Washer-dryer shows E40; door symbol may flash and cycle will not start.

Safety first: Ensure the machine is unplugged if you need to adjust hinges or seals.

• Remove obstructions: Check that no clothing or foreign objects are trapped in the door seal. Wipe the seal clean.
• Close firmly: Push the door closed until you hear a clear click. Try starting the program again.
• Check hinge alignment: If the door sags or does not meet the lock squarely, tighten hinge screws or adjust the door position.
• Inspect door lock: If E40 persists despite proper closure, the door lock assembly may be weak or worn and should be replaced.