How do I fix F90 error (power factor correction) on my Panasonic CS-S12NKUA?
- RRichard ParkerSep 4, 2025
The F90 error on your Panasonic Air Conditioner relates to power factor correction protection. This can be caused by: * A DC voltage peak due to a power supply surge, so stabilize or replace the power supply. * A DC voltage peak due to non-uniform compressor windings, so inspect and service the compressor. * A faulty outdoor PCB, so replace it.