FFSerious
LG Refrigerator FF Error Code
The freezer fan motor has failed or is not receiving power. This is similar to F21 but may appear on some models.
Common causes
- Fan motor burnt out
- Loose connector
- Main board failure
How to fix it
- Unplug and test fan motor resistance (should be ~100-200 ohms); if open, replace.
- Check for 12V DC at connector when unit is on.
- If fan is good but no voltage, check wiring and main board.
⚠ When to call a pro: Call a technician if motor replacement does not fix or if board is suspected.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.