Kenmore Elite HE3

Had a small problem with with this washer: We leave the door open to help it dry out when not in use, and it decided to fill itself. sticky mixing valve obviously. Go to my local appliance parts dealer, get a new valve assembly, and now I get FH error message: no water detected. There is water coming in.

So, I put the old valve back on, no error message. New valve looks just like the old one.

Anyone ever had a bad mixing valve? I’m taking it back tomorrow, paid WAY too much for it, trying to patronize local business.