LG Electronics L8004RY4, HB8004RA4, HB8004RB4, M1004R, M8004RY4, HB1004R Cn-Ac/Dc Ok? Yes

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Troubleshooting Guide

Possible Trouble 4	FAN does not operate.

Is the voltage NO.1 or 2 or 4		NO

of IC01M DC 5V?
	YES

Is the voltage NO.16 or 15 or 13		NO

of IC01M 0V?

YES

•Check the RY-Hi or RY-Med or RY-Lo.

•Check the wiring diagram.

Possible Trouble 5	Remote controller does not operate.

	Is the voltage of Battery		NO
	over 2.3V?
		YES
		YES
	Is the voltage No.10		NO
	of CN-AC/DC on AC PCB		NO
	of CN-AC/DC on AC PCB
	Ass'y DC 5V?
		YES
		YES
	Is the connection of		NO
	CN-AC/DC OK?

YES

• Replace Receiver Ass'y.

• Replace IC01M.

• Replace IC01M.

• Replace the battery.

•Check the PCB pattern.

•Check the PCB pattern.

•Connect connector to CN-AC/DC exactly.

32Room Air Conditioner

Image 32

Contents LG Room Air Conditioner Table of Contents Do not disassemble or modify products Safety PrecautionsDo not place the power cord near a heater Use the air conditioner on a single outlet circuit Plug in the power plug properlyDo not modify power cord length Do not clean the air conditioner with water Be cautious not to touch the sharp edges when installingEnsure that the outer case is not damaged by age or wear Do not block the inlet or outletOutside Dimensions DimensionsSymbols Used in this Manual Product Specifications Items ModelsHBLG8004RA4/B4 CL8000ER HBLG1004RInstallation Installation CheckHow to Secure the Drain Pipe Select the Best LocationHow to Install Window RequirementsOutside Locating Unit in WindowAttach L Bracket Install the Sash Seal and Sash Lock Secure the Guide PanelsFunction of Controls Precaution The Remote Control unit will notOperation Disassembly Mechanical PartsFront Grille CabinetAir Handling Parts Air Guide and Turbo FanFAN ShroudElectrical Parts Overload ProtectorCompressor CapacitorPower Cord MotorCapillary Tube Refrigerating CycleEvaporator Disassembly Pulling Vacuum Schematic Electronic ControlWiring Diagram Description QTY RemarksMain P.C.B Assembly Components LocationTroubleshooting Guide Piping SystemIneffective Cooling Troubleshooting GuideUnit runs but poor 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 Replacement Parts List Description RemarkCL8000ER L1004R M1004RM8004RY4 L8004RY4 NO3828A20472A February