LG Electronics HB8004RA4, L8004RY4, HB8004RB4, M1004R, M8004RY4, HB1004R Connect connector

Page 33

Troubleshooting Guide

Possible Trouble 6

It displays abnormally on DC PCB Ass’y.

Are IC01G and IC02G		NO			• Replace IC01G,
		NO			• Replace IC01G,
					IC02G.
					IC02G.
OK?
	YES


	NO
	NO	NO			• Connect connector
Is the connection of					• Connect connector
Is the connection of					to CN-AC/DC exactly.
CN-AC/DC OK?					to CN-AC/DC exactly.
CN-AC/DC OK?
	YES


Does the IC03G		NO
Does the IC03G		NO			• Replace IC03G.
operate normally on AC
operate normally on AC
PCB Ass'y?
PCB Ass'y?
	YES
	YES

•Replace the DC PCB Ass'y.

Service Manual 33

Image 33

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 Be cautious not to touch the sharp edges when installing Do not clean the air conditioner with waterEnsure that the outer case is not damaged by age or wear Do not block the inlet or outletDimensions Symbols Used in this ManualOutside Dimensions Items Models Product SpecificationsHBLG8004RA4/B4 CL8000ER HBLG1004RInstallation Check InstallationHow to Secure the Drain Pipe Select the Best LocationWindow Requirements How to InstallLocating Unit in Window Attach L BracketOutside Secure the Guide Panels Install the Sash Seal and Sash LockPrecaution The Remote Control unit will not OperationFunction of Controls Mechanical Parts DisassemblyFront Grille CabinetAir Guide and Turbo Fan Air Handling PartsFAN ShroudOverload Protector Electrical PartsCompressor CapacitorMotor Power CordRefrigerating Cycle EvaporatorCapillary Tube Disassembly Pulling Vacuum Electronic Control SchematicDescription QTY Remarks Wiring DiagramComponents Location Main P.C.B AssemblyPiping System Troubleshooting GuideTroubleshooting Guide Unit runs but poor coolingIneffective Cooling Fails to Start Possible Trouble Electrical Parts Troubleshooting GuideCompressor does not operate Possible Trouble Function of Energy Saver does not operate Possible Trouble FAN 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 Description Remark Replacement Parts ListCL8000ER L1004R M1004RM8004RY4 L8004RY4 NO3828A20472A February