Troubleshooting Tips... Before you call for service
Problem
Air conditioner does
not start
Air from the unit does
not feel cold enough
Air conditioner cooling,
but room is too warm.
Ice is forming on
cooling coil behind
decorative front.
Air conditioner turns on
and off rapidly
Noise when unit is
cooling
Water dripping INSIDE
when unit is cooling
Water dripping
OUTSIDE when unit is
cooling
Room too cold
Error code "AS" in the
display
Error code "HS" in the
display
Error code " • " in the
display
12
Solution
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.
Room temperature below 62°F (17°C). Cooling may not occur until room
temperature rises above 62°F (17°C).
Temperature sensor behind air filter may be 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.
Outdoor temperature below 64°F (18°C). To defrost the coil, set FAN ONLY mode.
Air filter may be dirty. Clean the filter. Refer to Care and Cleaning section. To
defrost, set to FAN ONLY mode.
Thermostat set to cold for night-time cooling. To defrost the coil, set to FAN
ONLY mode. Then, set temperature to a higher setting.
Dirty air filter, or the air is restricted. Clean the air filter. Refer to Care and
Cleaning section.
Temperature is set too high. Set the temperature to a lower setting.
Air directional louvers positioned improperly. Position louvers for better air
distribution.
Front of unit is blocked by drapes, blinds, furniture, etc, which restricts air
distribution. Clear blockage in front of unit.
Doors, windows, registers, etc, may be open. Close doors, windows, registers.
Unit recently turned on in hot room. Allow additional time to remove "stored
heat" from walls, ceiling, floor, and furniture.
Dirty air filter, the air is restricted. Clean air filter.
Outside temperature extremely hot. Set FAN speed to a higher setting to cool
outdoor cooling coil.
Air movement sound. This is normal. If too loud, set to a slower FAN setting.
Improper installation. Refer to installation instructions or check with installer.
Improper installation. Tilt air conditioner slightly to the outside to allow water
drainage. Refer to installation instructions, and check with installer.
Unit removing large quantity of moisture from humid room. This is normal
during excessively humid days.
Set temperature to low. Increase set temperature.
Room temperature sensor error. Unplug the unit and plug it back in. If error
repeats, call for service. NOTE: In Fan only mode, it will display "LO" or "HI".
Electric heating sensor error. Unplug the unit and plug it back in. If error
repeats, call for service.
Evaporator temperature sensor error. Unplug the unit and plug it back in. If
error repeats, call for service.
49-5000492 Rev. 5