Hal C Houston , TX April 01, 2022 Appliance: Frigidaire Freezer FFU14FC4CW2 Frigidaire Freezer Ffu14fc4cw2: The evaporator coils are freezing up. Then the freezer no longer works. How to replace Defrost Thermostat. Replaced the Defrost Thermostat and the DefrostHeater Element. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes