LG Electronics PACKAGED TERMINAL AIR CONDITIONER/HEAT PUMP owner manual Fan motor noise

Maintenance and Service

COMPLAINT

CAUSE

REMEDY

■ Grommets	• Check grommets; if worn or missing, replace them.
■ Fan	• If cracked, out of balance, or partially missing,
	replace it.
■ Loose set screw	• Tighten it.
Fan motor noise.	• If knocking sounds continue when running or loose,
■ Worn bearings

replace the motor. If the motor hums or noise appears to be internal while running, replace motor.

■Voltage

■Wiring

■Rotary

Compressor will ■ Thermostat not run, but fan

motor runs.

■Capacitor (Discharge capacitor before servicing.)

■Compressor

■Overload

•Check voltage. See the limits on the preceding. page. If not within limits, call an electrician.

•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.

•Check for continuity, refer to the wiring diagram for terminal identification. Replace the switch if circuit is open.

•Check the position of knob If not at the coldest setting, advance the knob to this setting and restart unit.

Check continuity of the thermostat. Replace thermostat if circuit is open.

•Check the capacitor.

Replace if not within ±10% of manufacturer's rating. Replace if shorted, open, or damaged.

•Check the compressor for open circuit or ground. If open or grounded, replace the compressor.

•Check the compressor overload, if externally mounted. Replace if open. (If the compressor temperature is high, remove the overload, cool it, and retest.)

22Room Air Conditioner