Mark R Bowling Green , KY April 19, 2020 Appliance: Frigidaire Refrigerator FRT21IL5DWR Frigidaire Refrigerator Frt21il5dwr: Freezer only partially freezing/refrigerator too warm. How to replace Refrigerator Defrost Thermostat. Replace the door seals, timer and evaporator fan. Took a couple of hours to switch the door swing while I was at it. Works like a brand new unit. Saved myself about $600! The diagnostic tools were great and the videos made it very easy! Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours