Washer door will not open at end of cycle, even though drum is empty and no error is displayed.

Safety first: Unplug the washer. Do not force the door open by pulling hard on the handle.

Step-by-step checks:

• Wait a few minutes: Some Grundig models delay unlocking for 1–2 minutes after cycle end. Listen for the click of the lock.
• Manual release: Use the emergency release near the pump filter to open the door.
• Inspect door handle and latch: If the handle feels loose or does not spring back, replace the handle/latch assembly.
• Replace door lock: If the lock frequently fails to release, replace the door lock assembly.