Loud shreaking sound coming from Kenmore Frost Freezer.

If freezer is only 32, it’s probably freon or compressor related problem and not the thermostat. Or possibly a defrost problem.

Sealed system problem. Blockage in lines or low on freon

Check the condenser fan (outside at the rear) and check the coil isn't baking hot. Electronics or board wouldn't cause your symptoms. Check the simple things first!

May I get the make and model # to help you get the answer

You need to replace the door gasket. It's leaking air causing the frost.

If you live in a humid environment its the water vapor in the air that is turning to frost in your freezer. Every time you open the door you are exchanging the cold dry air in your freezer for the humid air on the outside, and when you shut the door closed its this humid air that turns to frost inside the freezer. If its building up frost faster than normal you might have a door gasket that is leaking the cold air outside thus letting the humid air in, which is turning to frost. Check that your door is aligned properly and that the gasket is secure on the freezer door.

Hope this helps explain it.

You need to check the temp in the freezer to make sure it's down to around 10 degrees. The alarm will go off much above that.

My freezer goes into defrost but doesn't automatically come out and the alarm goes off.

One reason for the fan running is that it is trying to distribute the air in the compartment. Look at the very rear of the freezer on the bottom and see if the little vents, which allow water to disperse, are not filled with frozen ice. If so, turn off the fridge (unplug it) and use a hair dryer to melt that ice until it is all gone. That will probably fill the condensation pan under the unit and you'll need to empty it.

that's the same problem i incurred, i replaced the thermostat and the fan. seems to be working fine.