K Condenser and filter joint 6 2 4 How to remove the outer condenser Process of ...

Page 24: ...pipe See Fig 17 item F of the compressor and infuse 0 8 1 5 MP nitrogen per process pipe and put the hand close to the cut kerf If there is a little gas leak from the terminal it means normal otherwise it is jammed b Make sure the capillary is working normally Then reconnect the discharge pipe and infuse 0 8 1 5 MP nitrogen from process pipe then test the leakage check with soap water if the cooli...

Page 25: ...nd standard noise The noise should not exceed 32dB and it is normal 2 If the noise is extremely high and abnormal replace the default fan please 6 1 5 7 6 Refrigerant jet noise Default There is continuous noise like a water spray from the capillary Reason The end of the capillary is in the wrong position or there are rough edges on the end of the capillary Solution 1 Remove the evaporator 6 1 3 he...

Page 26: ...the ice is too thick and it will block the fan or broken the fan The solution 1 Replace the door seal or close the door well If the door seal is slightly not air proof it can be repaired by the heat dryer Aiming at the distortion of the seal with the heat dryer and move up and down until it expand to the normal state When it is cool check it with the door closed if there is any distortion dry it a...

Page 27: ...d cut the switch Fig 19 Fig 19 1 3 Peel off the scarfskin on the end about 12mm cut the spare switch and peel off the scarfskin connect the ends and wrap the ends with insulating tape Fig 20 Fig 20 1 4 If above process finis it still fault that means the wiring damaged in the foam you have to have another wiring along the bottom and back of the cabinet to connect the switch Screws Scissors 12mm st...

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