There are several reasons why your refrigerator is freezing all your food. One of the reasons could be your temperature control thermostat. This device directs voltage to the evaporator fan motor, compressor, and condenser fan motor. If the thermostat is not working correctly, the refrigerant system may overwork; hence the refrigerator will get too cold. To know if your thermostat is faulty, rotate it to the highest setting and listen for a click. If it clicks, then it is okay. However, if it does not do so, then there is an issue. Here, we recommend using a multimeter to test for continuity. If it does not have continuity, then you will be required to replace it. Another reason for the freeze-up could be a defective air damper control. Check to see if the damper between the fridge and freezer is closed or open. If it is open and does not close, then it is faulty and should be replaced.