Error Code AC
The control panel can't talk to the main circuit board
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC
What This Means
Signals between the sub and main PBAs are not sensed; Incorrect or loose connections between the sub and main PBAs; Faulty soldering on the sub PBA or control panel; Sub PBA wire is short-circuited because of moisture
What actually causes this:
A wire connector between the control panel and the main board came loose or has corrosion
First Thing to Check
Unplug the washer for 60 seconds and plug it back in — this resets the communication link
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 / control panel and check for any faulty soldering
- 4
4. Check for disconnected wires
- 5
5. Check whether the sub PBA wire is short-circuited because of moisture
- 6
6. 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 WF45R6100A Series Washers (2024) (2024–present)
Related Error Codes
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The washer has too much water in the tub and is overflowing