Product review (5 stars): "Mostly ICE" wait 2 minutes to allow the thermostat to cool to freezing temperature then check the part for continuity
If your coils are frosted over this could be the part you need to fix your problem. To be certain remove this part from the freezer and place it in a glass of ice water. "Mostly ICE" wait 2 minutes to allow the thermostat to cool to freezing temperature then check the part for continuity. There should be continuity at this temperature if there is not then you know this part is bad.