Richard M Tamarac , FL March 14, 2018 Appliance: Model WFW8300SWO5 Error code F20 F21 U guys are the best I replace the inlet valve sold by u I had also err code F 21 Replace the draining pump that was not working sold by u It took me about 30 m to replace both parts thanks to your video I used a driver and # 7 craftsman screw Thanks guys for your help Rich Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes