Error Code AC
The main control board and the door control board cannot communicate with each other
Moderate
Address soon - your appliance may not work properly
Also displayed as: No display
What This Means
Main PBA is out of order; Sub PBA is out of order; Communications connection for Main PBA or Sub PBA is not properly connected; Wire harness damaged
What actually causes this:
A power surge or loose wire connection disrupted communication between the control boards
First Thing to Check
Turn off the dishwasher at the circuit breaker, wait 60 seconds, then turn it back on
Parts Involved
How to Fix
- 1
1. Check the connections between Main PBA CN802 connector and Display Control Module CN101 connector — reconnect if loose
- 2
2. If check code persists after step 1, replace Sub-Wire
- 3
3. If check code persists after step 2, replace Sub-PBA
- 4
4. If check code persists after step 3, replace Main-PBA
This Error Applies To
Samsung DW80R706 Series Dishwashers (2019) (2019–present)
Related Error Codes
The main wash pump that sprays water onto your dishes is not working
The heating element is not warming the water during the wash cycle
The motor that directs water to different spray zones is not working properly
The touch buttons and the control board inside the door cannot communicate
The water inside the dishwasher is dangerously hot
The main control board and the motor control board cannot communicate
The drying fan is not spinning fast enough to dry your dishes
The dishwasher door was opened during the setup process