Maintenance and Service

Troubleshooting

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

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

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