How do I fix error code CFAN-ERROR on a Samsung refrigerators?

1. undefined: Measure DC voltage between MAIN PCB Ground CN40 '15' (W/GRY) and CN40 '13' (S/BLU): should alternate between 7-12V and below 2V 2. undefined: Check pulse signal at CN40 pin 11: should read ~2-3V 3. undefined: Verify ambient temperature is above 66.2°F (19°C) — C-FAN only runs when ambient is warm enough 4. undefined: Replace MAIN PCB if voltage is absent

Samsung Refrigerators2022–present

Error Code CFAN-ERROR

Q: What does error code CFAN-ERROR mean on a Samsung refrigerators?

Compressor area cooling fan is not running Fan motor failure; Bad wiring at CN40; Fan blade obstructed by debris; No rotation feedback pulse to MICOM

Compressor area cooling fan is not running

Moderate

Address soon - your appliance may not work properly

Also displayed as: Indicated via self-diagnosis

What This Means

Fan motor failure; Bad wiring at CN40; Fan blade obstructed by debris; No rotation feedback pulse to MICOM

What actually causes this:

The fan that cools the compressor and condenser in the machine compartment has stopped, which can cause the compressor to overheat.

First Thing to Check

Check the machine compartment at the bottom rear for debris, and confirm the ambient temperature is above 19°C (66°F).

Parts Involved

C-FAN BLDC motor (DC12V, C160N Φ160, 1.32W)MAIN PCB connector CN40

How to Fix

1
Measure DC voltage between MAIN PCB Ground CN40 '15' (W/GRY) and CN40 '13' (S/BLU): should alternate between 7-12V and below 2V
2
Check pulse signal at CN40 pin 11: should read ~2-3V
3
Verify ambient temperature is above 66.2°F (19°C) — C-FAN only runs when ambient is warm enough
4
Replace MAIN PCB if voltage is absent

This Error Applies To

Samsung RF25C5 Series Refrigerators (2022) (2022–present)

Service manual exact match: RF25C5151SR/AAService manual exact match: RF25C5151**Service manual exact match: RF25C5551**Service manual exact match: RF25C5551SR/AA