FF (sometimes shown as Er FF) means LG’s freezer fan isn’t turning correctly, and frost buildup around the fan motor is the cause LG documents most often. A quick power reset clears it sometimes, but if FF keeps coming back, LG’s fix is a full manual defrost: unplug the unit, clear out the food and ice, and leave the doors open for at least 8 hours so the frost around the fan can fully melt before you plug it back in.
Brand: LG
LG Refrigerator Error Code FF (Freezer Fan Error)
FF means LG’s freezer fan isn’t turning the way it should, usually because frost has built up around the fan motor.
Meaning
Possible causes
No cause is certain until it has been checked on the appliance.
- Very likely Frost buildup around the freezer fan motor blocking the blade
- Likely A door gasket not sealing fully, letting warm air in and building frost faster than normal
- Possible Fan motor failure
First checks
- Reset power first: unplug the refrigerator or trip its breaker, wait about 5 minutes, then restore power.
- If FF comes back, defrost manually: unplug the unit, remove food and ice, and leave the doors open for at least 8 hours with towels down to catch the melt.
- After defrosting, dry the interior, plug back in, and give it 24 to 48 hours to return to normal temperature before judging whether it worked.
- Check that vents inside aren't blocked and that both doors close completely and sit level.
What not to do
- Restarting the fridge repeatedly without ever doing the full defrost. A quick power cycle only clears frost that hasn't built up much yet.
- Skipping the towel prep before an 8-hour defrost. The melt is more water than most people expect.
An error code varies by brand
The same code can have a different meaning depending on the brand and model. Always check your appliance's manual before acting.
Related problems
- Low
LG Refrigerator Not Cooling: Linear Compressor Failure & Error Codes
If both compartments are warm, the fans run but you don't hear compressor hum, and the display shows an Er code, that…
- Low
Samsung Refrigerator Not Cooling But Freezer Works: Twin Cooling & Common Fixes
Rule out Cooling Off/Demo Mode first. On Twin Cooling models, a warm fridge with a cold freezer usually means ice buildup on…
- Low
Whirlpool Refrigerator Not Cooling: Demo Mode, Condenser Coils & Common Fixes
Rule out Showroom/Demo Mode first since it disables cooling but leaves the interior light on. After that, the condenser coils and door…
Related guides
When to call a professional
If the simple checks didn’t solve it, if the fix involves electrical wiring, gas, or the refrigerant circuit, or if you have any doubt at all: stop there and hand the appliance to a qualified repair professional.