F44 -01 — Inverter protection (overheating of IPM board or main board malfunction)

What does F44 -01 mean?

This error indicates the inverter protection has been triggered due to overheating of the IPM transistor board or a malfunction of the outdoor unit's main board.

• Overheating of the IPM transistor board.
• Malfunction of the outdoor unit's main board.
• Poor ventilation around the outdoor unit.

Click steps to track your progress.

1. 1

   Ensure the outdoor unit has adequate ventilation and is not obstructed.

2. 2

   Check for dust or debris on the IPM board and heatsink.

3. 3

   A professional diagnosis may be needed for board issues.

4. 4

   Turn off the unit, unplug it, wait 30 seconds, and plug it back in to reset.