Error code
F-FAN ERROR
Meaning
The freezer fan motor isn't spinning
Critical
What to do
Why this happens
Possible causes include a defective fan motor, contact issues at MAIN PCB connector terminal CN76 pins 6, 9, and 10, problems with the freezer fan motor connector, a faulty motor wire, or defects in the feedback signal wire.
How to fix it
This one needs a professional technician
SourceSamsung service manual