I was incorrect on first post after speaking with original repair company. the fiirst time it did not drain-the sequence switch was replaced. the second time I took dishwasher to repair center-they kept it 89 weeks and replaced piston flapper valve. I would like my husband to repair this with just finding out first what particular part we need and what tests we should do first--any advice would be helpful on where to begin. thank you tstevens77@bellsouth.net