https://youtu.be/grURTgO2-x0 When the thermostat is not working, your freezer is too cold or not cold at all. How do you diagnose or fix it? If you can’t fix it, while waiting for the arrival of a new part, how do you manually make coldness so that your food is not spoiled? If the thermostat is always disconnected then the freezer is not cold at all, if thermostat is always connected then the freezer would be super cold. Some other components in a refrigerator such as the compressor may also contribute to the problem if the freezer is not cold. Check out this video: https://youtu.be/c98qdSy3qAg
As shown in the video, thermostat problem can be easily checked. It is possible you may fix the thermostat problem. If you are not able to fix it, and waiting for the arrival of a new thermostat, then the video also provides bypass option so that your food is not spoiled.
Index
0:00 thermostat problem
0:27 open control box
1:03 measure thermostat resistance
1:32 verify bad thermostat only
1:57 need fix thermostat
2:19 cleaning did not work
2:43 disassemble thermostat
3:03 thermostat is fixed
3:23 install thermostat
3:43 bypass thermostat if not fixed https://twitter.com/RealGeniusAsian/status/1346586950543675392