Washer just keeps on filling
Hi. My 5-year-old Kenmore washing machine suddenly stopped sensing when it has reached the proper fill level. Instead of beginning its wash cycle, it just keeps on filling and overflows until I shut it off. When I discovered it, I shut it off and moved the dial to spin, which allowed it to drain. I then set the water level to its lowest setting and tried again. It did not recognize that setting either, and just kept filling.
Other info -- I did notice there was a layer of scum sitting on the sheets that I had tried to wash, but I think this was just because the tub had filled higher that the normal limit, and 5 years of buildup above that line got soaked off.
I'm hoping to avoid an expensive service call -- can someone tell me how the washer knows how to stop filling and switch to wash mode? I'm looking at the parts list that came with the machine and the only one that sounds plausible is the "hose pressure switch." (I don't see any sensors on the list) It is a Kenmore 3-speed automatic washer model 110.22712100.
Any advice or referrals to other sources appreciated. Thanks, ~Julie