Charles T Brick , NJ July 28, 2014 Appliance: Kenmore Freezer 106724240 Kenmore Freezer 106724240: Defrost timer staying on defrost too long timer very hot to touch! frozen items on top shelf getting soft. How to replace Defrost Timer. Replaced the defrost timer. took about ten min. 4 days later -9 deg. working perfect ! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes