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Air Conditioner
Doesn’t Start
Air Conditioner Does
Not Cool or Heat as
it Should
The air conditioner • Make sure the air conditioner plug is
is unplugged pushed completely into the outlet.
The fuse is blown/circuit • Check the house fuse/circuit breaker
breaker is tripped box and replace 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.
• There is a protective time delay (up to 3
minutes) in the heat/cool and heat pump
models. Wait 3 minutes for the air
conditioner to resume heating or cooling.
Problem Possible Causes What to Do
Air Conditioner
Freezing Up
Ice blocks the airflow • Set the mode control at
HIGH FAN
or
and stops the air conditioner
HIGH COOL
with the thermostat
from cooling the room at a warmer setting.
Airflow is restricted
• Make sure there are no curtains, blinds
or furniture blocking the front of the
air conditioner.
The thermostat control • Turn the knob to a warmer or cooler setting.
may not be set high The coolest setting provides maximum
or low enough cooling. The warmest setting provides
maximum heating on models with heat.
The air filter is dirty • Clean the filter at least every 30 days.
See the Care and Cleaning section.
The room may have been hot • When the air conditioner is first turned on
or cold you need to allow time for the room to
cool down or warm up.
Cold air is escaping • Check for open furnace floor registers and
cold air returns.
• Set the exhaust vent in the closed position.
Cooling coils have iced up • See freezing up below.
If Something Goes Wrong
Before You Call for Service