Error Code AC
The control boards can't communicate
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC
What This Means
Signals not sensed between sub/main PBAs; Incorrect wire connections; Sub PBA short-circuited from moisture
What actually causes this:
A wire between control boards came loose
First Thing to Check
Unplug for 60 seconds and try again
Parts Involved
How to Fix
- 1
1. Check wire connections and terminal contacts between sub and main PBAs
- 2
2. Check for disconnected wires
- 3
3. Check if sub PBA is short-circuited from moisture
- 4
4. If main PBA communication circuit is faulty, replace it
This Error Applies To
Samsung WA45T3400A Series Washers (2024) (2024–present)
Related Error Codes
The washer isn't getting enough power
The motor controller can't communicate with the main board
The clutch sensor is giving incorrect readings
The washer is getting too much power
The washer can't detect the water level properly
The washer's motor isn't working
The washer isn't filling with water
The incoming water is too hot