LG Refrigerator Er FF — What It Means & How to Fix It
Er FF is LG's freezer evaporator fan fault: the fan that moves cold air through the freezer isn't turning — usually jammed by frost after a defrost, and an unplug-and-thaw reset fixes many cases.
What this code means
Er FF names the evaporator fan in the freezer compartment of LG refrigerators. The board expects that fan to spin and confirm; when ice bridges over the blades after a defrost, a package presses into the grille, or the motor fails, the fan stalls and Er FF flashes. Both the freezer and the fresh-food section warm, because air stops circulating past the evaporator even though the compressor keeps running.
LG displays the freezer fan fault as Er FF in the current display generation; the arc of the code is the same on models that show it slightly differently. The long-unplug procedure below is LG's own remedy for frost-related fan faults — it acts as a defrost reset. The model number is on the left wall of the fresh-food section.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Ice or frost jamming the freezer fan after a defrost | Very common | Yes — unplug to thaw |
| Packages, ice bins or a drawer pressed against the fan vent | Common | Yes — no tools |
| Failed freezer fan motor | Common | No — technician job |
| Fan wiring or control board fault | Less common | No — technician job |
What you can try yourself
- Unplug the refrigerator for 30–60 minutes and leave the freezer door ajar — this lets frost that has jammed the fan melt, LG's own pre-service remedy for fan-family errors.
- After it thaws, check the vents at the back of the freezer for visible frost or anything pressed against the grille.
- Plug the refrigerator back in and give it a full day. A thawed, freed fan usually means the code stays gone.
- If Er FF returns, the fan motor, its harness, or the board driving it is the suspect — a technician checks the tachometer signal before ordering parts.
Seeing the symptom rather than the code? Refrigerator not cooling: checks that apply across brands.
When to call a technician
- Er FF returns shortly after a proper long-unplug thaw — the motor itself is likely failing.
- You hear grinding or a rapid clicking from the freezer back wall when the fan should run.
- The freezer runs clearly warm while the compressor cycles constantly.
Typical professional repair cost: Freezer fan motor replacement typically runs $120–$250 including labor; defrost-system work that keeps jamming the fan runs $150–$300.
Frequently asked questions
Why does an LG freezer fan get jammed in the first place?
Defrost cycles leave the evaporator wet and cold; any frost that survives can bridge the gap between the evaporator and the fan grille and freeze solid. Door-open time adds humidity that feeds the frost — which is why both a defrost and a thaw fix are paired here.
How long should I leave an LG refrigerator unplugged?
Purposefully longer than a normal reset: aim for 30–60 minutes with the freezer door ajar. That window is what actually lets ice melt off the fan, and it is the difference between fixing the cause and just clearing the code.
Will Er FF hurt my food if I ignore it?
Left alone, the freezer slowly drifts toward refrigerator temperature while the compressor keeps working — food quality and energy use both suffer. It is worth the half-hour thaw or the service call.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related LG codes
- LG Refrigerator Er rF Er rF is LG's fresh-food evaporator fan fault: the fan serving the refrigerator section isn't turning, so the fridge compartment runs warm even when the freezer stays cold.
- LG Refrigerator dS dS is LG's defrost sensor fault: the sensor on the freezer evaporator reads open or shorted, so the board can't run defrost timing correctly and frost builds over time.
- LG Refrigerator dH dH is LG's defrost-heater timeout: the defrost cycle ran past its limit (about an hour) without the evaporator thawing, so the heater or the sensor reading it is at fault.
- LG Refrigerator CL E CL E is LG's low-refrigerant warning: the sealed system has lost charge, so cooling gradually weakens. There is no safe DIY step — refrigerant work belongs to a licensed technician.
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