What are the symptoms of error code AC6?

Washer stops mid‑cycle with AC6 displayed, Washer attempts to start spinning but stops immediately, Motor does not respond to control signals, Washer intermittently resumes normal operation, Cycle fails to progress past wash or spin phases

What causes error code AC6?

Loose wiring harness between main PCB and inverter PCB, Faulty inverter PCB, Faulty main PCB, Moisture or corrosion on connectors, Power fluctuations interrupting communication

How do I fix error code AC6?

Turn the washer off and restart the cycle., Ensure stable household power before running the washer., Check for moisture around the control panel and base., If the error persists, the inverter or main PCB may require service.

Samsung Washer - AC6 Error Code

Communication error between main PCB and inverter PCB.

Meaning

Communication error between main PCB and inverter PCB.

The AC6 error indicates that the washer has detected a communication failure between the main control board (PCB) and the inverter PCB, which controls the motor. Samsung notes that depending on the state of the system, the washer may temporarily return to normal operation, but persistent AC6 errors indicate a deeper communication or hardware fault. This error prevents the washer from safely controlling motor speed, torque, and spin cycles.

Symptoms

Washer stops mid‑cycle with AC6 displayed
Washer attempts to start spinning but stops immediately
Motor does not respond to control signals
Washer intermittently resumes normal operation
Cycle fails to progress past wash or spin phases

Causes

Loose wiring harness between main PCB and inverter PCB
Faulty inverter PCB
Faulty main PCB
Moisture or corrosion on connectors
Power fluctuations interrupting communication

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Step-by-Step Fixes

Turn the washer off and restart the cycle.
Ensure stable household power before running the washer.
Check for moisture around the control panel and base.
If the error persists, the inverter or main PCB may require service.

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Safety Notes

Unplug the washer before inspecting internal wiring.
Do not attempt to remove the inverter PCB without proper training.
Avoid operating the washer during electrical storms or brownouts.

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Applicable Models

Show Models

6000 Series: WW25FG6B34BBAC

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Other Samsung Washer Error Codes

Show All Error Codes

Model-Specific Notes

The WW5000F/B700/6000F platforms automatically drain for 3 minutes when water-supply errors appear, and the power button is disabled during this period.

Disclaimer

The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.