AE
Samsung Communication Error Between Main PCB and Sub PCB

Washer-dryer combo displays AE and may not respond to button presses.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Loose harness between control boards, Moisture on control boards, Failed main PCB, Failed display/control PCB

How to Fix / Troubleshooting

Safety first: Unplug the unit before removing the control panel or top cover.

Steps to check:

  • Power reset: Disconnect power for 5–10 minutes, then reconnect and see if AE clears.
  • Inspect control connections: Remove the top cover and control panel (if accessible). Check the ribbon cables and harnesses between the main PCB and user interface board for secure connections.
  • Check for moisture: Look for signs of water intrusion or condensation on the boards. If present, allow to dry completely before reassembly.

When to stop: If AE persists, one of the control boards is likely defective. Board-level diagnosis and replacement should be done by a professional.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control PCB
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