The situation when Biryusa refrigerator stops turning off often takes owners by surprise, causing concern for the safety of products and electricity bills. Continuous operation of the compressor is a clear signal that the cooling system cannot reach the set temperature parameters, or the control electronics have stopped receiving correct data from the sensors. Unlike short-term load surges, long-term wear-and-tear operation can lead to overheating of the motor and costly repairs.
In most cases, the problem lies not in the breakdown of the unit itself, but in external factors or violation of operating rules, which are easy to fix yourself. However, ignoring the symptoms can lead to compressor failure, and defrosting the evaporator will require calling a technician. Understanding the physics of the cooling process will help you quickly identify the source of the malfunction and make the right decision.
In this article we will analyze in detail all the possible reasons why your refrigerator Biryusa hums without interruption, and will provide a step-by-step algorithm for diagnostics. We will consider both simple user errors and complex technical malfunctions that require the intervention of specialists.
Violation of tightness and problems with the seal
The most common and easily eliminated reason for continuous operation is the loss of sealing of the chamber. If warm air from the outside constantly enters the refrigeration compartment, the system tries to compensate for the increase in temperature, forcing compressor to work in enhanced mode. Visually this may not be noticeable, but to the touch you will notice that the walls of the case or the rubber seal have become warmer than usual.
Particular attention should be paid sealing rubber to the perimeter of the door. Over time, it loses elasticity, cracks, or simply becomes overgrown with plaque, which prevents a tight fit. Even a microscopic gap leads to a constant flow of heat. To check, you can use a sheet of paper: clamp it between the door and the body in different places; if the sheet is pulled out without resistance, the tightness is broken.
⚠️ Attention: Do not try to restore the properties of old rubber using glue or sealants - this is only a temporary measure that can completely damage the material. It is better to replace the seal with a new original or high-quality analogue.
It is also worth checking whether the door itself is not warping. If hinges the door is loose or sagging under the weight of food, a tight seal will not be achieved. Adjusting the hinges is a simple procedure that often solves the problem of “not turning off” without replacing parts.
Incorrect temperature setting mode
Often users themselves cause equipment overload by setting extremely low temperature values. In models Biryusa with mechanical control, the thermostat is a knob with divisions from 1 to 7 (or Min/Max). Setting the value to the maximum forces the unit to strive for indicators unattainable in domestic conditions, which leads to work without stopping.
For normal storage of products, it is enough to maintain the temperature in the main chamber in the range from +2 to +5 degrees Celsius. If you've recently changed settings or loaded a lot of warm food, the system may run longer than usual but should go into pause mode. If this does not happen within 24 hours, it is worth reviewing the settings thermostat.
It is important to take into account external conditions. If the refrigerator is placed near a stove, a radiator, or in direct sun, the temperature sensor will record constant heating, even if it is already cold inside. In such conditions electronics or the mechanics do not give the command to turn off, since the target temperature has not been reached.
Malfunctions of the thermostat and temperature sensors
The thermostat (or thermostat) is the “brain” that makes the decision to turn on and turning off the compressor based on temperature readings. If this element fails, it may become stuck in the on position, constantly supplying voltage to the motor. In older models Biryusa with mechanical control, this is a common problem due to wear of the bellows tube or contacts.
In modern models with a system No Frost or electronic control, air sensors are responsible for control. Their malfunction or open circuit leads to the control module receiving false data that the chamber is warm. Diagnosis of such breakdowns requires a multimeter to test the circuit.
How to check a thermostat without instruments?
Remove the thermostat, lower its sensitive tube into cold water with ice for 2-3 minutes. Then ring the contacts: if the circuit is not broken (it beeps), then the thermostat is faulty and requires replacement.
Replacing the thermostat is a task that can be done with your own hands if you have basic skills. However, it is important to choose an analogue with identical parameters, otherwise the operating modes of the refrigerator may go wrong, which will lead to freezing of food or, conversely, their spoilage.
Problems with the defrosting system (No Frost)
If your refrigerator Biryusa is equipped with a No Frost system, then continuous operation of the compressor may be caused by “overgrowing” of the evaporator with ice. In normal mode Defrost heating element it turns on periodically, melting the ice on the evaporator, and the water flows into the drain. If this cycle is disrupted, the ice blocks the circulation of cold air, and the sensor does not detect cooling.
The reasons may be:
- ❄️ Burnt out defrosting heating element that has stopped heat.
- ❄️ Faulty defrost timer or control module that does not send a signal to heat.
- ❄️ Broken defrost sensor, which does not give a command to turn on the heating element.
