11
Troubleshooting
WARNING!
ELECTRICAL SHOCK HAZARD! Never attempt to repair the indoor or outdoor unit yourself.
System repairs must be performed by a licensed, professional technician, or equivalent.
If any of the following conditions exist, immediately turn the system (indoor and outdoor
units) off at the unit disconnect switch and call a licensed professional technician, or equiva-
lent, for repairs
D
There is a very loud sound during unit operation.
D
There is a terrible odor coming from the indoor unit during operation.
D
Water is leaking into the room.
D
The circuit breaker trips frequently.
D
Water or some other liquid has been splashed into the indoor unit.
If none of the above conditions exist, check the following items before calling for repairs. This can
save you both time and money.
Problem
Possible Cause
Unit does not operate immediately when restarted. Unit control initiates a 3−minute delay at the end of
each cycle to protect the compressor from dam-
age.
A whoosh or gurgling noise can be heard at the
indoor unit.
Sometimes, the refrigerant can be heard in the
indoor coil when the outdoor unit starts or stops
operation. This is not a malfunction.
Mist is coming out of the indoor unit during cooling
operation.
This sometimes happens when the indoor temper-
ature and humidity are very high and the air is be-
ing cooled quickly. The mist will disappear as the
indoor temperature and humidity are lowered.
A creaking or popping noise can be heard when
the unit starts or stops.
The plastic components of the indoor units some-
times expand and contract when they are heated
and cooled.
Unit is not operating.
Are the TIMER ON and TIMER OFF features be-
ing used incorrectly?
Is power disconnected or has circuit breaker
tripped.
Is power shut down?
System is not cooling (or heating) efficiently.
Is temperature setting correct?
Are either the air inlet or air outlet blocked on the
outdoor or indoor unit?
Is filter dirty?
Is fan at low speed?
Are windows and doors properly shut?
Wireless remote is not working.
Is remote in direct line of sight with indoor unit in-
frared receiver? Has the remote been damaged?
Remove remote control batteries for 30 seconds,
then reinsert them. Replace batteries, if neces-
sary.
Water is leaking from indoor unit.
Indoor humidity level is very high and water is be-
ing blown from indoor coil. This will stop as humid-
ity level is reduced.
