The function of determining failures is embedded in the program of air conditioners. The system is able to correct some violations by itself, but this does not always help, therefore it is advisable to have an instruction manual at hand.
During the self-diagnosis mode, the orange and green diodes blink simultaneously. To read the code, you need to count the number of blinking indicators. So, the orange indicator indicates the number of tens, and the green indicator indicates the number of units. First, the orange blinks, then a break for two seconds and the green blinks. After that, a break for another four seconds. Thus, the error indications for the Carrier air conditioners are repeated until the problem has been fixed.
Example, if, according to the instructions, the error code of the air conditioner is 24 Carrier:
- First, the orange indicator blinks 2 times;
- After that, blinking stops for 2 seconds;
- The green indicator flashes 4 times;
- A break for four seconds.
| Air conditioner error code Carrier | Orange indicator (number of blinks) | Green indicator (number of blinks) | Decryption error code Carrier air conditioning |
| 2 | – | 2 | Room temperature sensor malfunctioning |
| 3 error conditioner Carrier | – | 3 | The function of the temperature sensor of the heat exchanger of the indoor module is impaired |
| 6 | – | 6 | Damage to the reverse valve of the outdoor module |
| 8 | – | 8 | Damage to the fan motor of the indoor unit |
| 9 error conditioners Carrier | – | 9 | No power supply to indoor unit |
| 11 | 1 | 1 | The condensate pump does not work or the capacity for it is full |
| 12 error conditioner Carrier | 1 | 2 | Internal module board malfunction |
| 13 | 1 | 3 | General board malfunction |
| 14 | 1 | 4 | No response from the general board |
| 15 | 1 | 5 | The temperature sensor of the heat exchanger of the internal module is broken |
| 18 | 1 | 8 | The function of the board of the external module is broken |
| 20 | 2 | – | Violation of the module position detection function |
| 21 Air Conditioner Error Carrier | 2 | 1 | Broken electrical sensor of the external module |
| 22 | 2 | 2 | The temperature sensor of the external heat exchanger is broken |
| 23 | 2 | 3 | Discharge temperature sensor broken |
| 24 | 2 | 4 | External module fan does not work |
| 26 | 2 | 6 | Outage module malfunction |
| 27 | 2 | 7 | Outdoor unit compressor stopped |
| 28 | 2 | 8 | Discharge temperature too low or too high |
| 29 | 2 | 9 | Broken external module compressor |
| 31 | 3 | 1 | The outdoor unit is too high pressure |
If the air conditioner gives an error code, you must write it on a piece of paper. Then disconnect the device from the power supply and call the wizard from the after-sales service.
Typically, with minor errors, cassette air conditioners Carrier can cope on their own.
But if this did not happen, you should not try to open the device without the presence of a specialist who can accurately localize the error codes of Carrier air conditioners.
