LG Electronics L8004RY4, HB8004RA4, HB8004RB4, M1004R, M8004RY4, HB1004R Is the reset circuit OK?

Page 30

Troubleshooting Guide

Electrical Parts

Possible Trouble 1

The unit does not operate.

Is the

Trans input power AC 115V?

YES

Is the Trans output power

about AC 14V?

YES

Is output Voltage of IC01D

DC 12V?

YES

Is output Voltage of IC02D

DC 5V?

YES

Is the reset circuit OK?

(The No.14 of Micom is 5V.)

YES

Is the connection between

AC and DC

OK?

YES

NO

 

• Check the Fuse.

 

 

 

 

 

 

• Check the Fuse.

 

 

 

 

• Check the wiring diagram.

 

 

 

 

• Check the wiring diagram.

 

 

 

 

 

 

NO

Is shorted the Trans. output?

NO

 

 

• Check the AC

 

 

 

 

 

 

 

 

 

PCB pattern.

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Replace the Trans.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

• Replace D02D~D05D.

 

 

 

 

 

 

 

• Replace IC01D.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

• Replace IC02D.

 

NO

• Replace IC01A, C01A.

 

NO

 

• Connect connector

 

 

 

 

 

 

exactly.

 

 

 

 

 

 

 

 

 

 

 

Is the voltage No.40 of Micom

NO

 

• Check the PCB

 

 

 

 

 

 

pattern.

 

DC 5V?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

Replace AC PCB Ass'y.

30Room Air Conditioner

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Contents LG Room Air Conditioner Table of Contents Safety Precautions Do not place the power cord near a heaterDo not disassemble or modify products Plug in the power plug properly Do not modify power cord lengthUse the air conditioner on a single outlet circuit Ensure that the outer case is not damaged by age or wear Do not clean the air conditioner with waterBe cautious not to touch the sharp edges when installing Do not block the inlet or outletDimensions Symbols Used in this ManualOutside Dimensions HBLG8004RA4/B4 CL8000ER Product SpecificationsItems Models HBLG1004RHow to Secure the Drain Pipe InstallationInstallation Check Select the Best LocationHow to Install Window RequirementsLocating Unit in Window Attach L BracketOutside Install the Sash Seal and Sash Lock Secure the Guide PanelsPrecaution The Remote Control unit will not OperationFunction of Controls Front Grille DisassemblyMechanical Parts CabinetFAN Air Handling PartsAir Guide and Turbo Fan ShroudCompressor Electrical PartsOverload Protector CapacitorPower Cord MotorRefrigerating Cycle EvaporatorCapillary Tube Disassembly Pulling Vacuum Schematic Electronic ControlWiring Diagram Description QTY RemarksMain P.C.B Assembly Components LocationTroubleshooting Guide Piping SystemTroubleshooting Guide Unit runs but poor coolingIneffective Cooling Fails to Start Electrical Parts Troubleshooting Guide Possible TroubleCompressor does not operate Possible Trouble FAN does not operate Possible Trouble Function of Energy Saver does not operatePossible Trouble Remote controller does not operate Is the reset circuit OK? Select the desired Temp. to lower Number CN-AC/DC OK? YES Connect connector Complaint Cause Remedy Troubleshooting Guide Exploded View Replacement Parts List CL8000ER L1004R Replacement Parts ListDescription Remark M1004RM8004RY4 L8004RY4 NO3828A20472A February
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