Error Code F4
Freezer section is not getting circulation air flow
Moderate
Address soon - your appliance may not work properly
Also displayed as: F4 LED blink
What This Means
Fan motor feedback signal line contact error; Fan motor wiring separation; Fan motor mechanical failure; Motor bearing seize; Fan blade jam or obstruction
What actually causes this:
Ice builds up in front of the fan, or the motor bearings wear out from continuous use
First Thing to Check
Check if there is ice buildup blocking the fan opening in the freezer evaporator area
Parts Involved
How to Fix
- 1
Measure voltage between MAIN PCB CN76-3 (Yellow) and CN76-1 (Gray)
- 2
Voltage should be between 7V and 12V during fan operation
- 3
Listen for fan noise when refrigerator is in cooling mode
- 4
Check for ice blockage at fan inlet
- 5
Verify motor wiring is not pinched or disconnected
This Error Applies To
Samsung RF221NCTAS Series Refrigerators (2012) (2012–present)
Related Error Codes
Water supply heater for ice maker is not working
Defrost system cannot monitor freezer coil temperature
Ice maker temperature sensor is not working properly
Ice maker is not able to make or dispense ice
Refrigerator compressor will not operate or is operating abnormally
Refrigerator cannot sense the room temperature
Fresh food compartment is not getting enough cold air circulation
Fresh food compartment temperature sensor is malfunctioning