ER FF means the freezer fan motor is not operating normally, most often because frost has built up around it. ER IF is the same kind of fault specific to the ice maker fan. Both are frequently cleared by defrosting the unit and resetting power rather than replacing a part.
What ER FF and ER IF mean
LG refrigerators monitor their fan motors and report when one is not turning as expected. ER FF covers the main freezer fan; ER IF covers the fan specifically serving the ice maker. In both cases, ice or frost accumulating around the blade is the most common reason a fan stops turning freely.
How to fix it
- Power reset
Unplug the refrigerator, or trip its dedicated circuit breaker, and leave it off for about five minutes before restoring power.
- Defrost the unit fully
Open both doors and leave them open for at least eight hours to let any built-up frost around the fan clear completely — this is LG’s own recommended step for ER FF.
- Check the door seals
Clean the gaskets and remove anything preventing a tight seal. A door that is not sealing lets in warm, moist air that refreezes around the fan and causes the fault to return.
- For ER IF, allow extra time
Unplug for five to ten minutes specifically to let the ice maker fan area clear, then restart and monitor.
When to call a professional
If the same code repeats after a full defrost, reset and confirmed door seal, have an LG-authorised technician inspect the fan motor and its wiring for an accurate diagnosis.
Stop and call a qualified appliance technician or electrician if you find scorched or melted wiring, smell burning, see water that has reached electrical components, or if the fault returns immediately after a repair. Never bypass a safety device — thermal fuses, door interlocks and flood switches fail for a reason, and defeating one converts a broken appliance into a fire or flood risk.
