Error Code C_FAN_ERROR
Condenser cooling fan not operating or speed signal lost
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: C FAN ERROR
What This Means
Fan motor mechanical failure; Bad connector contact at CN40 pin 11; Missing pulse signal from motor rotation; Ice or dust blockage in fan; Wiring disconnection from PCB; MAIN PCB relay or control circuit failure
What actually causes this:
The back cooling fan is blocked by dust or not receiving power signal, reducing condenser cooling efficiency
First Thing to Check
Listen for fan operation; check for dust buildup in machine compartment; verify room temperature above 66F
Parts Involved
How to Fix
- 1
Check CN40 connector insertion at pin 11
- 2
Verify DC 7-12V supply at CN40 pins 13 (S/BLU) and CN40 pin 15 (W/GRY)
- 3
Listen for condenser fan motor rotation
- 4
Measure pulse signal at CN40 pin 11 (should toggle during rotation)
- 5
Inspect fan for dust buildup or mechanical obstruction
- 6
Check ambient temperature above 66.2F/19C
Other Error Codes for RF28T5021B1
Refrigerator compartment temperature sensor is disconnected or dead
Internal humidity sensor has failed or is disconnected
Defrost sensor on freezer evaporator is failed or disconnected
Freezer fan motor is not running or not sending feedback
Supply voltage to compressor is too high
Freezer temperature sensor is failing or disconnected
Ice maker temperature sensor in freezer is failed or unplugged
External room temperature sensor is failed or disconnected