Product review (5 stars): FH Fix
My Whirlpool Duet front load was throwing the "FH" code during the rinse cycle. It appeared that water was entering the machine just fine, but it didn't know how much. The Whirlpool punch list for the FH code lists roughly seven possibilities except "is your washer plugged in." Stop pulling out your hair in frustration, this is the fix. The new one is black, not white, and slightly smaller in circumference. Results are what matters, and no more FH code.