Error Code 21
Freezer fan is not spinning or signal is lost
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: F-Fan Error
What This Means
Fan motor bearing failure; Feedback signal wire disconnected; Fan motor wire slipped from connector; Contamination blocking fan blade; Fan motor coil failure
What actually causes this:
Fan motor bearing failure or wiring disconnection
First Thing to Check
Listen for fan motor when compressor runs; check DC BLU1 connector
Parts Involved
How to Fix
- 1
Check voltage between Case Connector DC BLU1 #3 and #4
- 2
Expected voltage should be within 7V to 12V
- 3
Listen for fan motor operation during test cycle
- 4
Check feedback signal from fan motor
- 5
Inspect fan blade for obstructions
This Error Applies To
Samsung BRF425200A Series Refrigerators (2017) (2017–present)
Related Error Codes
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FlexZone compartment is not maintaining proper temperature
Rear cabinet heater element is broken or disconnected