After installing a new drain hose, his Whirlpool WFW8300SW05 Duet washer refused to fill and displayed the F20 code after eight minutes. You see: He figured that the hose was too low , resulting in a siphoning effect preventing the washer from filling.. The F20 error code on a Whirlpool washer is usually indicative of a water supply issue. There may be an issue with your home's water supply, or there could be a.
An F20 code can easily be fixed by checking the following areas. Below, we've listed a few common fixes that you'll be able to find yourself. It is recommended to call a professional or the manufacturer if you don't know what you're doing.. F-20 code on whirlpool duet front loader. Replaced the water inlet connector. Has great water pressure and pressure sensor works. Please help. Tried everything.. Have done all the things listed but still get f 20 code on my front load washer sporadically. Unplugging seems to help sometimes but not always. jason Groenjes. April 25, 2017 at 7:.