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Troubleshooting
Tips
5
Troubleshooting Tips
Before calling for service, review this list. It may save you time and expense. This list
includes common occurrences that are not the result of defective workmanship or
materials in this appliance.
Problem Solution
Air conditioner
does not start
Wall plug disconnected. Push plug firmly into wall outlet.
House fuse blown or circuit breaker tripped. Replace fuse with time delay type
or reset circuit breaker.
Plug current device tripped. Press the RESET button.
Power is OFF. Turn power ON.
Air from unit
does not feel cold
enough
Room temperature below 17°C (62°F). Cooling may not occur until room
temperature rises above 17°C (62°F).
Temperature sensing behind air filter element touching cold coil. Keep it from
the cold coil.
Set to a lower temperature.
Compressor stopped when changing modes. Wait for 3 minutes after set to the
COOL mode.
Air conditioner
cooling, but room
is too warm- ice
forming on
cooling coil behind
decorative front.
Outdoor temperature below 18°C (64°F). To defrost the coil, set FAN ONLY mode.
Air filter may be dirty. Clean filter. Refer to Care and Cleaning section. To defrost,
set to FAN ONLY mode.
Thermostat set too cold for night-time cooling. To defrost the coil, set to FAN
ONLY mode. Then, set temperature to a Higher setting.
Air conditioner
cooling, but room
is too warm- NO
ice forming on
cooling coil behind
decorative front
Air filter may be dirty. Clean filter. Refer to Care and Cleaning section. To defrost,
set to FAN ONLY mode.
Temperature is set too High, set temperature to a lower setting.
Air directional louvers positioned improperly. Position louvers for better air distribution.
Front of units is blocked by drapes, blinds, furniture, etc. - restricts air distribution.
Clear blockage in front of unit.
Doors, windows, registers, etc. Open- cold air escapes. Close doors, windows, registers.
Unit recently turned on in hot room. Allow additional time to remove “Stored heat”
from walls, ceiling, floor and furniture.
Air conditioner
turns on and off
rapidly
Dirty air filter- air restricted. Clean air filter.
Outside temperature extremely hot. Set FAN speed to a Higher setting to bring
air past cooling coils more frequently.
Noise when unit is
cooling
Air movement sound. This is normal . If too loud, set to a slower FAN setting.
Window vibration - poor installation. Refer to installation instructions or check with installer.
Water dripping
INSIDE when unit
is cooling
Improper installation. Tilt air conditioner slightly to the outside to allow water
drainage.
Refer to installation instructions - check with installer.
Water dripping
OUTSIDE when
unit is cooling
Unit removing large quantity of moisture from humid room. This is normal during
excessively humid days
Remote Sensing
Deactivating
Prematurely
(some models)
Remote control not located within range. Place remote control within 20 feet & 180°,
radius of the front of the unit.
Remote control signal obstructed. Remove obstruction.
Room too cold Set temperature too low. Increase set temperature.
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