Paul G Belmar , NJ October 31, 2015 Appliance: Whirlpool Gas Dryer WGD9400SW1 Whirlpool Dryer Wgd9400sw1: F 01 error code. How to replace Control Board. Based on you on-line video, I ordered a new Electronic Control Board. I almost decided to just buy a new dryer, but thought it was worth trying the repair and saving a lot of money. It was amazingly easy and very successful. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes