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.
• Change the system to fan mode and
allow the air to defrost the machine. In
this condition, some of the water
melting from the air conditioner may
drip from the machine. After it has
defrosted, you may return the system
to cooling mode. Check your air filters
to ensure that they are clean (clean if
necessary). If the indoor unit
repeatedly ices up, please call your
installing contractor or authorized
dealer for advice.
What To Do
Possible Causes
* You can refer to the Energy Star program in detail at www.energystar.gov.
Maintenance and Service
