Error Code AC6
The main control board and the motor control board can't communicate
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 defective; Communication connection between Main PBA and Inverter PBA is not properly connected
What actually causes this:
A loose wire connection or a failed circuit board is preventing the motor controller from responding
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
- 2
2. Check for condensation on the Inverter PBA
- 3
3. If connections are good, replace Inverter PBA
- 4
4. If error persists, replace Main PBA
This Error Applies To
Samsung DW80R9950U Series Dishwashers (2023) (2023–present)
Related Error Codes
The dishwasher isn't getting enough water
Water is getting into the dishwasher when it shouldn't be
The dishwasher can't drain the dirty water out
The dishwasher tried multiple times to drain but keeps failing
The water distribution motor that directs spray isn't working properly
The water temperature sensor isn't reading correctly
The heating element isn't warming the water
The water got dangerously hot inside the dishwasher