Karen C Lakeside Park , KY June 23, 2019 Appliance: Whirlpool Electric Dryer WED9400SW1 Whirlpool Dryer Wed9400sw1: F 01 error code. How to replace Control Board. When I called my local appliance store they couldn’t schedule a time to repair my dryer since they said the control board for my Whirlpool Duet dryer was unavailable. Since I didn’t want to wait I checked your website to see if I could order the part myself. Your website confirmed that the part was not available but showed a compatible Whirlpool factory made part. I ordered the part in the evening and it arrived in two days. It was very easy to replace using instructions found online. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes