You can solve many common air conditioner problems easily, saving you the cost of a service call. Try the suggestions below to
see whether you can solve your problem without outside help.
Air conditioner will not operate.
The power supply cord is unplugged. Plug into a grounded
3 prong outlet. See "Electrical Requirements."
A household fuse has blown or circuit breaker has
tripped. Replace the fuse or reset the circuit breaker. Plug
into a grounded 3 prong outlet. See "Electrical
The Fan control is turned to the off position (on some
models). Turn the FAN control to an active setting.
The local power has failed. Wait for power to be restored.
Air conditioner blows fuses or trips circuit breakers.
Too many appliances are being used on the same circuit.
Unplug or relocate appliances that share the same circuit.
Time-delay fuse or circuit breaker of the wrong capacity
is being used. Replace with a time-delay fuse or circuit
breaker of the correct capacity. See "Electrical
An extension cord is being used. Do not use an extension
cord with this or any other appliance.
You are trying to restart the air conditioner too soon after
turning the Fan off (or unplugging air conditioner). Wait at
least 3 minutes after turning the Fan off before trying to
restart the air conditioner.
Air conditioner seems to run too much.
The current air conditioner replaced an older model. The
use of more efficient components may cause the air
conditioner to run longer than an older model, but the total
energy consumption will be less. Newer air conditioners do
not emit the "blast" of cold air you may be accustomed to
from older units, but this is not an indication of lesser cooling
capacity or efficiency. Refer to the efficiency rating (EER) and
capacity rating (in BTUs/hr.) marked on the air conditioner.
The air conditioner is in a heavily occupied room, or heat-
producing appliances are in use in the room. Use exhaust
vent fans while cooking or bathing and try not to use heat-
producing appliances during the hottest part of the day. A
higher capacity air conditioner may be required, depending
on the size of the room being cooled.
Air conditioner cycles on and off too much, or does not
FAN control is set to POWER SAVER (on some models).
Use Power Saver only when you are away from home or
asleep, since the fan does not circulate the room air
continuously. Use Low Cool, High Cool (on some models) or
Turbo Cool for your best comfort.
The air conditioner is not properly sized for your room.
Check the cooling capabilities of your room air conditioner.
Room air conditioners are not designed to cool multiple
The filter is dirty or obstructed by debris. Clean the filter.
The inside evaporator and outside condenser coils are
dirty or obstructed by debris. See "Annual Maintenance."
There is excessive heat or moisture (open container
cooking, showers, etc.) in the room. Use a fan to exhaust
heat or moisture from the room. Try not to use heat-
producing appliances during the hottest part of the day.
The louvers are blocked. Install the air conditioner in a
location where the louvers are free from curtains, blinds,
The outside temperature is below 65°F (18°C). Do not try to
operate your air conditioner in the cooling mode when the
outside temperature is below 65°F (18°C).
The temperature of the room you are trying to cool is
extremely hot. Allow extra time for the air conditioner to cool
off a very hot room.
Windows or doors to the outside are open. Close all
windows and doors.
The Exhaust control is set to OPEN (on some models). Set
the Exhaust control to CLOSED for maximum cooling.
The Thermostat control is not at a cool enough setting.
Adjust the Thermostat control to a cooler setting by turning
the knob clockwise. Turn FAN control to TURBO COOL (on
Water drips from cabinet into your house.
The air conditioner is not properly leveled. The air
conditioner should slope slightly downward toward the
outside. Level the air conditioner to provide a downward
slope toward the outside to ensure proper drainage. See the
NOTE: Do not drill a hole in the bottom of the metal base and