What does PC44 mean?

The outdoor unit's compressor or fan is detected as having zero speed when it should be running, triggering a protection.

• Compressor or fan motor failure
• Lack of power to the motor
• Control board malfunction

Click steps to track your progress.

1. 1

   Ensure the unit has power.

2. 2

   Check that the compressor and fan are not physically obstructed.

3. 3

   Reset the unit by cycling the power off and on.

4. 4

   If the zero speed condition persists, professional diagnosis of the motor and control system is needed.