Mehdi G Middlebury , CT August 17, 2022 Appliance: Frigidaire Freezer LFFH17F3QWC Frigidaire Freestanding Freezer Lffh17f3qwc: The freezer would not shut off and there was a lot of frost inside. How to replace Defrost Thermostat. I bought 3 parts from AppliancePartsPros.com and replaced them. The prices were great. The parts received were genuine OEM. I cannot be happier. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes