The situation when a refrigerator Biryusa works without interruption is familiar to many owners of this equipment. The unit hums for days, trying to reach the set temperature, but never goes into rest mode. This is not just an irritating noise that disturbs sleep, but also an alarming signal that the cooling system is operating in emergency mode with overload of all components.
The constant operation of the motor-compressor leads to rapid wear and tear of the equipment's life and a sharp jump in electricity bills. Compressor overheating may be the reason its complete failure, which will require expensive replacement. It is important to understand that there can be several reasons for this behavior of a refrigerator: from a banal violation of operating rules to serious technical malfunctions.
In this article we will analyze in detail why your refrigerator Biryusa stopped turning off, and what steps need to be taken to fix the problem. We will look at both simple errors that you can fix yourself in a couple of minutes, as well as complex breakdowns that require the intervention of a professional technician with the equipment.
Operating errors and external factors
Before you panic and call a technician, you should exclude the human factor. Often the reason lies in a simple violation of operating rules that users forget about or are not aware of. For example, if you have just defrosted the refrigerator or turned it on for the first time after purchase, Continuous operation mode it can last up to 24 hours.
This is normal for the first start-up, when the unit needs to cool the entire internal volume and chamber walls. However, if the equipment has been operating normally for a long time, check the position of the temperature regulator. Too much cooling causes the compressor to work without rest.
⚠️ Attention: If you set the regulator to the maximum value (usually the number 5 or 6, or the "Max" mode), the refrigerator will try to reach extremely low temperatures, which is physically impossible in a hot room, and will work without stopping.
It is also worth paying attention to the tightness of the door. If sealing rubber is worn out, dirty or deformed, warm air constantly enters the chamber. Sensors detect the temperature increase and instruct the compressor to work harder. Check whether dishes or food lying on the shelves are preventing the door from closing.
Another important aspect is the location of the refrigerator. If Biryusa stands close to the wall or next to heating devices (battery, stove), the heat transfer efficiency of the condenser decreases. The system cannot release heat and the cooling cycle does not complete.
Faults of the thermostat and sensors
One of the most common reasons why the refrigerator does not turn off is failure of thermostat (thermostat). This device is responsible for controlling the temperature inside the chambers. When a predetermined threshold is reached, the thermostat must break the electrical circuit and turn off the compressor. If the contacts are stuck or the mechanism is broken, the circuit remains closed.
In modern models Biryusa with a system No Frost or electronic control, instead of a mechanical thermostat, air sensors are used and electronic modules. They can transmit incorrect data to the control board, which, in turn, does not give a command to stop the engine. Diagnostics of such systems requires special equipment.
Signs of a malfunctioning thermostat are often accompanied by other symptoms:
- ❄️ In the refrigerator compartment, food freezes, turning into ice, although this has not happened before observed.
- 🔊 The compressor operates continuously, but the temperature in the chambers remains above normal (if freon leaks).
- ⚡ Electricity consumption has increased sharply without changing the mode of use.
Replacing the thermostat is a procedure available to experienced DIYers, but requires caution. In models with a capillary tube, it is important not to damage the sensing element during installation. Electronic models often require flashing or replacing the board, which is best left to specialists.
How to check a thermostat with a multimeter?
To check a mechanical thermostat, you need to remove it, disconnect the wires and “ring” the contacts in cold and warm states. If the contacts do not open when the hands are heated (it always beeps) or do not close when cooled, the part is faulty. However, this method does not provide a 100% guarantee of the correctness of the temperature thresholds.
Problems with the refrigerant and circulation system
If the refrigerator Biryusa hums, but does not cool or cools very weakly, while working without interruption, there is a high probability freon leaks. The refrigerant circulates through the system, picking up heat. When its amount critically decreases, the pressure drops, and the compressor cannot create the required temperature regime, operating idle.
A leak can occur anywhere in the circuit: in the foamed part of the housing, in the evaporator or in the places where the tubes are soldered. Often the cause is metal corrosion or mechanical damage due to careless defrosting (for example, piercing the wall with a knife).
Another problem in this category is clogged capillary tube. Plugs from oil or decomposition products of the filter drier may form in the circulation system. This prevents the normal flow of freon. The compressor tries to push the refrigerant, works with overload, but cooling does not occur.
| Symptom | Probable cause | Nature of compressor operation |
|---|---|---|
| The freezer does not freeze, the refrigerator is warm | Freon leakage | Works continuously, hot |
| Weak cooling, ice freezing | Clogged system | Works intermittently or constantly |
| The refrigerator turns off, but rarely | Lack of freon | Short operating cycles |
To fix these problems, you need to call a technician. It is necessary to find the leak, solder the system, replace the filter-drier and fill the refrigerator with new freon strictly by weight. It is impossible to carry out these operations independently without a vacuum pump and scales.
Faults in the compressor and start relay
The heart of the refrigerator is motor-compressor. If it is worn out, its performance decreases. The piston group loses compression, and the unit is physically unable to pump up sufficient pressure for a normal cooling cycle. As a result, the refrigerator works around the clock, trying to compensate for the lack of power.
