How do I fix error code 21 on a Samsung refrigerators?

1. undefined: Check voltage between Main PCB CN20-16 and CN20-18 should be 7V~12V 2. undefined: Verify connector is fully inserted 3. undefined: Check for motor rotation signal at CN20-14

Samsung Refrigerators2021–present

Error Code 21

Q: What does error code 21 mean on a Samsung refrigerators?

Freezer fan not spinning Loose connector at CN20-16 and CN20-18; Defective fan motor; Bad motor winding

Freezer fan not spinning

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: Error 21

What This Means

Loose connector at CN20-16 and CN20-18; Defective fan motor; Bad motor winding

What actually causes this:

Fan stuck from ice or motor bearing failure

First Thing to Check

Check if fan blade is frozen or blocked

Parts Involved

BLDC Fan Motor (FRE)Main PCB CN20

How to Fix

1
Check voltage between Main PCB CN20-16 and CN20-18 should be 7V~12V
2
Verify connector is fully inserted
3
Check for motor rotation signal at CN20-14

This Error Applies To

Samsung RF262BEAES Series Refrigerators (2021) (2021–present)

Service manual exact match: RF262BEAESGService manual exact match: RF262BEAESR

Related Error Codes

Compressor drawing too much current

Compressor motor not turning

Input voltage too low

Input voltage too high

Refrigerator defrost heater not working

Display panel not communicating with main board

Refrigerator is too warm

Freezer temperature sensor not responding

Need more help with your Samsung refrigerators?