E18
Summit Mode Switch / Program Transition Error

Washer-dryer combo shows E18 and stops; may occur when switching from wash to dry.

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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

Faulty program selector or mode relay on PCB, Software glitch in control board, Stuck relay contacts, Loose wiring between control sections

How to Fix / Troubleshooting

Safety first: Unplug the appliance before accessing the control area.

  • Power cycle: Unplug for 10 minutes, then plug back in and try a different program (e.g., wash-only, dry-only) to see if the error is program-specific.
  • Inspect control board: Remove the top panel and inspect the main PCB for burnt spots or damaged components, especially near relays.
  • Check connectors: Ensure all harnesses between the main board and any secondary boards (e.g., dryer control) are fully seated.

If E18 recurs across multiple programs, the main control board or mode relay is likely defective and should be replaced by a technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board (PCB)
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