My dishwasher will not stop running - even with the door open. And it has switched programs from normal to "heavy wash". I appears to be stuck on the drain cycle. I can't reach the power plug without pulling the unit out so I've flipped my breaker switch. When I flip the breaker back on the washer starts running, first with the program light on normal wash, but it changes to heavy wash after about 5 seconds and sounds like it is in drain mode. What should I do? And thank you for your help. David