Error Code AC6
The main control board and the motor control board cannot communicate
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: No display, changes to pause
What This Means
Main PBA is out of order; Inverter PBA is out of order; Communications connection for Main PBA or Inverter PBA not properly connected
What actually causes this:
A loose connector or a power issue disrupted the signal between the main board and the motor controller
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 and Inverter PBA connectors — reconnect if loose
- 2
2. Check Inverter PBA for damage or condensation
- 3
3. If connections are good, replace Inverter PBA
- 4
4. If error persists, 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 drying fan is not spinning fast enough to dry your dishes
The dishwasher door was opened during the setup process
The power supply to the dishwasher is not stable