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12. TROUBLE SHOOTING
If you have problems with your room air conditioner, check this trouble-shooting guide before
contacting your service.
If the abnormality persists and cannot be solved with the given instructions, turn off the air conditioner
and does not try to turn it on again, call your service representative.
TROUBLE POSSIBLE CAUSES SOLUTIONS
After batteries have
been placed into the
remote control, the
remote control can
not operate the air
conditioner.
Batteries are exhausted or have the
wrong polarity.
Replace batteries or check polarity.
When pressing start
button, unit does not
acknowledge signal
with a beep.
OR
When pressing stop
button, unit does not
acknowledge signal
with a beep.
Main switch is OFF. Switch it to ON position.
Remote control batteries are
exhausted.
Replace batteries.
Remote control has not been
pointed correctly to the receiver of
unit.
Turn remote control OFF and repeat
the operation in the correct direction.
There are obstacles (curtains, walls,
etc.) between the remote control
and the unit
Repeat the operation after having
removed the obstacles.
Receiver on the unit or the remote
control is under intense sun
radiation.
Avoid direct sun on the unit, shut
curtains or shades.
Signal transmission is obstructed
by severe interference from an
electromagnetic field.
Avoid sending signals when
computers or household appliances
(Food processors, coffee makers, etc.)
are operating close by cellular or
cordless telephones may also interfere
with the control.
Air conditioner will
not start.
Main supply switch is OFF Switch to ON
Fuses or main switch are blown Replace fuses
Protection against frequent
compressor cycling is ON
Wait for 3 minutes.
Selected temperature is higher than
the room temperature in the cooling
mode.
Correct selected temperature.
Air conditioner does
not cool the room
adequately.
Air flow cannot circulate freely Remove obstructions.
Dirty filters reduce air quantity
circulating.
Clean air filters
Doors and/or windows are open. Close doors and windows
Fan speed has been set to “Low” Set fan speed at high speed.
Selected temperature is higher than
the room temperature in the cooling
mode.
Correct selected temperature.
Incidence of strong sun rays in the
room
Use shut curtains or shades
Unit wrongly selected for the room Redefines adequate unit for the room.
Ice or frost forms on
the indoor coil
Insufficient air circulation Remove instructions in front of the unit
Dirty air filter Clean air filter
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