Jean B Castle Rock , CO December 06, 2014 Appliance: Whirlpool Washer WFW9600TA01 Whirlpool Washer Wfw9600ta01: F35 error code and "suds" code. How to replace Electronic Control Board. Appliance repairman quoted us over $700 to repair our six-year-old Whirpool Duet front-load washer. My 15 year-old son watched a YouTube video on how to repair the washer with a $200 central control unit. We ordered the part, my son replaced it and we had a working washing machine three days later! 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes