Error Code SF1
Your washer's main computer has a critical failure
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: SF1
What This Means
Microcontroller operation failure on Main PCB; Main PCB component failure
What actually causes this:
The main control board's processor failed — this is an internal electronics failure
First Thing to Check
Unplug the washer for 5 minutes and plug it back in — if the error returns, the board needs replacement
Parts Involved
How to Fix
- 1
1. Replace the Assy PCB (main board)
This Error Applies To
Samsung WF42H5200A Series Washers (2014) (2014–present)
Related Error Codes
Your washer's main computer has a critical failure
Your washer is getting too much power from the outlet
The WiFi module in your washer lost its connection to the main board
The control panels inside your washer aren't communicating with each other
The display panel lost its connection to the main control board
One of the buttons on your washer is stuck
The water heater in your washer isn't working properly
Your washer door isn't closing or locking properly