Troubleshooting

Maintenance and Service

The air conditioner may be operating abnormally when:

Problem	Possible Causes	What To Do

Air conditioner does not start

■ The air conditioner is	• Make sure the air conditioner plug is
unplugged.	pushed completely into the outlet.
■ The fuse is blown/circuit	• Check the house fuse/circuit breaker
breaker is tripped.	box and replace the fuse or reset the
	breaker.
■ Power failure.	• If power failure occurs, turn the mode
	control to Off.
	When power is restored, wait 3
	minutes to restart the air conditioner
	to prevent tripping of the compressor
	overload.

ENGLISH

Air conditioner does not cool as it should

■Airflow is restricted.

■The thermostat may not be set high enough.

■The air filter is dirty.

■The room may have been hot.

■Cold air is escaping.

•Make sure there are no curtains, blinds, or furniture blocking the front of the air conditioner.

•Turn the knob to a higher number. The highest setting provides maximum cooling.

•Clean the filter at least every 2 weeks. See the care and Maintenance section.

•When the air conditioner is first turned on, you need to allow time for the room to cool down.

•Check for open furnace floor registers and cold air returns.

	■ Cooling coils have iced up.	• See Air Conditioner Freezing Up
		below.

Air	■ Ice blocks the air flow and	• Set the mode control at High Fan or
conditioner	stops the air conditioner from	High Cool with thermostat at 1 or 2.
freezing up	cooling the room.

* You can refer to the Energy Star program in detail at www.energystar.gov.

Owner's Manual 29

SU/SZ CHASSIS specifications

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LG Electronics SU/SZ CHASSIS Troubleshooting, Air conditioner may be operating abnormally when

Models: SU/SZ CHASSIS