30 Room Air Conditioner
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.
■ Power failure.
■ 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.
■ Cooling coils have iced up.
■ Ice blocks the air flow and
stops the air conditioner from
cooling the room.
Air
conditioner
does not start
Air
conditioner
does not cool
as it should
Air
conditioner
freezing up
• 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.
• 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.
• See Air Conditioner Freezing Up
below.
• Set the mode control at High Fan or
High Cool with thermostat at 1 or 2.
What To DoPossible Causes
* You can refer to the Energy Star program in detail at www.energystar.gov.
