When the refrigerator does not cool or cool too much, this is a malfunction of the thermostat that regulates the internal temperature and turns the refrigerator on and off.
It can be easily replaced with a small expense (from 30 to 90 €)
In most cases, a replacement can be found, in spare parts stores or on the internet via the code and the model of the fridge.
The refrigerator code is found inside the fridge, on a label that is often hidden behind the vegetable trays.
In addition to the specific thermostat models, there are also generic, compatible with a wide range of refrigerators. These often have a lower price.
What is the thermostat?
The thermostat is a component consisting of a switch controlled by a temperature sensitive element. Often it can be set to set a given operating temperature of the device to which it belongs.
It consists of a metal part from which comes a temperature setting rod and a metal tube ending with the bulb, which reads the temperature and is often in contact with the bottom of the refrigerator compartment.
In the following video you will see how it is done inside.