LG Refrigerator Error Code Er FF: Freezer Fan Failure
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What Error Code Er FF Means
The Er FF code means the main control board is not receiving a rotational signal from the freezer evaporator fan motor. The fan is either stalled, electrically failed, or its wiring harness is damaged. Without this fan, cold air cannot circulate through the freezer and fresh food compartments. Temperatures rise fast, usually within a few hours.
Common Causes
Ice buildup around the evaporator fan blade
A failed defrost cycle lets frost accumulate on the fan blade and shroud. The blade physically cannot spin. This is the most common cause of Er FF.
Failed evaporator fan motor
The fan motor windings burn out over time. The motor receives voltage but produces no rotation. Typical lifespan is 8-12 years.
Damaged wiring harness or connector
The wire harness running from the main PCB to the fan motor gets pinched by the evaporator cover or cracked by repeated temperature cycling. A broken wire kills the signal to the board.
Faulty main control board
The control board itself fails to read the fan feedback signal even though the motor runs fine. This is less common but does happen on boards with corroded solder joints.
How to Fix It
- 1
Reset the refrigerator
Unplug the refrigerator from the wall outlet. Wait 5 minutes. Plug it back in. If the code clears and the fan starts spinning, monitor it for 24 hours to confirm the fix holds.
Always unplug the unit before working on any internal components.
- 2
Check for ice buildup on the fan
Open the freezer door. Remove the rear evaporator cover panel by unscrewing the Phillips-head screws (usually 4-6 screws). Look at the fan blade behind the cover. If ice surrounds the blade, use a hair dryer on low heat to melt it. Keep the dryer 6 inches from plastic parts to avoid warping. Reinstall the cover and restore power.
- 3
Spin the fan blade by hand
With the evaporator cover removed and the unit unplugged, try spinning the fan blade with your finger. It should rotate freely with minimal resistance. If it grinds, wobbles, or locks up, the motor bearings are shot. Replace the evaporator fan motor (LG part number varies by model β check your model tag inside the fresh food compartment).
- 4
Test the fan motor with a multimeter
Disconnect the fan motor wire harness. Set your multimeter to the 200-ohm range. Place the probes on the two motor terminals. A good motor reads between 100 and 300 ohms. An open-line (OL) reading or zero ohms means the motor is dead. Replace it.
Confirm the unit is unplugged before testing any electrical component with a multimeter.
- 5
Inspect the wiring harness
Follow the wire harness from the fan motor connector back toward the main control board. Look for pinched, frayed, or cracked wires. Pay close attention where the harness passes through the evaporator cover cutout. Repair any damaged wires with heat-shrink butt connectors rated for low-temperature use.
When to Call a Professional
Call a technician if the fan motor tests bad, if the code returns after clearing ice, or if you suspect the main control board. TruePro charges a $59 diagnostic fee that gets credited toward your repair. We back all work with a 90-day warranty on parts and labor. Call 877-378-3111 for same-day service in LA County, Orange County, or Ventura County. First-time customers save 15% on labor with code NEW15.
Estimated Repair Cost
| Option | Estimated Cost |
|---|---|
| DIY (parts only) | $40 - $120 |
| Professional repair | $180 - $350 |
DIY cost covers a replacement evaporator fan motor. Pro range includes diagnosis, the motor, and labor at Los Angeles area rates. Main control board replacement pushes the upper end to $400-$550.
See full refrigerator repair cost breakdown βLG Refrigerator Er FF β FAQ
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