Chau N Huntington Beach , CA March 16, 2018 Appliance: Model PSS26MSWC SS Ice built up in freeze compartment To avoid $200.00 repair cost, I tried to do it my self. Most refrigerators having this problem, needs to replace defrost timer. But this GE Profile Refrigerator does not use defrost timer, so this problem must be caused by one of the 3 elements, thermostat or sensor or heating coil. I am lucky to purchase the thermostat from Appliance Parts Pro for less than $20.00 including shipping fee.After 3 days delay due to shipping time, my refrigerator is working fine now. Thank you Appliance Parts Pros. 8 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes