LG Electronics LF300CP(LP-C303R20), LF480CE(LP-C483TA0) service manual No heater operation works

Page 40

8) No heater operation works

Is the heating operating?

 

NO

 

YES

 

 

 

 

 

 

 

 

 

Is the Compressor

 

NO

operating?

 

 

 

YES

 

 

 

 

 

 

 

 

NO

Is the Heat S/W of Main

 

PCB "ON"?

 

 

YES

 

Is the DC 5V at 15 pin of

 

NO

 

 

 

 

MICOM

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

Is the

 

NO

 

DC 12V at eack terminal?

 

 

(RY-Heater COIL)

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

Is the

 

NO

 

AC220V (AC 240 V) between

 

 

connector(HEATER) and CN-outunit Pin 1

 

 

 

 

 

 

of Main P.C.B

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check the heater wiring

 

 

 

 

 

 

 

 

 

 

 

 

Select the heating operation mode.

Compressor "ON"

Heat S/W "ON"

Replacement MICOM

Replacement ICO2M

Replacement RY-Heater

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Contents Floor Standing Type Air Conditioner Model LF300CPLP-C303R20 LF480CELP-C483TA0Contents Safety Precautions InstallationDo not install, remove, or re Do not install the product on aDefective installation stand OperationalBe cautious that water could not enter the product Use two or more people to lift and transport the product Keep level even when installing the productDo not step on or put anyting on the product. outdoor units Functions Indoor UnitRemote Control Timer ControlFan Operation Airflow Direction ControlDeice Control Outdoor UnitOutdoor Fan Speed Control Product Specifications CapacityIndoor Unit LPNC303R20 LF300CP DimensionsOutdoor Unit LPUC303R20 LF300CP Indoor Unit Outdoor UnitIndoor Unit LPNC483TA0 LF480CE Door Unit LPUC483TA0 LF480CEItems Air Outlet Vent Air Inlet Vent Control display Wiring Diagram OutdoorLF480CELP-C483TA0 Outdoor Time Delay Safety Control Cooling Mode OperationOff Timer Function Operation DetailsHeating Mode Operation Hot-Start Control Defrost ControlSoft Dry Operation Mode Protection of the evaporator pipe from frostingAir Purifying OperationAP-Z286RC0, AP-Z286R20, AP-Z488TC0 Child Lock functionAlarm mode display / only displayed while operating Energy SavingOperation or Cancel Function for test operationOutline of Operation FunctionSelection of the best location Installation of Indoor, Outdoor UnitCooling Only Model Outdoor unit Installation Indoor Unit installationRefrigerant amount Connection of power supply Test runningEvaluation of the performance Operate the unit for fifteen minutes or moreHand Over Troubleshooting Guide Failures to StartNo cooling and heating operation performed Only blowers do not workOnly outdoor fan does not work Only compressor does not workUnits discontinue after the operation started Unit is working, but not cooling and heating sufficiently Both blower and compressor are workingFault Cause Check/Correcitve Action Trouble checking by protection devicesCause for frequent stop and start operation Electronic Parts Troubleshooting Guide No cooling operation performedIndoor fan does not operate Airflow Direction does not operate Remote control does not operate Timer control does not operate. Replacement Micom Unit does not operateNo heating operation works No heater operation works Exploded View and Replacement Parts List Model LF300CPLP-C303R20W1WE Model LF480CELP-C483TA0 W0CZZ 435512 559010 546810 554030 Model LF480CELP-C483TA0 December No A20156T
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