Carrier Cassette Air Conditioner Fault Codes

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

Carrier Cassette Air Conditioner Fault Codes

Carrier Cassette Air Conditioner Fault Codes


Unit operation and maintenance

Read this instruction manual thoroughly before using the unit.

• This unit complies with UL 1995 directive (Usa and Canada).

• Check that the main power supply voltage and frequency are as

required for the unit; the power source must be sufficient to

operate all other appliances connected to the same line.

Also ensure that local building codes and NEC (National electrical

code) requirements have been followed for the main supply circuit.

• To avoid personal injury or damage to unit,do not service until all

power sources are shut down, locked out, and tagged out.

Failure to do so could result in personal injury or unit damage.

Carrier Cassette Air Conditioner  MANUAL PDF


32 Responses to Carrier Cassette Air Conditioner Fault Codes

  1. Rose Moni Bombe says:

    Hi,my aircon has 9x flashes i
    ts a 50 000 btu Please supply diagnosis booklet.


  2. Rizvy Khan says:

    Hi. I installed a 48,000 btu aircon cassette inverter unit, model’s giving problems.. switches on n after a minute it switches off.. then on again then off… the cycle continues.. when it switches off then indoor n outdoor both switches off.. there’s no error.. is factory fault cos it’s still new.. pliz help

  3. Ronald Kennedy Nyasulu says:

    Hi! I have a 60,000BTU/hr Alliance Cassette split type air con unit. The air con wont start but only blinks the orange light on the display while showing error code E8. Once in a while, when I turn it off at the mains, the indoor fan attempts to run, but only very briefly and stops.

    The fault code list I googled only goes up to E6 and 7. Even these two last codes are said to not have been used and that if they show on the display, one must just replace the board.

    What could be the fault?


    Ronald (Blantyre, Malawi)

  4. John says:

    Hi, our aircon is inverter 40ccv360308
    Ceiling cassette.

    Theres an error code P3 in indoor and P6 in outdoor. Tnx

  5. Aftab ali voltas says:

    E8 erer code for cassette ac what is problum

  6. Rajjat shaikh says:

    Hi, my aircon has 4* flases And cut off unit I don’t know this fault how to solw this problem

  7. Jason says:

    Hallow my air condition is flashing and there is alarm code C3

  8. Kelvin kunda says:

    E8 error code for carrier cassette air conditione, what could be the cause

  9. ORSSA says:

    what is a error EF

  10. pranil says:

    Hi my ac is 48000btu inverter n the compressor runs for 5s not stop

  11. Shyam Mahat says:

    i have Midea Ceiling Cassette Air Conditioner and this is Showing E8 What is the Problem?

  12. Karthik kadamati Electrical says:

    Carrier cassette unit, My problem is Timer & alarm & fan lamp also blinking as per 0.5hz.

    I don’t understand what is the problem, I check froin level and Everything.

    Can you give me the solution.

    I have vedio also for that fault blinking.

  13. marlon roman says:

    What means error code e8 ceilling cassete carrier 3 tr

  14. Fernan ibi says:


  15. Himmatbhai.kadia says:

    Carrier cassette pcb display gaeen led 2time bliking ac working condition ok 30 minit after ac of whats, help me.

  16. mahendrapanda says:

    Carrier split ac motor problem new ac all in stallion time.outdoor motor

  17. satish kh says:

    error P3 in cassetta Peb

  18. BALARAM DALAI says:

    After 2 minats green light will blinking.
    Model _lt-d3681qcp

  19. jagannathganesh says:

    celling cassette 3 times then don’t operate the system how to solve in this problem?

  20. Ronel berania says:

    2x flash green what cause of error alarm

  21. Eshan says:

    Carrier cassette fault codes regular green light on

  22. Chantha says:

    My Air-conditioner has alarm E3 indoor and outdoor it has alarm P6 I don’t know it broken

  23. Mohammed says:

    what does code 3C mean?

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