Marilyn L Blairsville , GA July 06, 2019 Appliance: Maytag Refrigerator AFF2534FEB11 Maytag Refrigerator Aff2534feb11: Freezer icing up not cooling in refrigerator compartment. How to replace Defrost Heater. Replaced the thermostat and the heater using your videos Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours