Carrier Cassette AC Error Codes

Carrier Cassette AC Error Codes

Carrier Cassette AC Error Codes

Once the failure occurs with the indoor unit in operation, the green unit LED flashes at intervals of 0.5 seconds. Fault code is subtracted from the number of green LED flash, blocking unit operation. Between one flash cycle and the next one, a pause of 5 seconds ends.

Carrier Cassette Air Conditioner Fault Code
Carrier Cassette Air Conditioner Fault Code
Carrier fault code and troubleshooting

Once the failure occurs with the indoor unit in operation, the green unit LED flashes at intervals of 0.5 seconds. Fault code is subtracted from the number of green LED flash, blocking unit operation. Between one flash cycle and the next one, a pause of 5 seconds ends.

Error code description

3 Room Air Sensor Fault

2 Condensate Discharge Pump

4 indoor unit coil sensor fault

6 Sieve

7 outdoor unit failure

10 corrupt

11 card serial number damaged

12 address / field incomplete

13 gas flow distributor corrupted

14 outdoor air thermistors

Carrier cassettes perform selected functions
Carrier cassettes perform selected functions

Air conditioner will not start:

The main switch is off, keep the switch in the ON position.
The fuses on the main switch are ignited; Change fuses. (This operation should be performed only by qualified personnel).
Wait for 3 minutes: Protection against frequent compressor bicycles is on.
The selected temperature is higher than the room temperature (or lower in heating mode).
The unit emits unpleasant odor:

Unpleasant odors may accumulate on the air filter and then become scattered throughout the room during air conditioner operation. Turn off the unit and contact an authorized service center to clean the filter. Restart the unit in ventilation (fan only) mode and open the windows to change room air.

The unit makes strange noises:

Sometimes the unit makes strange noises at start-up, during operation or when it shuts down. These are usually due to the effect of temperature changes on plastic parts.

The air conditioner is not supplying sufficient cooling (or heating):

Air cannot circulate freely.
Dirty filters reduce the amount of air.
The filter should be cleaned only by skilled personnel.
Doors and / or windows open.
The fan speed is set to ‘low‘.
The direction of air flow is not correct for optimum ventilation.
The selected temperature is incorrect.
Shining P (Green LED) indicator:

system malfunction. Contact service organization after ensuring:

Air circulation is not interrupted.
The coil of the external unit is not interrupted and causes severe lack of air circulation.
Condensate drainage tube is not obstructed.
As Fault Code to be reported after sale

Q (red LED) indicator is illuminated:

In heating mode, the LED switches to indicate an active defrost condition.

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