LG LS090CE Owner's Manual page 28

Maintenance and Service
Troubleshooting
The air conditioner may be operating abnormally when:
Problem
The air conditioner is
unplugged.
The fuse is blown/circuit
breaker is tripped.
Air
conditioner
Power failure.
does not start
Airflow is restricted.
The air filter is dirty.
Air
conditioner
The room may have been
does not cool
hot.
as it should
Cold air is escaping.
Cooling coils have iced up.
* You can refer to the Energy Star program in detail at www.energystar.gov.
28 Room Air Conditioner
Possible Causes What To Do
• Make sure the air conditioner plug is
pushed completely into the outlet.
• Check the house fuse/circuit breaker
box and replace the fuse or reset the
breaker.
• 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.
• Make sure there are no curtains,
blinds, or furniture blocking the front of
the air conditioner.
• 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.
• See Air Conditioner Freezing Up
below.