The situation when a household appliance refrigerator buzzes continuously is familiar to many owners of equipment. If your unit Biryusa stops pausing in operation, this is a sure signal that the cooling system is not functioning correctly. The compressor tries to compensate for the lack of cold, working to wear out, which can ultimately lead to its complete failure.
This mode of operation cannot be ignored, as it leads to a colossal waste of electricity. Moreover, the food in the chamber may begin to deteriorate due to incorrect temperature conditions or, conversely, freeze. In this material we will analyze in detail the main malfunctionsthat lead to such behavior of the equipment.
Understanding the principles of operation of the refrigeration circuit will help you quickly identify the problem. Most often, the matter lies in a violation of the tightness of the system or failures in the control electronics. Let's look at which components require your attention first when diagnosing.
Tightness failure and refrigerant leak
The most common reason for continuous operation of the engine is a banal one. freon leak. The refrigerant circulates in a closed circuit, taking heat from the chambers and releasing it into the environment. If a microcrack appears in the tubes or evaporator, the gas evaporates and the pressure in the system drops.
The compressor starts working without stopping, trying to catch up to the set temperature, which it physically cannot achieve due to a lack of working substance. In models Biryusa with the No Frost system, this can happen unnoticed by the eye until a characteristic whistle or hissing appears.
⚠️ Attention: Self-filling the refrigerator with freon is impossible without special equipment and skills. An attempt to add gas without eliminating the leak will only temporarily solve the problem, after which the situation will repeat.
Often a leak occurs at the soldering points of the tubes or in the foamed part of the housing. It is not always possible to determine this visually. If you notice that the rear grille (condenser) remains cold or only partially heats up, this confirms the diagnosis.
Why can't you ignore a freon leak?
Operating a compressor without a sufficient amount of refrigerant leads to overheating of the motor windings. The oil circulating along with freon ceases to effectively lubricate the components, which causes jamming of the piston group and expensive repairs.
Malfunctions of the thermostat and sensors
Thermostat is responsible for stopping the engine. thermostat . This is a mechanical or electronic device that reads the temperature inside the chamber. When it reaches the norm, the thermostat opens the compressor power circuit. If the sensor is “stuck” in the “on” position, the motor will hum endlessly.
In modern models Biryusa with electronic control, this function is performed by air sensors. Their readings may be distorted due to oxidation of the contacts or a software failure of the control module. Checking functionality requires using a multimeter to test the continuity of the circuit.
Sometimes the problem lies not in the sensor itself, but in its incorrect location. If the thermostat has moved and is not in contact with the evaporator, it will not feel any real cooling. In older models with a mechanical adjustment knob, the capillary tube often breaks.
Problems with the rubber seal
It would seem that a simple rubber gasket around the perimeter of the door plays a critical role. If seal lost elasticity, becomes dirty or deformed, warm air from the room constantly enters the chamber. Sensors record the temperature rise and give the command to the compressor to turn on.
The refrigerator Turk will work in increased mode, trying to cool the incoming heat. This is often accompanied by an abundant formation of a “coat” of ice on the back wall or in the corner of the freezer. You can check the tightness using a regular sheet of paper.
Clamp the sheet with the door in different places around the perimeter. If the paper comes out easily, without resistance, then the seal is broken. Also carefully inspect the rubber for cracks, tears or traces of mold that destroy the structure of the material.
⚠️ Attention: Before replacing the seal, be sure to check the model of your refrigerator. There are no universal rubber bands, and installing an unsuitable profile will lead to the persistence of the problem.
Wear of the compressor and start relay
The most expensive part of the refrigerator is compressor. Over time, its power decreases, the engine begins to work louder and longer. If the piston group is worn out, the compressor is not able to create the necessary pressure for effective circulation of freon.
In such a situation, the equipment works constantly, but produces little cold. The starting relay, the device responsible for starting the engine, also often fails. If the relay contacts are burnt or stuck, the compressor may not receive a signal to stop or, conversely, hum but not start.
Diagnostics of the compressor requires measuring current consumption and discharge pressure. If the current is below the rated value and there is no pressure, there is an interturn short circuit or mechanical wear. Replacing a motor is a complex process that requires evacuation of the system.
Errors in operation and placement
Sometimes the reason lies not in a breakdown, but in improper use. If you place Biryusu tight to the wall, the radiator on the rear panel cannot release heat. The compressor overheats and works without interruption.
Frequent opening of the door or loading hot products into the chamber also affects the operation. The system simply does not have time to compensate for heat inflows. Check whether the temperature is set on the regulator too low.
In winter, if the refrigerator is on an unheated balcony, the oil in the compressor may thicken. This leads to increased friction and performance at the limit. Always follow the instructions for the climate class of the device.
☑️ Checking the operating conditions
Comparative table of symptoms and causes
To quickly navigate the problem, use the table below. It will help to compare visible signs with a probable breakdown.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The engine is humming, there is no cold | Leakage freon | High (needs a technician) |
| Works without stopping, freezes weakly | Compressor wear | High (replacement unit) |
| Does not turn off, but freezes normal | Thermostat is faulty | Medium (sensor replacement) |
| Icing of chamber, operation 24/7 | Damaged seal | Low (replacement rubber bands) |
When you need to call a technician
If you have checked the seal and placement conditions, but the situation has not changed, professional repairs are probably required. Interfering with the refrigerant circulation system without a license and tools is prohibited and dangerous.
The technician will conduct a full diagnosis, check the pressure in the circuit and the integrity of the electronic boards. Only a qualified specialist will be able to say for sure whether it is worth repairing the old unit or whether it is cheaper to purchase a new one.
⚠️ Attention: When calling a technician, be sure to name the exact model of the refrigerator Biryusa and describe all the symptoms you notice. This will help the technician take the necessary spare parts with him.
Do not delay solving the problem. Prolonged operation of the compressor in emergency mode burns it out in a matter of days. Timely repairs will cost much less than replacing a burnt-out motor or buying a new refrigerator.
Why does the Biryusa refrigerator hum, but does not freeze?
This is a classic sign of a freon leak or capillary tube blockage. The compressor runs idle, distilling gas that does not participate in heat exchange due to insufficient quantity or lack of circulation.
Is it possible to operate a refrigerator if it does not turn off?
Short-term - yes, but this will lead to food spoilage and high electricity bills. Long-term operation in this mode is guaranteed to damage the compressor, since it is not designed to operate 24/7 without rest cycles.
How to check the thermostat at home?
You need to get to the thermostat (usually inside the chamber or behind the control panel), disconnect its contacts and close them directly. If after this the compressor stops working (with a mechanical thermostat) or starts (with electronic control), then the sensor is faulty.
What to do if the refrigerator does not turn off after defrosting?
Perhaps there is excess condensate in the system, which interferes with the operation of the sensors, or an electronics failure has occurred. Try defrosting the unit completely (at least 24 hours) and turning it on empty. If the problem persists, diagnostics are required.