Error Code 21
Cold air cannot circulate in freezer compartment
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 21
What This Means
Loose fan motor connector at CN76-3; Motor winding open circuit; Motor bearing failure; Inverter PCB power delivery failure
What actually causes this:
Fan motor connector came loose or motor stopped working
First Thing to Check
Open the freezer and listen - the fan should make a slight humming sound
Parts Involved
How to Fix
- 1
Check voltage at MAIN PCB CN76-3 (Yellow) to CN76-1 (Gray)
- 2
Expected voltage: 7V to 12V DC
- 3
Verify connector is fully seated
- 4
Listen for fan motor noise during defrost
This Error Applies To
Samsung RF265BEA Series Refrigerators (2016) (2016–present)
Related Error Codes
Refrigerator cannot detect internal humidity levels
Freezer defrost cycle cannot detect when ice buildup has melted
Compressor motor is not spinning and cooling system cannot function
Refrigerator defrost cycle cannot detect when ice has melted
Freezer temperature cannot be measured or controlled
Refrigerator temperature cannot be measured or controlled
Pantry drawer temperature cannot be monitored or controlled
Frost cannot be removed from refrigerator evaporator coil