The situation when your Biryusa refrigerator stops turning off can frighten any owner. The hum of a compressor, which does not subside day or night, is often perceived as a harbinger of expensive repairs or complete breakdown of the unit. However, do not panic ahead of time, since in some cases the reason lies in banal violations of operating rules or external factors.
Constant operation of the motor leads to overheating of the components and a significant increase in electricity bills. It is important to understand that compressor is the heart of the refrigerator, and its continuous wear and tear can damage the equipment in a matter of days. In this article we will analyze in detail why Biryusa refrigerator it does not turn off, how to independently carry out initial diagnostics and in which cases you cannot do without calling a technician.
Before taking active steps, you need to evaluate current state of the unit. If the compressor operates for more than 24 hours without a break, and the temperature inside the chambers does not drop below normal, this indicates a serious malfunction of the cooling system. Ignoring the problem can lead to defrosting of products and failure of expensive components.
External factors and operating errors
Before looking for breakdowns inside the mechanism, it is worth excluding the influence of the external environment. Often the reason why Biryusa refrigerator not turning off is due to improper installation or environmental conditions. The unit should be kept away from direct sunlight and heating devices. If there is a heating radiator or gas stove nearby, temperature sensors can constantly record the heating, forcing the compressor to work without interruption.
Particular attention should be paid to the tightness of the door. Even a microscopic gap allows warm air from the room to penetrate into the chambers. Thermostat detects an increase in temperature and gives a command to cool. Check the rubber seals around the perimeter of the door: they should fit snugly to the body, without cracks or creases.
It is also worth checking the freezing mode. If you accidentally activate the function Super freezing (usually indicated by a snowflake or an ice crystal button), the refrigerator will operate at maximum power for up to 72 hours or until the mode is manually turned off. This is normal behavior of equipment for quickly cooling a large volume of food.
⚠️ Attention: Never place the refrigerator in a niche without ventilation gaps. Lack of air circulation around the rear radiator grill leads to overheating and continuous operation of the compressor.
Failures of the thermostat and sensors
One of the most common reasons for continuous operation is the failure of the thermostat. This mechanical unit is responsible for opening the electrical circuit when the set temperature is reached. If the contacts inside the thermostat are “stuck” in the closed position, the shutdown signal simply will not be sent to the compressor, and it will hum endlessly.
In modern models Biryusa with electronic control, sensors (thermistors) are responsible for the temperature. They transmit readings to the control module. If the sensor transmits incorrect data (for example, it shows that the chamber is +10°C, although it is already -5°C), the system will constantly require cooling. Replacing such elements requires disassembling the inner lining of the chamber.
To diagnose a mechanical thermostat, you can try knocking on its body (carefully!) or temporarily closing the contacts directly (only for experienced users!). If after this the compressor turns off, then the problem is in the regulator. In electronic models, diagnostics are only possible using a multimeter and checking the resistance.
How to check a thermostat with a multimeter?
To check, remove the thermostat and ring its contacts. In the normal state (at room temperature) the circuit should be closed. If you put the sensor in the freezer for 10 minutes, the circuit should break. If this does not happen, the part is faulty and requires replacement.
Symptoms of a malfunctioning thermostat are often accompanied by the fact that in the refrigeration chamber the food either freezes or, conversely, begins to deteriorate due to the lack of cooling cycles if the relay is stuck in the open position (although in our case we are talking about continuous operation).
Leakage refrigerant and problems with the compressor
If Biryusa refrigerator works without stopping, but does not freeze or freezes very little, there is a high probability of a freon leak. In normal mode, the refrigerant circulates through the system, picking up heat. If there is a leak, its volume is not enough to create the required pressure, and the compressor tries to compensate for this by continuous operation, but cannot reach the target temperature.
You can understand that the problem is in the refrigerant by the following signs:
- 🧊 (condenser) on the back wall remains cold or only partially warm.
- ❄️ In the freezer, a “snow coat” forms only against the wall or in one corner.
- 🔊 The compressor operates quieter than usual or with a characteristic gurgle.
Fix the leak yourself and fill the system with freon impossible. Special equipment is required to evacuate the system and accurately dose the gas. Attempts to “just add freon” without finding the leak will lead to repeated failure in a short time.
It is also worth mentioning the “hydraulic hammer” in the compressor. If oil or liquid freon gets into the system (due to improper transportation or refilling), the piston group may jam. In this case, the motor hums, but does not start, or operates with strong vibration, trying to overcome resistance.
Clogged capillary tube
The capillary tube is a thin copper channel that separates the high and low pressure zones in the cooling system. If moisture or oil breakdown products enter the circuit, an ice plug or dirt blockage may form. This blocks the circulation of refrigerant.
The symptoms of a blockage are very similar to a leak: the compressor works constantly, trying to push freon through the obstacle, but there is no cold. You can distinguish a blockage from a leak by the temperature of the filter drier (located in front of the capillary tube). When clogged, the filter may be cold or even covered with frost, while when there is a leak, it is usually warm.
Fixing this problem is a complex technical process. The technician needs to:
- 🔧 Open the system and blow it with nitrogen under high pressure.
- 🔥 Warm up the capillary tube to remove the ice plug (if any).
- 💧 Replace the filter drier with a new one (this is a mandatory procedure).
⚠️ Attention: Using open fire to warm up pipes at home is strictly prohibited! This may cause oil vapors to ignite or explode. Entrust this work to professionals.
Problems with the electronic control module
In models Biryusa of the last years of production, all processes are controlled by an electronic module. If the compressor control elements on the board are burned out (for example, a relay is stuck or a triac is broken), the shutdown signal may simply not be generated. In this case, the motor receives voltage constantly, regardless of the sensor readings.
Diagnostics of the module requires deep knowledge in electronics. Visually, you can notice blackening of the contacts, swelling of the capacitors, or a burning smell. However, often there are no external signs, and the malfunction lies in the firmware or microcircuits.
☑️ Diagnostics before calling a technician
If you notice that there are errors on the display (if there is one) or the indicators are blinking in an unusual mode, this is a direct signal of a failure in the “brains” of the refrigerator. In some cases, a full reset (hard reset) helps, but if the board has a hardware failure, it will require replacement or complex repairs at a service center.
Diagnostic table of main faults
For convenience, we systematize the main symptoms and probable causes. This will help you more accurately formulate the problem when talking with a technician.
| Symptom | Probable cause | Difficulty of repair | Do you need a technician |
|---|