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SERVICE MANUAL

APD-12A

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Summary of Contents for APD-12A

Page 1: ...SERVICE MANUAL APD 12A...

Page 2: ...factory Be sure to read the safety precautions prior to servicing the unit 1 1 SAFETY PRECAUTIONS 1 When servicing the unit set the POWER SWITCH to OFF and unplug the power cord 2 Inspect the service...

Page 3: ...with electric heater models For cooling only models Remote receiver Timer ON button Push this button to set the Timer On time Timer OFF button Push this button to set the Timer Off time Timer ON OFF...

Page 4: ...Press this button to reset all settings to factory settings 2 TROUBLESHOOTING GUIDE 2 1 REFRIGERATION CYCLE DIAGRAM 2 2 ELECTRICAL FUNCTION 2 2 1 Electric Control working environment 2 2 1 1 Input vo...

Page 5: ...d the unit will be ready to operate But if you push the power button the unit will shut the P1 display and shut down 2 2 5 Fan only Mode Function Requirement 2 2 5 1 The compressor and outdoor fan are...

Page 6: ...ge ROOM AIRCONDITIONER VOLTAGE LIMITS NAMEPLATE RATING MINIMUM MAXIMUM 220 240V 115V 196V 103V 253V 122V PROBLEM POSSIBLE CAUSE REMEDY Power failure Check the power supplier if the power supplier is s...

Page 7: ...r loose or the motor hums or noise appears to be internal while running Voltage Check voltage Call Supply Authority if not within limits Wiring Check the wire connections if loose repair or replace th...

Page 8: ...ed making the low pressure connected with the high pressure The refrigerating system can not produce high pressure and low pressure Replace the compressor after checking for the reason Cooling or heat...

Page 9: ...Wiring diagram APD 12A...

Page 10: ...9 3 3 ELECTRICAL CONTROL SCHEME...

Page 11: ...10 3 4 MAIN CONTROL BOARD SCHEME...

Page 12: ...11 3 5 DISPLAY BOARD SCHEME...

Page 13: ...ear of the unit Move the unit to a replace where water can be poured Remove the rubber plug from back of the unit and drainage the water in from the unit Remove the water tank from the unit and pour t...

Page 14: ...t push the clasp and release the assembly Now it is easy to replace the display board Take care to release the connector which connected to the display board 4 4 To disassemble the front panel Remove...

Page 15: ...on to the wires in the enclosure 1 2 3 4 5 6 7 8 9 10 1 Terminate to display board 2 Terminate to condenser fan motor 3 Out put of transformer 4 Terminate to evaporator fan motor 5 Terminate to compre...

Page 16: ...ame up then pull the frame forward Remove the screws fixing the fan shell box Remove the fan motor fan scroll and blower wheel from the unit Take care to the wires for electric heater Slide the electr...

Page 17: ...Remove the screws fixing the condenser fan motor bracket Then remove the bracket with condenser fan motor and blower wheel from the unit 4 9 To repair the refrigerant system or replace the compressor...

Page 18: ...r fan scroll Now it is easy to repair the refrigerant system 4 10 To repair the water disposal system or replace the water depth switch or the pump Remove the screws fixing the supporting board Remove...

Page 19: ...hich controls the water in tank Press the clamp fixing the water switches which control the water in the chassis Press downward here Then remove the screws fixing the switches and replace Pay attentio...

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