Error Code SF
The washer's main computer chip has failed
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: SF
What This Means
Micro controller operation fail on the Main PCB
What actually causes this:
A power surge or electrical glitch corrupted the main circuit board — sometimes caused by lightning or power outages
First Thing to Check
Unplug the washer for a full minute and then plug it back in — sometimes a power reset clears this error
Parts Involved
How to Fix
- 1
1. Power cycle the washer — unplug for 5 minutes and reconnect
- 2
2. If the error persists, replace the Assy PCB
This Error Applies To
Samsung WF45R6100A Series Washers (2024) (2024–present)
Related Error Codes
The washer's motor can't spin the drum properly
The incoming water is too hot for delicate wash cycles
An internal circuit module can't communicate with the main board
The WiFi module can't communicate with the main board
The door lock mechanism won't engage
The washer detects the door opening while running
The washer's water heater isn't working properly
The washer has too much water in the tub and is overflowing