The refrigerator is one of the appliances that is very difficult to do without at home. Therefore, its malfunction often turns into a certain discomfort. In this case, both ordinary breakdowns can occur, when the refrigerator refuses to turn on, and the opposite cases. Often, a household appliance, on the contrary, does not turn off when necessary and works without interruption. What leads to disruption of normal operation? Why the refrigerator does not turn off, but most importantly, what can be done?
Content
The main causes of refrigerator malfunction
The operation of any refrigeration equipment is based on cyclicity - that is, it turns on, and after a while it is scheduled to turn off. And so time after time. In this case, the ratio between these intervals depends on the ambient temperature and the selected cooling mode. Normally the compressor will run for 10-20 minutes based on external conditions.
The constant functioning of the power unit is not properly fraught with overheating subsequently and increased wear of parts. Refrigerators with different technical equipment go on sale, but no matter how modern the model is, it is not designed for long engine operation without stopping it.
Such a necessary attribute consists of many parts, and therefore the reason why the refrigerator does not work well may be a breakdown of any of them. The owner of the equipment is able to fix some problems on his own, but in other cases, you will have to call the master at home for professional diagnostics.
No frost system
Equipment with such equipment is far from uncommon, and many owners acquire just such equipment. If earlier old household appliances had to be periodically turned off in order to get rid of icing, then modern units do not need this. Unless, for major cleaning inside.
But even this system sometimes experiences the same problems - the refrigerator works fully and constantly. In this case, the malfunction can be of two types:
- Long operation after placing food or opening the refrigerator or freezer door.
- The compressor runs much longer than it should.
In the first case, the reason lies in the violation of the airflow.A fan is usually installed on the back wall (depending on the model, there may be several), which accelerates the air through the main and freezer chambers. Its failure leads to a violation of the circulation mode of the cooled flow. The fan itself may break or freeze.
Outside (near the evaporator compartment) the air is cold, but inside the chamber it is warmer. The temperature sensor detects the value and sends a signal to cool down, which makes the compressor work harder.
Diagnostics is easy - just remove the back panel (it is usually made of plastic). Here you can see the evaporator with fans (if there are several). It is worth turning on the refrigerator and see if they work.
The second case concerns the sensor-compressor system, when a continuous signal comes from the sensor and the compressor works hard without stopping. There are reasons for this:
- evaporator icing;
- broken fan;
- activated "superfrost" (Super Frost mode);
- temperature device malfunction;
- freon line damaged.
You can get to the compartment with the evaporator yourself - just remove the back wall. Depending on the refrigerator model, it may be necessary to remove the side covers. And if the check does not answer the question and the equipment is still working for wear and tear, it is worth calling the master.
Door seal damage
This is a common reason why the refrigerator is constantly running and not turning off. The rubber element is located around the entire perimeter of the door and prevents leakage of cold air from the internal chambers.However, over a long period of operation, the sealant cracks, begins to flake off, or even bursts. This leads to depressurization, and a warm stream rushes inward.
As a result, the compressor begins to work hard - that is, it tries by all means to compensate for excessive heating from the outside. Even a small hole promises quite serious problems in the future. From this it seems that the equipment stops freezing, although this is not so.
The "malfunction" is easily eliminated - just find such a seal and carefully fix it on the door. Anyone can do this kind of work.
Mounting the seal
There are several ways to fix the door element:
- Polymer adhesive - the composition retains its properties even at low temperatures. This is a universal solution.
- Special grooves - in some models, special technological protrusions are provided, as well as cutouts. It is better to purchase a rubber gasket from the equipment manufacturer, which will simplify its installation. However, native seals are expensive, sometimes you have to buy low-quality Chinese counterparts, but they are noticeably cheaper. Sometimes such a variation can last no less than the original.
- Self-tapping screws are a barbaric method of fastening. But since there is a wide range of polymer adhesives on sale, these fasteners are no longer used for mounting the seal. In addition, complete sealing cannot be guaranteed.
The exact method of fixing the seal depends on the model of the refrigeration unit.
Error in set mode
Often the cause of a compressor malfunction is an incorrectly set thermostat. Inside the main chamber, the temperature should constantly be kept between 0 ° and 5 ° Celsius.This mode slows down the development of microorganisms. In this case, places are formed where each has its own parameter. If food is placed in the wrong place, it will freeze.
The optimal temperature distribution looks like this:
- for vegetables, fruits and herbs - +7 °C (lower section);
- for meat and fish – +2 °C (bottom shelf above containers);
- for dairy products, eggs, soups - +4 °C (medium shelves);
- for garnishes, jams – +7 °C (upper shelves).
On the door shelves, the temperature usually stays around +10 °C. It is recommended to store drinks, concentrates, ready-made sauces here.
Compressor failure
Each refrigerator is equipped with a relay and thanks to this part its cycle is set. Sometimes the contacts stick to each other, and at the right time they cannot be separated. Then the compressor starts to work non-stop, and if it turns off, it rarely does it. In other cases, the reason lies in natural wear and then the required pressure is not formed in the system, which is why the required temperature is not reached. The point is already clear.
