Michael J Lawrence , NY April 05, 2015 Appliance: Whirlpool Washer WFW97HEXL2 Whirlpool Washer Wfw97hexl2: F6 e1 error machine could not complete "quick diagnostic test" hung at test number c00. How to replace Refrigerator Ice Dispenser Guide. I replaced the MCU 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes