I had a similar problem with an older model. You need to check the wires in the door as they flex with the continual opening and closing and eventually break. Try taking the inside panel off the door then trace each wire and check for cracks/breaks. I found a broken wire - rejoined it with a connector block and the washer has worked fine ever since. I also put some electricians tape round the other wires to try to protrect them a bit. Hope thats helpful.
Rob
February 2010