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Troubleshooting  
Tips
Problem Solution
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.
Check for potential obstructions blocking the outdoor intake/exhaust. 
Clear any obstructions.
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 
26.2 feet & 180°, radius of the front of the unit, and pointed
in the general direction of the air conditioner unit.
Remote control signal obstructed. Remove obstruction.
Room too cold. Temperature setting too low. Increase temperature setting.
Noise when unit 
starts.
A “da-da” sound may occur for thirty seconds when the unit is turned 
on due to the compressor starting. It is normal.