MORE INFO ON THIS PROBLEM: The problem is that the drainage hose installation by Winnebago is incorrect resulting in sink waste water backing into the dishwasher. Since the sink water can have liquid detergents in it, those detergents will get into the dishwasher and cause the unit to NOT SEAL properly. You get a fault code and the door will not lock. We had to put a heavy box in front of ours so it wouldn't slide open while driving. You can clean the top seal thoroughly and get it to work again. But the problem is not solved. My unit is back with my dealer now ... see what happens. Good luck to all. The F/P is a great dishwasher. I hope Winnebago finds a good solution for us.
Don "VectraDon" Thimas
2004 Vectra 40AD