LG Refrigerator Error Er RF: Fan Motor Failure

The Logic Verdict

This is rarely a motherboard issue. It is almost always ice buildup blocking the fan or a dead fan motor.

• The Test: If you unplug the fridge for 24 hours (manual defrost) and it works for 3 days before failing again, it’s a defrost heater issue, not the fan itself.

What It Means

Er RF = Refrigerator Fan Error. The main control board cannot detect a signal from the fan motor in the fridge compartment.

Common Causes

1. Ice Buildup: The fan is physically stuck in ice (common in humid climates).
2. Motor Burnout: The fan motor has failed electrically.

Step-by-Step Fix

1. Force Defrost: Unplug the unit for 24 hours with doors open. (The “Lazy Fix”).
2. Access the Fan: Remove the lower shelves and the back panel inside the fridge (usually 2 screws).
3. Spin Test: Spin the fan blade. If it’s stiff, the motor is seized. Replace it.
4. The Steamer Trick: If you see ice in the vents, use a handheld steamer to melt it quickly without melting the plastic liner (hairdryers are risky).

Parts You Might Need

• LG Evaporator Fan Motor EAU64824401