Error Code AC
The dishwasher's main computer board and display board cannot talk to each other
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC (no display during normal operation)
What This Means
Main PBA defective; Sub PBA defective; Communication connection between Main PBA and Sub PBA not properly connected; Sub 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 connections between Main PBA CN802 connector and Sub PBA CN101 connector — reconnect
- 2
2. If check code continues after step 1, replace Sub Wire
- 3
3. If check code continues after step 2, replace Sub PBA
- 4
4. If check code continues after step 3, replace Main PBA
This Error Applies To
Samsung DDW24M999U Series Dishwashers (2017) (2017–present)
Related Error Codes
The heating element is not warming the water properly
The dishwasher cannot pump the dirty water out
The water inside the dishwasher got dangerously hot
Water is leaking inside the base of the dishwasher
The touch panel and the control board are not communicating properly
The motor controller board is not responding to the main computer
The water distribution vane that directs spray is not moving to the correct position
The dishwasher door is not fully closed