F90 — Power factor correction (PFC) circuit protection

What does F90 mean?

The power factor correction circuit is malfunctioning. This error has occurred multiple times within a short period.

• Outdoor PCB is faulty

Click steps to track your progress.

1. 1

   Check the power supply to the outdoor unit.

2. 2

   Inspect the outdoor PCB for any visible signs of damage.

3. 3

   If the PCB is suspected to be faulty, it will require professional replacement.