TROUBLESHOOTING
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 grounded
The power supply cord trips (Reset button will pop out).
3 prong outlet. See “Electrical Requirements.”
Press and release RESET (listen for click; Reset button will
latch and on some devices, a green light will turn on) to
resume operation.
A household fuse has blown or circuit breaker has
tripped.
Replace the fuse or reset the circuit breaker. See
“Electrical Requirements.”
Depending on model, the Power button has not been
pressed or the Fan Speed control is turned to Off.
Press
POWER button or turn the FAN SPEED control to an active
setting.
The local power has failed.
Wait for power to be restored.
Air conditioner blows fuses or trips circuit breakers
Unplug or relocate appliances that share the same circuit.
Too many appliances are being used on 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
Requirements.”
An extension cord is being used.
Do not use an extension
cord with this or any other appliance.
unit off before trying to restart the air conditioner.
turning the unit off.
Wait at least 3 minutes after turning the
You are trying to restart the air conditioner too soon after
Air conditioner power supply cord trips (Reset button
pops out)
Disturbances in your electrical current can trip (Reset
button will pop out) the power supply cord.
Press and
release RESET (listen for click; Reset button will latch and on
some devices, a green light will turn on) to resume operation.
An electrical overloading, overheating, pinching or aging
can trip (Reset button will pop out) the power supply
cord.
After correcting the problem, press and release RESET
(listen for click; Reset button will latch and on some devices,
a green light will turn on) to resume operation.
NOTE:
A damaged power supply cord must be replaced with a
new power supply cord obtained from the product manufacturer.
A damaged power supply cord must not be repaired.
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 BTU/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
cool
The Mode 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, High or Turbo 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
rooms.
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,
furniture, etc.
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).
Push the Exhaust control CLOSED for maximum cooling.
Depending on model, the Temp/Time or Temperature
control is not at a cool enough setting.
Adjust the TEMP/
TIME control to a cooler setting by pressing the minus button
to reduce the temperature or adjust the TEMPERATURE
control to a cooler setting by turning the knob clockwise. Set
the FAN SPEED control to highest setting (Turbo or High,
depending on model).
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
Installation Instructions.
NOTE:
Do not drill a hole in the bottom of the metal base and
condensate pan.
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