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