Error Code SF3
The washer's main computer chip has malfunctioned
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: SF3
What This Means
Micro Controller operation failure; Main PCB defect; Power surge or electrical anomaly
What actually causes this:
The main control board's processor failed, possibly from a power surge
First Thing to Check
Unplug the washer for 5 minutes, then plug it back in — if the error returns, it needs a new control board
Parts Involved
How to Fix
- 1
1. Unplug the washer and wait 5 minutes
- 2
2. Plug back in and check if error clears
- 3
3. If error persists, replace Assy PCB
This Error Applies To
Samsung WA50M7450A Series Washers (2018) (2018–present)
Related Error Codes
The vibration sensor board is sending bad data
The washer's WiFi module isn't communicating properly
The washer's display screen isn't communicating properly
The washer's motor controller isn't communicating properly
The vibration sensor board has a problem
The vibration sensor board has failed
The washer's main computer chip has malfunctioned
The washer's main computer chip has malfunctioned