4210 - Compressor overcurrent interruption

What does 4210 mean?

The system has detected an excessive electrical current draw by the compressor, leading to an overcurrent protection interruption and system shutdown. This code will appear on the remote controller or the outdoor unit LED.

• Compressor malfunction (e.g., short circuit or winding issue).
• Overload condition on the compressor.
• Issue with the power supply or control board.

Click steps to track your progress.

1. 1

   Note the 4210 code displayed on your remote controller or the outdoor unit's LED.

2. 2

   Turn off the main power supply to the outdoor unit at the circuit breaker.

3. 3

   Wait at least 1 minute after LED1 and LED2 on the outdoor circuit board go out, then turn the main power supply back on.

4. 4

   If the error persists, contact a qualified service technician to inspect the compressor and electrical system.