Er CF Serious Moderate DIY

LG Refrigerator Er CF — Condenser fan motor feedback fault

LG Refrigerator · Error code Er CF

What Er CF Means

The condenser fan at the back/bottom of the cabinet didn't return its speed feedback signal for the required time (typically more than 65 seconds during operation). Without it, the compressor will eventually overheat and shut down on the high-side cutout.

Symptoms

  • Er CF on display
  • Refrigerator and freezer warming together
  • Hot exterior at compressor area
  • Buzzing or no airflow noise from back/bottom of unit
  • Compressor short-cycles or shuts off

Common Causes

1
Failed condenser fan motor

Bearings seized, blade stalled, or BLDC electronics failed.

2
Debris blocking fan

Pet hair / dust mat in the condenser area stalls the blade.

3
Disconnected/damaged fan harness

Loose connector at the fan or main board.

4
Main control board

Drive or feedback circuit failed.

How to Fix It

  1. Unplug the refrigerator and pull it out from the wall.
  2. Remove the rear lower access panel to expose the condenser and fan.
  3. Vacuum out dust/pet hair from the condenser coil and around the fan.
  4. Spin the fan by hand — should turn freely. If stiff, replace the fan motor.
  5. Inspect and reseat the fan harness connector to the main board.
  6. If a new fan motor doesn't clear Er CF, suspect the main PCB.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Condenser fan motor View on Amazon→ Common replacement Condenser coil brush View on Amazon→

More LG Refrigerator Codes

22 22 — Compressor relay / inverter control fault 33 33 — Compressor / defrost test fault 67 67 — Door open / not fully closed 88 88 — Power-on display test (not a fault) Er CF Er CF — Condenser Fan Fault Er CO Er CO — Compressor / Communication Fault

All LG codes → All refrigerator codes →

Verified against manufacturer documentation: lg.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.