Error Code AC
The dishwasher's control boards can't talk to each other
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC (no display during operation)
What This Means
Main PBA or Sub PBA is out of order; Communications connection for the 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 connector between Main PBA and Sub PBA — reconnect
- 2
2. Check all wire harness connections between boards
- 3
3. If error persists after reconnecting all connectors, replace Sub PBA
- 4
4. If error still persists, replace Main PBA
This Error Applies To
Samsung DW80K5050U Series Dishwashers (2020) (2020–present)
Related Error Codes
The dishwasher isn't getting enough water
The dishwasher can't drain the water out
The water temperature sensor isn't reading correctly
The incoming water is too hot for safe operation
The heating element isn't warming the water
Water is leaking inside the base of the dishwasher
Too much water detected inside the dishwasher
A control panel button appears to be stuck