Hi I am dealing with an American Dish Service commercial dish washer, model ET-AF-M. It has very simple electronics, but I cant seem to figure out what is the problem. As soon as I turn the master switch it turns on before I even press"Start" AND after it completes the wash cycle, it starts another one, and another. It keeps running full cycles until I turn off the master switch. Sometimes it stops after the end of the wash cycle but it has these urges to start. If I just tap it anywhere it starts again and keeps running. I thought that the problem was the mercury relay, replaced it, but nothing changed. There are two other components - the instant start relay and the cam timer motor. If I remove the instant start relay nothing changes - keeps doing cycle after cycle. Could it be the problem or the cam timer motor? OR something else that I cant think of.... I would appreciate any ideas.