Error Code AC
The washer's control boards cannot talk to each other.
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC
What This Means
Signals between sub and main PBAs are not sensed due to communication failure; Incorrect or loose connector connections between sub and main PBAs; Faulty soldering on sub PBA control panel; Sub PBA is short-circuited due to moisture; Incorrect wire connections between sub and main PBAs; Main PBA communication circuit fault
What actually causes this:
A wire connector between the display panel and the main control board has come loose, often from vibration over time.
First Thing to Check
Try unplugging the washer for 2 minutes and plugging it back in to reset the control boards.
Parts Involved
How to Fix
- 1
1. Check the connector connections between the sub and main PBAs carefully
- 2
2. Check for incorrect or loose connections
- 3
3. Remove the sub PBA C/Panel and check for any faulty soldering
- 4
4. Check whether the sub PBA is short-circuited because of moisture
- 5
5. Check wire connections and terminals between sub and main PBAs
- 6
6. Check for disconnected wires
- 7
7. If the main PBA's communication circuit is faulty, replace it
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung WA50K8600A Series Washers (2016) (2016–present)
Related Error Codes
The washer cannot detect how much water is in the tub.
The washer's motor cannot spin or is getting bad signals.
The washer is getting too much electrical power.
The washer is not filling with water properly.
The incoming water is too hot for the selected wash cycle.
The washer cannot pump the water out.
The washer is not getting enough electrical power.
The washer's I/O module lost communication with the main board.