Error Code 9C1
The washer isn't getting enough electrical power
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 9C1
What This Means
Under voltage supplied to the washer; Connecting wire longer than 1m causing voltage drop (up to 10V momentary drop); Unstable home power supply; Main PBA fault (sometimes)
What actually causes this:
The washer is plugged into an extension cord or shares a circuit with other large appliances
First Thing to Check
Make sure the washer is plugged directly into a wall outlet — not an extension cord or power strip
Parts Involved
How to Fix
- 1
1. Check the consumer's power conditions and make sure operating voltage is correct
- 2
2. Connect a tester to the internal power terminals during the Sanitize Cycle and observe operation
- 3
3. Check whether the power cord or extension cord is too long
- 4
4. Verify that the outlet provides stable 120V
- 5
5. If voltage is stable and error persists, replace the Main PBA
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
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