The oven door remains locked after a cycle or will not lock to start a pyrolytic self-clean; F11 is displayed.

Safety first: Disconnect the mains power. If the door is locked with items inside, allow the oven to cool completely before attempting a manual release.

Step-by-step checks:

• Manual release (if available): Some V-ZUG models feature a manual door lock release accessible from the top or front after removing a trim piece. Consult the service instructions for the exact location.
• Inspect latch alignment: Check that the door closes evenly and that the latch engages the lock hook correctly. Adjust the door hinges if the door is sagging.
• Access lock assembly: Remove the top panel or front panel to reach the door lock unit. Inspect for broken plastic parts or signs of overheating.
• Test lock motor and switches: With the lock disconnected, measure resistance of the motor/solenoid and the microswitches. Replace the lock assembly if the motor shows an open circuit or the switches do not change state when actuated.
• Check wiring: Repair any damaged wires or loose connectors between the lock and the control board.

When to call a technician: If F11 persists after replacing the lock assembly, the control board may not be driving the lock correctly and should be inspected by an authorized technician.