Peter M Fairless Hills , PA February 22, 2015 Appliance: Model 58054501500 KENMORE Fixed the "1%" humidity issue You'll have to remove about 13 screws to attached the sensor -- the back and front panel as well as the large side she'll. So if you are like me, a novice then it will take about an hour or so. Don't bother trying to detach the small metal box housing the circuitry. The unit -- a 8 year old kenmore is now operational. Oh, I broke a few snaps removing the back panel and putting it back together, while fine, was not perfect. I used compressed air and Also wiped the 8 years of dust off the unit as I disassembled unit. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours