Error Code UC
There's a power supply problem
Moderate
Address soon - your appliance may not work properly
Also displayed as: UC (9C1/9C2)
What This Means
Power condition fault; Under/over voltage; Plug receptacle used; Main PBA fault
What actually causes this:
Extension cord or outlet voltage issue
First Thing to Check
Plug directly into wall outlet, not extension cord
Parts Involved
How to Fix
- 1
1. Check operating voltage
- 2
2. Connect tester to internal power terminals during Boil/Dry
- 3
3. Check if plug receptacle is used — 1m wire drops up to 10V
This Error Applies To
Samsung WA45T3400A Series Washers (2024) (2024–present)
Related Error Codes
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The motor controller can't communicate with the main board
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The washer can't detect the water level properly
The washer lid is open
The door lock mechanism has failed
The washer's heater is getting too hot