Error Code AC6
The main control board and motor driver board stopped talking to each other
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC6
What This Means
Communication failure between main and inverter PBAs; Loose or damaged wiring between main and inverter boards; Inverter PBA fault; Main PBA fault
What actually causes this:
A loose wire connection at the back of the washer between the motor controller and main board
First Thing to Check
Turn the washer off, unplug it for 60 seconds, plug it back in, and restart — the error sometimes clears on its own
Parts Involved
How to Fix
- 1
1. Check the wire connections between the main PBA and inverter PBA
- 2
2. Verify the machine may automatically return to normal — wait and observe
- 3
3. Turn the machine off and restart the cycle
- 4
4. If the error remains, inspect the inverter PBA and main PBA for damage
- 5
5. Replace the faulty PBA if needed
This Error Applies To
Samsung WF53BB8900 Series Washers (2024) (2024–present)
Related Error Codes
The washer's main control board and display board are not communicating
The door lock mechanism is not engaging or releasing properly
The add-door lock mechanism has failed
The water heater or temperature sensor is not working correctly
The washer detected a water leak from the drain line
The clothes inside the washer are bunched up on one side
A very heavy or stiff item is causing the drum to be unbalanced
The washer does not detect that the door is closed