Error 442 - Refrigerant charging restriction in heating mode (air temperature over 15°C)

What does 442 mean?

The system is restricting refrigerant charging while in heating mode because the outdoor air temperature is above 15°C, which can affect accurate charging.

• Attempting to charge refrigerant in heating mode above the recommended outdoor air temperature
• Incorrect charging procedure

Click steps to track your progress.

1. 1

   Ensure refrigerant charging procedures are followed precisely according to the manual.

2. 2

   If possible, wait for the outdoor air temperature to fall below 15°C before attempting refrigerant charging in heating mode.

3. 3

   Consult the installation manual for specific refrigerant charging instructions and conditions.