Error code blinking on display.
Refer Sticker on cover plate. Call
Carrier Service helpline.
Air conditioner not starting
Main power supply is OFF.
Fault in outdoor unit (Red LED
is blinking on voltage scanner)
*Voltage scanner is applicable
for selected models only.
Check the main supply and turn it
ON.
Wrong field wiring connections.
Call Carrier Service helpline.
Indoor unit is ON but no
cooling or low cooling.
Set temperature is higher than
the room temperature.
Doors and windows are open.
Selected mode is FAN mode.
There is dust contamination on
filter.
Refrigerant is lesser than the
required.
Room temperature sensor is
faulty, or coil temperature
sensor is faulty.
Outdoor temperature is very
high.
Change the set temperature; it
must be lower than the room
temperature.
Close the doors and windows and
keep the room closed.
Select COOL mode with High fan
speed. Let the outdoor ambience
be normal.
Filter cleaning or servicing.
Call Carrier service helpline
Main power supply is OK.
Unit was running but
suddenly turned OFF, also
remote display disappeared.
ON/OFF timer is set for auto
start /stop.
Check cordless remote and
deactivate the timer settings.
Call Carrier service helpline.
Blower runs and alarm on
changing fan speed
Deactivate the sleep mode.
There is fault in IDU blower
motor.
If blower speed is not toggle by
using remote control, then call
Carrier service helpline.
Unpleasant or foul smell.
Dirty filters. Unpleasant smell
in room. Smoke in room
Clean the air filter. Keep the room
neat and clean. Ensure proper
ventilation in room.
There can be abnormal noise
due to improper installation on
location or mounting.
Call Carrier service helpline
Unit trips or start/stop
frequently
Voltage fluctuation.
Compressor malfunction.
Refrigerant content is improper
(too less or too much).
Flow of refrigerant is blocked.
Check the error code indication.
Call Carrier service helpline
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