Andrew W Point Roberts , WA October 09, 2016 Appliance: Frigidaire Freezer GLFH21F8HBB Frigidaire Freezer Glfh21f8hbb: Freezer light going on and off panel stopped responding each time we opened the door and if would only display a partial number sometimes restart by unplugging it wait 3 hrs and plug back in. How to replace Thermistor. Replaced the control panel and thermistor just to be safe. All is working like it used to and temp was at -18 after a day. Unfortunately, you cannot remove the old panel without wrecking it. But it was done for anyways. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes