so I have a call for a whirlpool WTW5600VQ0 that the complaint was the timer doesn't advance. I went one I checked to ensure it wasn't the lid switch. It's filling and then switching, but it's getting caught up on the rinse cycle. Unless you advance it. So I pulled tube off the pressure switch at the tub and blew into it and it would kick in the time. So I checked the tube for debris and I'm all good. I blew through the hose into the tub and got bubbles and took the cabinet off and tub cap and could see there's nothing in front of the pressure switch to jam it up.
My thought is that it's the pressure switch that needs to be changed, could it be that the pressure switch will activate during fill because of how quickly it's filling, but losing pressure during the rinse because of how slow it fills?