I have a three year old Whirlpool top loader Model # WTW57ESW0 that will not fill. It will spin and drain, but will not even agitate when filled artificially. I have eliminated the fill valve as the problem by applying outside power to it. There is a tube with 2 wires below the fill valve and a disk shaped piece. The machine is equipped with a temp control, an extra rinse selector, a load selector and a softener added switch. The pressure tube come up to the softener switch.