David J Ashland , MA November 15, 2015 Appliance: KitchenAid Refrigerator KSRA22ILSS13 Kitchenaid Refrigerator Ksra22ilss13: Freezer runs continuously. How to replace Thermistor. I replaced the thermister 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes