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28 Room Air Conditioner
Troubleshooting
The air conditioner may be operating abnormally when:
Problem
■ The air conditioner is
unplugged.
■ The fuse is blown/circuit
breaker is tripped.
■ Power failure.
■ Airflow is restricted.
■ The air filter is dirty.
■ The room may have been
hot.
■ Cold air is escaping.
■ Cooling coils have iced up.
Air
conditioner
does not start
Air
conditioner
does not cool
as it should
• 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.
What To DoPossible Causes
* You can refer to the Energy Star program in detail at www.energystar.gov.
Maintenance and Service