LG Electronics L8004RY4, HB8004RA4, HB8004RB4, M1004R, M8004RY4, HB1004R Complaint Cause Remedy

Troubleshooting Guide

COMPLAINT	CAUSE	REMEDY
Fan motor will not run.	No power	Check voltage at outlet. Correct if none.
	Power supply cord	Check voltage to Control Box. If none, check power
		supply cord. Replace cord if circuit is open.
	Wire disconnected or con-	Connect wire. Refer to wiring diagram for terminal
	nection loose	identification. Repair or replace loose terminal.
	Capacitor (Discharge	Test capacitor.
	capacitor before testing.)	Replace if not within ±10% of manufacturer's rating.
		Replace if shorted, open, or damaged.
	Will not rotate	Fan blade hitting shroud or blower wheel hitting
		scroll. Realign assembly.
		Units using slinger ring for condenser fan must have
		1/4 to 5/16 inch clearance to the base. If it hits the
		base, shim up the bottom of the fan motor with
		mounting screw(s).
		Check fan motor bearings; if motor shaft will not
		rotate, replace the motor.
Fan motor runs	Revolves on overload.	Check voltage. If not within limits, call an electrician.
intermittently		Test capacitor.
		Check bearings. Does the fan blade rotate freely?
		If not, replace fan motor.
		Pay attention to any change from high speed to
		low speed. If the speed does not change, replace the
		motor.
Fan motor noise.	Fan	If cracked, out of balance, or partially missing,
		replace it.
	Turbo	If cracked, out of balance, or partially missing,
		replace it.
	Loose clamper	Tighten it.
	Worn bearings	If knocking sounds continue when running or loose,
		replace the motor. If the motor hums or noise
		appears to be internal while running, replace motor.
Compressor will not run,	Voltage	Check voltage.
but fan motor runs.		If not within limits, call an electrician.
	Wiring	Check the wire connections, if loose, repair or
		replace the terminal. If wires are off, refer to wiring
		diagram for identification, and replace. Check wire
		locations. If not per wiring diagram, correct.

34Room Air Conditioner