What does 446 mean?

Fan1 (typically an outdoor unit fan) has failed to operate correctly, which can lead to overheating and reduced system performance.

• Faulty fan motor
• Obstructed fan blades (debris, ice build-up)
• Wiring issue to the fan motor
• Control board problem

Click steps to track your progress.

1. 1

   Power off the unit and check Fan1 for any obstructions preventing its rotation (e.g., leaves, ice).

2. 2

   Ensure the fan blades are clean and undamaged.

3. 3

   Verify power connections to Fan1; if the fan motor is faulty, contact a qualified technician.