Why the refrigerator does not turn off. Refrigerator repair

A refrigerator is one of those benefits of civilization, to which a person has become so used that it is already difficult to imagine how one could manage without it. Especially when it comes to modern appliances that are unpretentious and practically do not require maintenance. Therefore, if this unit suddenly breaks down or starts to work incorrectly, this immediately entails a lot of inconvenience associated with preserving the freshness of the products, especially if it happened in the warm season.

Features of operation

One reason to be alarmed is when the refrigerator is constantly running and does not shut down. If the household appliance is functional, then it works in cycles: 20 minutes of operation and a short-time trip. Even in the heat, the refrigerator should be switched off at least once an hour. In case this is not the case, long operation of the device without disconnections is usually noticed quickly, and the question arises: why is the refrigerator not turned off?

Let's look at the reasons for the non-stop operation of the household appliance and how to eliminate them.

Quick freeze function is enabled

The first thing to check is how much the unit is freezing at the same time. If the temperature in the refrigerator is clearly lower than usual, that is, the refrigerator freezes, but does not turn off, the most common cause is the frozen mode. In new models of refrigerators there is such a function. Apparently, somehow it was turned on. In this case, it is necessary to arm yourself with the operating instructions of the device, try to disable this mode, and the problem will be solved.

Malfunction of thermostat

Perhaps it's 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, probably, the reason lies in the malfunction of the starting relay or the thermal sensor. In the first case, when the required temperature is dialed, the relay does not open the circuit, and the compressor continues to operate. In the second case, the thermostat itself, in view of its malfunction, does not give a signal to turn off the engine. In these cases, the sensor and relays must be replaced. This can be done at home.

Out of order Control module

In modern models of refrigerators, the cause of continuous operation can be in the failure of the electronic control unit, which ceases to handle signals correctly. This can happen as a result of voltage fluctuations in the network, if the device is operated without a stabilizer. Failures in electronic boards can only be eliminated by a specialist.

Infringement of tightness in the chamber

It happens that the temperature in the chamber of the household appliance is too high, it practically does not freeze, but the refrigerator does not turn off. The reasons for this can be in the loosely closed door of the refrigerator and, as a consequence, a constant influx of warm air. To close a door tightly or something stirs - probably, the handle of a saucepan, or any bottle - and then to eliminate it it is simple, or the seal of a door is damaged. This often happens if the unit is old. Worn seal is easy to replace and inexpensive.

Incorrect installation of the device

This is one of the most obvious reasons why the refrigerator does not turn off. It is possible that the room is too hot or the refrigerator is installed in close proximity to the radiators, or ventilation at the rear of the refrigerator is simply difficult. It is not difficult to fix this: you either need to move the device away from the wall, providing airflow, or rearrange it to another location.

Freon leak

Worse, when the search for the reasons why the refrigerator does not turn off, lead to the detection of refrigerant leakage due to mechanical damage to the circuit. It is clear that reducing the volume of freon will lead to the fact that its quantities simply will not suffice to maintain the necessary temperature in the chamber. But the compressor will be forced to unsuccessfully try to inject freon, which explains why the refrigerator does not turn off. Visually, this problem does not work out, since freon is a gas without color and odor. It will be necessary to diagnose, and then eliminate the hole or crack, through which the leak occurs, and refilling with freon.

The evaporator tube is clogged

So, if the door is closed tightly, no extra functions are included either accidentally or intentionally, and the room temperature is acceptable, and the refrigerator does not turn off, the reasons can be in clogging the channels of the evaporator capillary tube. Most likely, the tube is blocked by ice or by the accumulation of any foreign particles. You can try just to defrost the household appliance, but if this does not help, you can not do without the help of a specialist, and even the transportation of the unit to a service center.

Violation of the "heart" of the device

Perhaps the failure of the refrigerator, which will lead to the biggest waste, will be a malfunction or wear of the compressor. In this case, it is unable to maintain the pressure necessary for stable operation in the discharge pipe, so the desired temperature is not reached, and this explains why the refrigerator does not turn off. As a rule, the repair of the compressor is a complicated process, and the easiest way is to replace it.

The cost of the compressor depends on the model of the unit, but usually it is almost a quarter of the price of the refrigerator. Independently, this will not work, as this work involves the restoration of the hermeticity of the system and refilling it with freon, which only professionals can do. By the way, if you ignore for a long time the fact that the refrigerator works without stops, it will lead to the wear of the compressor and the subsequent need to replace it.

conclusions

The above are the most common reasons for the fact that the refrigerator is constantly running and does not shut down. This may be due to the malfunction of certain spare parts - a thermal sensor, a start-up relay, a motor-compressor, and 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 attempt to repair the problem yourself, especially if the warranty period has not yet expired. It is better not to delay the call of the master.