Scotty B Dawsonville , GA January 06, 2020 Appliance: Frigidaire Refrigerator FRT21S6AQH Frigidaire Refrigerator Frt21s6aqh: Freezer temp was 10 degrees above normal. How to replace Cold Control. Installed a new cold control thermostat. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes