Kathy B Clinton , MA January 05, 2015 Appliance: Whirlpool Refrigerator ET1CHEXVB03 Whirlpool Refrigerator Et1chexvb03: The freezer in the refrigerator kept icing up not defrosting on its own. How to replace Defrost Thermostat. Replaced the part that we order through you. The process of ordering the part, the shipping and receiving of the part was excellent. We will definitely order from your company if we ever need further repairs. 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes