What FF means
The freezer fan isn't working, often because ice is blocking it. The compressor then works harder and the freezer warms up.
Also shown as: Er FF, E FF, depending on the model.
Likely causes
- Ice buildup around the fan
- Fan motor fault
Safe first checks
- Unplug the refrigerator for about 5 minutes and plug it back in.
- If the code returns, move your food to a cooler, unplug the fridge and leave the doors open so ice around the fan can melt, then restore power.
When to stop
If the code returns after defrosting, request service.
Checked against: LG USA Support: LG Refrigerator digital and analog error codes; LG USA Support: How to fix ER FF and ER rF error codes. Codes can differ by model and year, so confirm with your owner's manual.