- ❄️ Clogged drainage hole, due to why the water does not leave and freezes below.
You can diagnose the problem by completely defrosting the refrigerator (turn it off for 24 hours with the doors open). If, after defrosting, the unit worked normally and began to turn off, then the problem is definitely in the defrost system or drainage.
☑️ Diagnostics of the No Frost system
Freon leak and compressor malfunction
The most serious reason why the refrigerator Biryusa does not turn off - this is a refrigerant (freon) leak. If a microcrack has formed in the circuit, the amount of gas decreases and there is not enough of it to create the necessary pressure and cooling. The compressor tries to compensate for the shortage by working continuously, but does not produce cold (or produces very little).
Signs of a freon leak:
- 🧊 The refrigerator hums constantly, but it is warm inside.
- 🧊 The condenser grille on the rear wall is only partially cold or warm.
- 🧊 Blistering of the housing walls in the area of foaming (rare, but it happens).
- 🧊 Characteristic whistling sound in the area of the filter-drier or pipe joints.
⚠️ Attention: It is impossible to independently find and eliminate a freon leak without special equipment (leak detector, vacuum pump, pressure gauges). Attempts to simply “refuel” the refrigerator without eliminating the cause will lead to a second leak in a short time.
Also the cause may be a loss of performance yourself compressor. Wear of the piston group or valves leads to the fact that the engine hums, but does not create sufficient pressure in the system. In this case, the unit must be replaced with a new one.
Comparative table of symptoms and causes
For ease of diagnosis, we will summarize the main symptoms in a table so that you can quickly navigate the nature of the malfunction of your unit Biryusa.
| Symptom | Probable cause | Difficulty of repair | Need a technician |
|---|---|---|---|
| The refrigerator is freezing, but not turns off | Leakage, thermostat, setting | Low | Not required |
| Humming, no cold, dry inside | Freon leak, blockage capillary | High | Required |
| Works jerkily, heavy ice | Failure of the defrost system (No Frost) | Medium | Desirable |
| The motor gets very hot, hums | Worn out compressor, dirty condenser | High | Required |
Analysis of the table shows that more than half of the problems can be solved without calling a specialist if deviations in the operation of the equipment are noticed in time. However, in cases involving a sealed circuit, it is better not to take risks.
The influence of external factors and operating conditions
Don't forget that a refrigerator is a heat pump that emits heat outside. If condenser (the black grille on the back or sides) is covered with a thick layer of dust, animal hair, or is located close to the wall, heat transfer is impaired. The compressor overheats and cannot effectively cool the refrigerant, which leads to continuous operation.
The location of the equipment is also critical. Installation near heat sources (stove, oven, radiator) or in direct sunlight forces Biryusu to work with double load. In the summer, when the temperature in the kitchen reaches +30°C, the operating time of the compressor increases naturally, but it must still go into rest mode.
Is it possible to place a refrigerator in a niche?
It is possible, but only if the clearances for ventilation are maintained (minimum 5-10 cm at the back and sides). In a closed niche without air flow, the refrigerator will quickly overheat and fail.
Also check the voltage in the network. At low voltage (< 190-200V), the compressor may not have enough inrush current to start, or the motor will overload trying to get up to speed. In such cases, it is recommended to install a voltage stabilizer.
Frequently asked questions (FAQ)
How long should the Biryusa refrigerator work normally?
Under normal conditions, the operating cycle is approximately 10-15 minutes of work and 20-30 minutes of rest. That is, the compressor must turn off. If it runs for 40 minutes or more without a break, this is a cause for concern.
Can the refrigerator not turn off due to a large amount of food?
Yes, if you loaded a lot of warm food at once, the refrigerator will work longer than usual to cool the volume. However, after reaching the temperature, it must turn off. Constant work due to food is only possible if they are constantly warm or the door is often opened.
What to do if, after defrosting, the refrigerator stops turning off again?
If complete defrosting (24 hours) did not help, then the problem is technical: the thermostat, sensor is faulty, there is a freon leak or compressor wear. It is necessary to call a technician for diagnostics.
Is it dangerous to leave the refrigerator running without stopping?
Yes, it is dangerous. The compressor is not designed for round-the-clock operation without rest; it may burn out. In addition, this leads to excessive consumption of electricity and spoilage of food due to possible freezing or, conversely, insufficient cooling in the event of a leak.
Where is the thermostat in the Biryusa refrigerator?
In most Biryusa models, the thermostat is located inside the fridge compartment (a plastic box with an adjustment knob) or under the lampshade. In some older models, it may be located outside, at the top of the case.