I had the help of Appliances Pros----at first I thought it was the timer but they told me it could be the water pressure sensor switch. They suggested I get both the water pressure switch ($78) and the time ($135). I decided to get just the water pressure switch as I figured if that didn't fix it, it was less than the $135 and installed electrical parts can't be returned. As luck would have it, the part did fix the problem. It saved me buying a timer on my own which would not have fixed the problem and would have been out $135 and still needing to buy another part. So they helped me fix it. The installation videos were really helpful. Took about 5 minutes to install a new part.