Fault code 22 — The defrosting sensor fault

What does 22 mean?

The defrosting sensor has a fault, likely related to its wiring connection, the sensor itself, or the main PCB's sampling circuit.

• The wiring of the suction temperature sensor is connected loosely
• The suction temperature sensor fails
• The Main PCB sampling circuit is abnormal

Click steps to track your progress.

1. 1

   Reconnect the wiring of the suction temperature sensor.

2. 2

   Replace the suction temperature sensor if the connection is secure.

3. 3

   If the problem persists, the outdoor Main PCB may need replacement.