Kevin T Cleveland , TX February 16, 2018 Appliance: Frigidaire Refrigerator LFTR1814LW6 Frigidaire Refrigerator Lftr1814lw6: Lower fridge not cold. How to replace Refrigerator Defrost Thermostat. Followed recommendations and replaced parts. Works awesome. Got this for free spent $55 on parts. So I recommend AppliancePartsPros ultimately for any problem. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes