Victor B Walhalla , ND October 14, 2014 Appliance: Whirlpool Washer GHW9300PW1 Whirlpool Washer Ghw9300pw1: The dreaded f11 error code. How to replace Electronic Control Board. I purchased the MCU board but that did not fix the problem. I purchased the CCU board and installed. I ran the diagnostic program. The machine worked well. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes