How do I fix error code E CF on a LG refrigerators?

1. undefined: Step 1: Reset unit and enter Test Mode 1 (press test button 1 time). 2. undefined: Step 2: Measure fan motor supply voltage at CON4 pins 24-23 — expected 11.4 to 12.6V; if absent, replace Main PCB. 3. undefined: Step 3: Verify fan is rotating — if not, rotate fan by hand. 4. undefined: Step 4: Rotate fan blade by hand — if sticky, replace condenser fan motor. 5. undefined: Step 5: Measure fan feedback voltage at CON4 pins 22-23 — expected NOT 0 or 5V; if 0 or 5V, replace fan motor. 6. undefined: Step 6: Measure fan PWM voltage at CON4 pins 21-23 — expected NOT 0 or 5V; if 0 or 5V, replace Main PCB. 7. undefined: Step 7: If all checks are normal, explain to customer.

LG Refrigerators2023–present

Error Code E CF

Condenser Fan Motor Error — BLDC Fan Motor for Machine Room

Moderate

Address soon - your appliance may not work properly

What This Means

No feedback signal from condenser fan motor for more than 65 seconds; Fan blade obstructed or motor mechanically stuck; Defective Main PCB condenser fan output

How to Fix

1
Step 1: Reset unit and enter Test Mode 1 (press test button 1 time).
2
Step 2: Measure fan motor supply voltage at CON4 pins 24-23 — expected 11.4 to 12.6V; if absent, replace Main PCB.
3
Step 3: Verify fan is rotating — if not, rotate fan by hand.
4
Step 4: Rotate fan blade by hand — if sticky, replace condenser fan motor.
5
Step 5: Measure fan feedback voltage at CON4 pins 22-23 — expected NOT 0 or 5V; if 0 or 5V, replace fan motor.
6
Step 6: Measure fan PWM voltage at CON4 pins 21-23 — expected NOT 0 or 5V; if 0 or 5V, replace Main PCB.
7
Step 7: If all checks are normal, explain to customer.