faulty door switch on my Ignis ADL 349/A?

It goes like this
1. load up dishwasher and select wash programme 70deg
2. shut door, machine starts and cycle continued for about 10 mins, a click is heard, machine stops working.
3. Open door, there is water there with some dish debris,no error codes displayed, however top panel lights are not illuminated anyway.
4. Lights come on again only when you lower the door to almost horizontal, if you raise the door again to almost vertical, the lights come on again, grateful for any ideas!!!!!