Washer-dryer displays E11 and may not start or may stop during a cycle; often associated with door lock feedback issues.

Safety first: Unplug the appliance before accessing the door lock or control board.

Step-by-step checks:

• 1. Check door closure: Ensure the door closes firmly and that the latch engages fully. Adjust the door catch plate on the cabinet if the door is misaligned.
• 2. Inspect door lock: Remove the door seal retaining band and access the door interlock. Check for signs of overheating or cracking. Ensure the connector is fully seated.
• 3. Test lock feedback contacts: With the lock removed and the machine unplugged, use a multimeter to test the feedback contacts while manually actuating the lock. If the contacts do not change state, replace the door lock assembly.
• 4. Wiring harness: Trace the wires from the lock to the PCB. Repair any damaged conductors or loose terminals.
• 5. PCB input: If a new lock and good wiring still result in E11, the PCB input circuit may be defective. Replacement of the main control board is usually required.