forming on cooling
coil behind front grill.
The directional louvers on the
front are positioned improperly.
Position louvers for better air distribution.
Front of unit is blocked by
drapes, blinds, furniture, etc.
and is restricting air distribution.
Clear blockage in front of unit.
Doors, windows, registers, etc.
are open and cold air is
escaping.
Close doors, windows, registers.
Unit recently turned on in hot
room.
Allow additional time for unit to remove stored
heat from walls, ceiling, floor and furniture.
Air conditioner turns
on and off
frequently.
Dirty air filter- air restricted.
Outside temperature is
extremely hot.
Set FAN speed to a Higher setting to push
more air through the coils.
Noise when unit is
cooling.
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.
Tilt air conditioner slightly downward toward
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 very humid days.
Set temperature is too low.
Increase the set temperature.
7.2 Error Codes and Sensor Malfunctions
If display indicates an AS error, use the mode button to select "Fan" and LO or HI will be
displayed to indicate the underlying condition. See section 7.3 for additional information.
Room temperature sensor error.*
1) Check sensor connection to main PCB and secure
any detached or loose connections.
2) Check sensor wire for damage and repair if
possible.
3) Test sensor (see table 7.3) Replace sensor if
defective.
Room sensor is an open circuit.*
Room sensor is a short circuit.*
Defrost sensor is open or short
circuit.
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