Often, together with the compressor, it fails start relay. This small element is responsible for starting the engine and protecting against overloads. If the relay is “stuck” in the “on” position, the compressor will work without turning off, even if the temperature in the chamber has already reached normal. This can lead to burning of the motor windings.
⚠️ Attention: If you smell a burning smell or see that the compressor housing (black tank at the back) is hot to the point where it cannot be touched, immediately unplug the refrigerator. Further operation poses a risk of fire.
Diagnostics of the compressor includes measuring the resistance of the windings and checking the outlet pressure. If the windings ring normally, but there is no pressure, the compressor has “died” mechanically. In case of problems with the relay, replacing it is inexpensive and often solves the problem of continuous operation if the motor itself is still working.
Failure of the electronic control module
Modern refrigerators Biryusa are equipped with complex electronics. Control board processes signals from all sensors and controls the compressor, fans and defrost heating elements. A voltage surge in the network or a manufacturing defect can lead to a failure in the module software.
In this state, the “brains” of the refrigerator may simply “not see” the signal that the temperature has been reached and continue to drive the compressor. Sometimes it helps reboot the system: completely disconnecting from the network for 15-20 minutes. This allows you to clear errors and restart the program cycle.
If the reboot does not help, physical damage to the elements on the board (burnt tracks, swollen capacitors) or failure of the processor itself is likely. In this case, repair of the module at a service center or its complete replacement is required.
☑️ Primary diagnostics of continuous operation
Environmental influence and seasonal factors
Cannot be discounted and the conditions in which the equipment is operated. In summer, when the room temperature exceeds +30°C, it is much more difficult for the refrigerator to release heat. The condenser (grid at the back) does not have time to cool, the operating efficiency drops, and the operating time of the compressor increases. Biryusa it is much more difficult to give off heat. The condenser (grid at the back) does not have time to cool, operating efficiency decreases, and the compressor operating time increases.
This is not a breakdown, but a feature of the operation of thermodynamic cycles. However, if the refrigerator is placed in direct sunlight or in a niche without ventilation, it can run almost non-stop. In winter, if the refrigerator is in an unheated room (for example, in a country house), the oil in the compressor may thicken, which also disrupts the operating mode.
For normal operation, the refrigerator requires a microclimate. It is recommended to maintain the room temperature between +16°C and +32°C. Going beyond these limits causes the equipment to work at the limit of its capabilities or not turn on at all.
When you need to call a technician
DIY Repair is possible only in case of simple malfunctions: replacing a light bulb, adjusting legs, replacing a seal or thermostat (if you have the skills). However, there are situations when the intervention of a professional is strictly necessary.
First of all, this is any work related to refrigerant. Freon is not just a gas, it is a chemical that requires proper handling. Evacuation of the system and charging using scales are processes that cannot be performed at home without a professional tool.
Also, a master is needed if:
- 🔧 The compressor hums, clicks, but does not start, or starts for a couple of seconds and stalls.
- 🧊 A “fur coat” or ice shell has formed in the freezer, which was not there before.
- 💧 Puddles of water have appeared under the refrigerator, not associated with a clogged drainage hole.
- 🔥 There is a smell of burnt wiring or plastic.
Ignoring these symptoms can lead to repairs becoming economically unfeasible. Timely diagnosis allows you to eliminate the problem at an early stage and extend the life of your refrigerator Biryusa for many years.
⚠️ Attention: Technical characteristics and design features of refrigerators may vary depending on the year of manufacture and model. Before starting repairs, check the technical documentation or consult with an official representative of the brand so as not to violate the terms of the warranty.
Frequently asked questions (FAQ)
Can the Biryusa refrigerator not turn off because I put a hot pan in it?
Yes, this is possible. If you place a large amount of warm food in the compartment, the refrigerator will go into deep freeze mode or simply run longer than usual to compensate for the heat. However, after the food has cooled, it should return to normal mode. If this does not happen within 24 hours, look for another reason.
Is it normal for the refrigerator to hum louder when it does not turn off?
A slight increase in sound is acceptable, since the compressor is working under load. However, a strong hum, vibration or knocking indicates problems with the compressor mounting, a malfunction of the fan (in No Frost models) or wear of the internal parts of the motor. This requires attention.
How much does repair cost if a compressor burns out?
Replacing a compressor is one of the most expensive types of repairs, often amounting to 50-70% of the cost of a new refrigerator. In some cases, it is cheaper to purchase new equipment, especially if the refrigerator is more than 10-12 years old. The exact cost can be found out only after diagnostics.
Why does the refrigerator turn off, but very rarely (once every 2-3 hours)?
This may indicate a slight leak of freon, wear on the door seal, or operation in conditions of elevated ambient temperatures. The compressor can still cope with the load, but the cooling cycle is lengthened. It is recommended to check the tightness and operating conditions.