Washer-dryer combo displays F18 and may not complete cycles or may behave erratically.

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.

Possible Causes

Defective main control board, corrupted firmware, internal component failure, power surge damage

Safety first: Disconnect power before any disassembly.

Step-by-step checks:

Power cycle: Unplug the unit for 10–15 minutes, then reconnect and attempt a short cycle.
Check environment: Ensure the combo is not exposed to excessive humidity or leaks that could affect the control board.
Inspect board: Remove the top panel and visually inspect the main control board for burnt components or corrosion.

When to replace: If F18 recurs after reset and there are no external wiring or moisture issues, replace the main control board.

Hard 4/5

Main Control Board (CCU)

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