Model # XXXXX XXXXX No light in freezer. Door seals look good.
excellent question, the exterior will help with moisture around the door. i would turn that on. That will assist in heated the door gaskets. I would also inspect the bottom of the door gaskets. that is where they go bad first. the thermostat that you lower is a good idea. here is how that works. the freezer will alway be at 0 degrees. even if you set it to the coldest setting it will always be zero degrees. what you are selecting is the temp in the fridge. the thermostat in the frige side and has a long metal probe that is inserted in freezer way in the back. so when you lower in the thermostat you are raising and lowering the temp in the frige. so the temp will always be above freezing. 32 degrees. I wish i could tell you exactly where you moisture is coming in. most of the time it is coming through the door gasket some how. I did once find a magnet between the door gasket and body. good luck