A refrigerator is one of those benefits of civilization that a person has become so used to that it’s hard to imagine how one could manage without it. Especially when it comes to modern devices that are unpretentious and practically do not require care during operation. Therefore, if this unit suddenly breaks down or starts to work incorrectly, this immediately entails a lot of inconvenience associated with maintaining the freshness of the products, especially if this happened in the warm season.
Operational Features
One of the reasons to beware arises when the refrigerator is constantly working and does not turn off. If the household appliance is serviceable, then it works in cycles: 20 minutes of operation and a short shutdown. Even in hot weather, the refrigerator should turn off at least once an hour. If this is not the case, the long-term operation of the device without shutdowns is usually quickly noticed, and the question arises: why does not the refrigerator turn off?
Let's look at the reasons for the non-stop operation of a household appliance and ways to eliminate them.
Fast Freeze Enabled
The first thing to check is how much the unit freezes at the same time. If the temperature in the refrigerator is clearly lower than normal, that is, the refrigerator freezes, but does not turn off, the most common cause for this may be the included freezing mode. In new models of refrigerators there is such a function. Apparently, somehow it turned on. In this case, it is necessary to arm yourself with the instruction manual for the device, try to turn off this mode, and the problem will be solved.
Thermostat malfunction
Perhaps everything is not so simple, and the refrigerator does not turn off for some other reason. If the refrigeration unit “does not understand” that the set temperature has already been reached and continues to work without stopping, then perhaps the reason lies in the malfunction of the start-up relay or temperature sensor. In the first case, when the desired temperature is gained , the relay does not open the circuit, and the compressor continues to work. In the second case, the thermostat itself, due to its malfunction, does not give a signal to turn off the engine. In these cases, the sensor and relay must be replaced. This can be done at home.
Out of order control module
In modern models of refrigerators, the reason for continuous operation may be a breakdown of the electronic control unit, which ceases to process signals correctly. This can happen as a result of voltage drops in the network if the device is operated without a stabilizer. Failures in electronic boards can only be fixed by a specialist.
Chamber leakage
It happens that the temperature in the chamber of a household appliance is too high, it practically does not freeze, but the refrigerator does not turn off. The reasons for this may be in the loose door of the refrigerator and, as a result, a constant influx of warm air. To close the door tightly or something is interfering - perhaps a pan handle, or some kind of bottle - and then this can be removed easily, or the door seal itself is damaged. This often happens if the unit is old. It is easy and inexpensive to replace a worn seal.
Incorrect installation
This is one of the most obvious reasons that the refrigerator does not turn off. It is possible that the room temperature is too high or the refrigerator is installed in close proximity to heating appliances or ventilation is simply difficult at the rear wall of the refrigerator. This is not difficult to fix: you need to either move the device away from the wall, ensuring the flow of air, or move it to another place.
Freon leak
Worse, when a search for reasons why the refrigerator does not turn off leads to the detection of refrigerant leaks due to mechanical damage to the circuit. It is clear that a reduction in the volume of freon will lead to the fact that its amount will simply not be enough to maintain the temperature necessary in the chamber. But the compressor will be forced to unsuccessfully try to pump freon, which explains why the refrigerator does not turn off. Visually identify this problem does not work, since Freon is a gas without color and odor. Diagnostics will be required, and then repairing the hole or crack through which the leak occurs, and refilling with freon.
Evaporator tube clogged
So, if the door is closed tightly, no unnecessary functions are turned on either by accident or intentionally, and the temperature in the room is acceptable, and the refrigerator does not turn off, there may be reasons for clogging of the channels of the evaporator capillary tube. Most likely, the tube is clogged with ice or the accumulation of any foreign particles. You can try to just defrost a household appliance, but if this does not help, you can’t do without the help of a specialist, or even transport the unit to a service center.
Violation of the "heart" of the device
Perhaps the breakdown of the refrigerator, which will lead to the greatest expenses, will be a malfunction or wear on the compressor. In this case, he is not able to maintain the pressure necessary for stable operation in the discharge tube, therefore, the desired temperature is not achieved, and this explains the fact that the refrigerator does not turn off. As a rule, compressor repair is a complex process, and it will be easiest to replace it.
The cost of the compressor depends on the model of the unit, but usually is almost a quarter of the price of the refrigerator. It will not work out on its own, as this work involves restoring the tightness of the system and refueling it with freon, which only professionals can do. By the way, if you ignore the fact that the refrigerator works non-stop for a long time, this will lead to the wear of the compressor and the subsequent need to replace it.
conclusions
The most common reasons why the refrigerator is constantly on and not turning off are listed above. This may be due to a malfunction of certain spare parts - a temperature sensor, a start-up relay, a motor-compressor, or mechanical damage to the system or a malfunction of the device. In any case, if a household appliance such as a refrigerator breaks down, do not try to fix the malfunction yourself, especially if the warranty has not yet expired. It’s better not to delay the wizard.