Error Code SF1
The washer's main computer chip has stopped working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: SF1
What This Means
Micro controller operation failure on the main PCB; Main PCB assembly defective
What actually causes this:
The main circuit board has an internal failure — this is not caused by anything the user did
First Thing to Check
Unplug the washer for 5 minutes and plug it back in — if the error returns, it needs a new main board
Parts Involved
How to Fix
- 1
1. Power cycle the washer — unplug for 2 minutes and plug back in
- 2
2. If the error persists, replace the Assy PCB (main board)
This Error Applies To
Samsung WF56H9100A Series Washers (2018) (2018–present)
Related Error Codes
An internal electronic module cannot communicate with the main board
The WiFi module cannot communicate with the main board
The display screen cannot communicate with the main board
The motor speed controller cannot communicate with the main board
The vibration sensor board has a fault
The washer's main computer chip has stopped working
The washer's main computer chip has stopped working
The washer cannot detect the water level properly