Juan Q Port Charlotte , FL February 16, 2015 Appliance: Whirlpool Washer WTW4800XQ4 Whirlpool Washer Wtw4800xq4 / : "f7 e1error code ". How to replace Control Board. My fix of my whirlpool washer was fairly easy following guide book which came with machine. The help of tech. also hekp to assure me in my diagnosis of machine. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes