Trouble Shooting Tips - Carrier Elite Plasma Green 53QHET12-708J Owner's Manual

13. TROUBLE SHOOTING
If you have problems with your room air conditioner, check this trouble-shooting guide before contacting
Carrier or Carrier certified dealer.
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 Carrier or Carrier certified dealer.
TROUBLE
After batteries have
been placed into the
remote control, the
remote control can
not operate the air
conditioner.
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.
Air conditioner will
not start.
Air conditioner does
not cool the room
adequately.
Air conditioner stops
during cooling
Ice or frost forms on
the indoor coil during
cooling
POSSIBLE CAUSES
Batteries are exhausted or have the
wrong polarity.
Main switch is OFF.
Remote control batteries are exhausted.
Remote control has not been pointed
correctly to the receiver of unit.
There are obstacles (curtains, walls, etc.)
between the remote control and the unit
Receiver on the unit or the remote
control is under intense sun radiation.
Signal transmission is obstructed by
severe interference from an
electromagnetic field.
Main supply switch is OFF
Fuses or main switch are blown
Protection against frequent compressor
cycling is ON
Set temperature is higher than the room
temperature in the cool mode or lower
than the room temperature in heat mode.
Air flow cannot circulate freely
Dirty filters reduce air quantity
circulating.
Doors and/or windows are open.
Fan speed has been set to "Low"
Set temperature is high in the cool mode. Correct selected temperature.
Incidence of strong sun rays in the room Use shut curtains or shades
Unit wrongly selected for the room
TIMER OFF function is working
Room temperature is lower than set
temperature
Insufficient air circulation
Dirty air filters
Replace batteries or check
polarity.
Switch it to ON position.
Replace batteries.
Turn remote control OFF and
repeat the operation in the
correct direction.
Repeat the operation after having
removed the obstacles.
Avoid direct sun on the unit, shut
curtains or shades.
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.
Switch to ON
Replace fuses
Wait for 3 minutes.
Correct set temperature.
Remove obstructions.
Clean air filters
Close doors and windows
Set fan speed at high speed.
Redefines adequate unit for the
room.
Cancel TIMER OFF function
Normal operation
Remove obstructions in front of
the unit
Clean air filters
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SOLUTIONS