Clay B La Marque , TX May 13, 2017 Appliance: Maytag Washer MVWB850WQ1 Maytag Washer Mvwb850wq1: Lf eroor code on panel. How to replace Valve. Googled the model number with the trouble code LF and was given a result of "bad fill valve " 99% the problem. Entered the model number with part discerption, Appliance Part Pros .com came up with the part availability . ordered it researched on you tube found a few vids on how to change none where right , But after removing the control panel and then the back could see how too get it out , the new pat came with new wiring harness so that made it even easier. After repair ran machine through clean cycle and man it has never filled that fast (I think that valve was bad from day one) . 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours