Michael D Bettendorf , IA December 10, 2016 Appliance: Whirlpool Washer WFW9400SW01 Whirlpool Washer Wfw9400sw01: Washer was displaying an error code f26. How to replace Door Latch Assembly. I followed the instructions provided by the appliancepartspros.com video. Everything was exactly like the video described. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes