Washer-dryer shows E43; door lock may click repeatedly or not engage at all.

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

Shorted door lock coil, Failed triac on PCB, Wiring short between lock and PCB, Moisture-damaged control board

Safety: Unplug the appliance before any electrical tests.

Test door lock coil: Measure resistance across the lock coil. Replace the lock if shorted or open.
Inspect harness: Look for chafed or shorted wires between the lock and PCB.
Check PCB: If a new lock and good wiring still result in E43, the door lock triac on the PCB is likely damaged. Replace the main control board or have it repaired by a specialist.

Professional Required 5/5

Main Control Board (PCB)

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