Dr. S Comfort , TX January 18, 2017 Appliance: Whirlpool Washer GHW9150PW0 Whirlpool Washer Ghw9150pw0: F11 code. How to replace Affresh Washer Cleaner 3 Pack. Based on others' input, I ordered the MCU, but error code and washer problem remained the same. Customer service was excellent; helped me with return and order of the main control board (ECU). That solved the problem. Fast processing and shipping, too. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes