Door lock timeout; machine attempts to lock but fails and shows F17.

Safety: Disconnect power before working on the door mechanism.

• Check door alignment: Ensure the door hinges are not loose or sagging. Tighten hinge screws and adjust so the catch lines up with the lock.
• Inspect catch and lock: Replace a worn or broken plastic catch. If the lock does not engage even with firm closure, replace the door lock assembly.
• Check gasket: Make sure the door seal is seated correctly and not folded or obstructing closure.
• Wiring check: Verify the lock connector is secure and wiring is intact.