Error Code AC6
The motor controller board inside the dishwasher stopped responding
Moderate
Address soon - your appliance may not work properly
Also displayed as: No display, changes to pause
What This Means
Main PBA or Inverter PBA is out of order; Communication connection between Main PBA and Inverter PBA is not properly connected; Wire harness between Main PBA and Inverter PBA is damaged
What actually causes this:
The motor controller board lost connection or failed, preventing the wash pump from running
First Thing to Check
Turn off the dishwasher at the circuit breaker, wait 2 minutes, then turn it back on
Parts Involved
How to Fix
- 1
1. Check connections between Main PBA and Inverter PBA — reconnect all connectors
- 2
2. Check wire harness for damage between the two boards
- 3
3. If connections are secure, replace Inverter PBA
- 4
4. If error persists, replace Main PBA
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung DW80M9 Series Dishwashers (2018) (2018–present)
Related Error Codes
The dishwasher isn't getting enough water to run
The dishwasher can't drain the dirty water out
The heating element isn't warming the water properly
The water inside the dishwasher got dangerously hot
The water temperature sensor isn't reading correctly
A control panel button appears to be stuck or pressed
The touch panel and the control board aren't communicating properly
The dishwasher's main computer and the display board can't talk to each other