LG Electronics HB8004RA4, L8004RY4, HB8004RB4, M1004R, M8004RY4, HB1004R service manual Fails to Start

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Troubleshooting Guide

Fails to Start

Check of power source.

Check of control switch setting.

Compressor only fails to start.

Drop of power voltage.

Check circuit breaker and fuse.

Gas leakage of feeler bulb of thermostat

Check of control switch.

Fan only fails to start.

Improper wiring.

Improper thermostat setting.

Defect of compressor capacitor.

Loose terminal connection.

Defect of fan motor capacitor.

Irregular motor resistance ().

Capacitor check.

Replacement

Improper wiring.

Irregular motor insulation ().

Replacement of fan motor.

Irregular motor resistance ( )

Irregular motor insulation ( )

Replacement of compressor (Motor damaged)

Regular but fails to start.

Replacement of compressor (locking of rotor, metal).

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Contents LG Room Air Conditioner Table of Contents Do not place the power cord near a heater Safety PrecautionsDo not disassemble or modify products Do not modify power cord length Plug in the power plug properlyUse 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 outletSymbols Used in this Manual DimensionsOutside Dimensions Items Models Product SpecificationsHBLG8004RA4/B4 CL8000ER HBLG1004RInstallation Check InstallationHow to Secure the Drain Pipe Select the Best LocationWindow Requirements How to InstallAttach L Bracket Locating Unit in WindowOutside Secure the Guide Panels Install the Sash Seal and Sash LockOperation Precaution The Remote Control unit will notFunction of Controls Mechanical Parts DisassemblyFront Grille CabinetAir Guide and Turbo Fan Air Handling PartsFAN ShroudOverload Protector Electrical PartsCompressor CapacitorMotor Power CordEvaporator Refrigerating CycleCapillary Tube Disassembly Pulling Vacuum Electronic Control SchematicDescription QTY Remarks Wiring DiagramComponents Location Main P.C.B AssemblyPiping System Troubleshooting GuideUnit runs but poor cooling Troubleshooting GuideIneffective 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