You can fix the problem by replacing the engine. And this work should be done only by a specialist, since it includes several stages:
- disassembly of the refrigeration unit is required;
- installation (replacement) of the motor;
- be sure to re-upload freon into the system;
- procedure for starting the temperature sensor;
- testing and commissioning.
The cause of the problem must be determined, otherwise the purchase of a new compressor will result in the same troubles. Therefore, here you can not do without calling the wizard.
The room temperature is too high
Another common reason that indicates the inattention of the owners. You should not be surprised at the appearance of troubles when the refrigeration unit is located near heating appliances (pipes, radiators, heaters, fireplaces) or on the sunny side. In such areas it is forbidden to place equipment!
To avoid overheating of the motor, you should be guided by a number of simple rules:
- do not place refrigeration equipment in front of a window opening;
- installation of equipment on a warm floor is also prohibited;
- always close the door tightly;
- provide the kitchen with an optimal level of ventilation.
It is better to move the refrigerator to a place suitable for it, where it will not heat up above +10°C. It is also worth installing an air conditioner in the kitchen, which will create a favorable atmosphere in the hot season.
The thermostat is out of order
With a serviceable part, the cycle of the refrigerator is performed smoothly. However, its breakdown leads to the fact that the compressor does not turn off at the right time and continues to work for wear.
For diagnostics, the following algorithm will help:
- remove the back wall of the refrigerator;
- remove the temperature sensor;
- there is a plate near the central nut - press it;
- if there is no click, the part needs to be replaced.
Also, the problem can be identified in another way. To do this, it is worth comparing the readings of the rated power of the equipment (it is given in the instructions) and the current electricity consumption during the day. Usually it is 30 kW per month. If the energy consumption deviates from the norm upwards, we can conclude that the thermostat is malfunctioning.
If the refrigerator does not turn off, it constantly works, how to fix it then? The problem is solved by installing a new part, which is also within the power of any owner of the equipment.
Broken evaporator pipes
These pipes directly affect the operation of the cooling system. The main reason for their failure is an ice clot due to a malfunction of the engine or loss of tightness. The reason for these breakdowns lies in the following:
- Overheat – the compressor generates a lot of heat during operation and often a higher temperature is created, for which the nozzles are not designed. As a result, their tightness is broken.
- Pollution - only refrigerant and oil circulate inside the cooling circuit, nothing else should be. Air, moisture, dirt, dust and other contents are contaminants that adversely affect compressor performance. They can get in due to poor maintenance of equipment.
- Lack of lubrication - leads to increased wear of the motor, which sooner or later ends with its overheating. The pipes also run the risk of receiving more heat than they need.
It's very difficult, if not impossible, to do it on your own. In addition, it is required to almost completely disassemble the equipment. Therefore, there is only one way out - calling the master or delivering the refrigerator to the workshop.
Refrigerant is leaking from the system
Freon leakage usually occurs due to wear and tear of the evaporative system. Another reason is improper refrigerant charging. Visually, the malfunction manifests itself as oily spots and traces of rust on the walls.
Freon also flows out due to kinks in the nozzles. To fix the problem, you need to refuel the system with freon. But only a specialist should do such work.
Failure in the control module
Any modern refrigerator is equipped with complex electronics, a protection system against voltage surges, short circuits and other troubles. The correct operation of the equipment depends on the performance of the control module. And if it starts to malfunction, there are problems with the refrigeration unit. As a rule, this occurs due to a violation of the integrity of its contacts.
The existing problem is eliminated by flashing the control module, which only the master can do.
Failure in single compressor models
In older models of refrigeration units, one engine is used, which takes on the entire cooling load of both chambers. Therefore, such compressors break down more often. At the same time, for each specific model of equipment, malfunctions can be of an individual nature. For example, Liebherr refrigerators cannot withstand external cooling at +16˚C or less, as well as temperature rises of more than 32 degrees. As a result, the thermostat breaks, which leads to a malfunction of the power unit.
Long-term freezing causes a malfunction of the start relay and temperature sensors in Nord refrigerators. At Atlantes, thermostats and defrost sensors most often break down due to an increase in external temperature conditions.
Refrigeration units with one compressor need frequent repairs and maintenance at the service center.
Cases where trouble-free operation is not a breakdown
Sometimes continuous operation has nothing to do with malfunctions. This happens in a number of cases:
- after transportation;
- upon completion of defrosting;
- due to voltage drop;
- improper operation - often with a loosely closed door.
That is, when the refrigerator works without interruption after defrosting, this is due to the need to bring the temperature in the refrigerator to the desired value. Sometimes this takes several hours, then the compressor begins to operate in a cyclic mode. Often, the sound of the fan motor is mistaken for the noise of the power unit of the refrigerator. And you might think that this compressor starts to buzz.
Conclusion
Those who like to fix everything on their own should take into account that in order to eliminate some malfunctions, you need to have the appropriate skills and experience in owning the necessary tools. Only then can the refrigerator repair be done without errors, and the unit will work again at full capacity. Otherwise, it is better to contact the professionals of the service center.
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