A sudden stop in the operation of refrigeration equipment always becomes an unpleasant surprise, especially when perishable products remain in the chambers. The brand's two-chamber models Biryusa have proven themselves to be reliable equipment, however, even time-tested units have failures in the operation of electronic and mechanical components. If you notice that the device has stopped gaining cold or, conversely, has begun to freeze too intensely, you need to promptly identify the cause of the malfunction.
Most often, the problem lies in a violation of the tightness of the circuit, failure of the thermostat, or problems with starting. compressor. The owner can independently carry out initial diagnostics without resorting to the help of specialists, which will save time and budget. In this article we will analyze in detail why a refrigerator Biryusa may not work, what symptoms indicate a specific breakdown and how to act correctly in each situation.
Before starting a deep diagnosis, it is worth excluding trivial causes, such as lack of voltage in the network or accidental movement of the thermostat knob. The correct sequence of actions will help avoid false conclusions. Next, we will look at the technical aspects of the unit’s operation and possible causes of failures.
Primary diagnostics and checking the power supply
The first step in determining the cause of the malfunction should be to check the presence of electric current. It often happens that the problem is not in the refrigerator itself, but in the outlet or extension cord to which it is connected. Plug any other electrical appliance, such as a hair dryer or lamp, into the same outlet to make sure the wiring is working properly. If there is voltage, inspect the power cord for kinks, melting or mechanical damage.
Pay attention to indicator light inside the refrigerator compartment or on the control panel. If it does not light up when the power is on, there may be a problem with the control board or internal fuse. In some models Biryusa with the No Frost system, the indicators may flash, signaling a specific error, the code of which is indicated in the instructions.
⚠️ Attention: Never try to repair the wiring or replace the cord power supply while the refrigerator is plugged in. This can lead to electric shock.
If a visual inspection does not reveal any problems, but the equipment is still silent, the thermal motor protection relay may have tripped. In this case, you need to let the unit stand unplugged for 15–20 minutes, and then try to turn it on again. Such a pause will allow the contacts to cool down and reset the overheating error.
Problems with the thermostat and temperature sensors
One of the most common reasons why a two-chamber refrigerator Biryusa stops freezing is the failure of the thermostat. This element is responsible for turning the compressor on and off depending on the temperature inside the chambers. If the thermostat is faulty, it may not “see” that it is warm in the refrigerator and may not give a command to start the motor.
In models with electronic control, temperature control is controlled sensorslocated in different zones of the evaporator. Their failure often results in incorrect data being displayed on the display or an overtemperature alarm coming on. You can check the serviceability of the mechanical thermostat by closing its contacts directly: if the compressor is working, then the problem is in the sensor.
Symptoms of a malfunctioning thermostat often include the absence of a click when turning the regulator knob or, conversely, constant operation of the compressor without shutdowns. Replacing this element requires disassembling the inside of the refrigerator compartment and, as a rule, does not take much time from an experienced technician.
- 🔌 No response to turning the temperature control knob.
- ❄️ The compressor works continuously, causing severe freezing of the back wall.
- 🔇 Complete absence of clicks when trying changing the operating mode.
- 🌡️ The temperature in the chambers does not correspond to the set values.
Faults of the compressor and start relay
The heart of any refrigerator is the compressor, and if it does not work, no cold is produced at all. Dual-chamber models Biryusa often use one powerful compressor that cools both circuits through a refrigerant distribution system. When you try to start, you may hear a quiet hum or click, after which the engine stalls - this is a sure sign of a malfunction of the starting relay or the motor itself.
Starting relay is a small block that provides an impulse to start the engine. Over time, its contacts may burn out or the internal coil may fail. You can check it visually: if traces of burning are visible inside or the plastic has melted, the part requires replacement. Also, the relay can “stick” without disconnecting the starting winding, which leads to overheating and tripping of the protection.
Checking the compressor:1. Disconnect the refrigerator from the network.
2. Remove the rear protective panel.
3. Check the resistance of the windings with a multimeter.
4. Normal resistance: 20-30 Ohms (operating) and 3-5 Ohms (starting).
If the compressor itself hums, but does not start, or is completely silent when the relay is working, there may be an interturn short circuit in the motor windings. In this case, repairs are often not economically feasible, and the entire unit must be replaced with a new one. It is also important to check whether the compressor piston is jammed due to exhaustion.
Freon leakage and problems with the defrost system
If The refrigerator Biryusa is humming, the compressor is running, but the cold is not gaining, there is a high probability of a refrigerant leak. Freon circulates in a closed circuit, and any violation of the tightness of the evaporator or condenser tubes leads to its gradual disappearance. Symptoms of a leak are hot side walls (instead of warm) and a complete lack of cold in both chambers.
In models with a system No Frost there is often a problem with the defrost system. If the evaporator heating element, defrost timer or thermal fuse fails, the evaporator becomes covered with a “coat” of ice. This ice blocks air circulation and cold stops flowing into the refrigerator compartment, although the freezer may continue to operate.
| Symptom | Possible cause | Check method |
|---|---|---|
| Refrigerator does not freeze, compressor hot | Freon leak | Visual inspection for oil, pressure check |
| A gurgling sound is heard | Lack of refrigerant | Listening to pipes when operation |
| Ice on the back wall of the freezer | Defrost malfunction | Testing the heating element and sensors with a multimeter |
| The compressor runs without stopping | Leakage or loss performance | Measuring current consumption and pressure in the system |
To eliminate a leak, you need to find the location of the damage, solder it and fill the system with new freon. It is impossible to perform this operation independently without special equipment (vacuum pump, pressure gauge station). Attempts to simply add gas without eliminating the hole will only give a temporary effect.
Clogged capillary tube
Another technical reason why a two-chamber refrigerator Biryusa can freeze poorly is a clogged capillary tube. This is a thin element of the system through which the refrigerant passes from the condenser to the evaporator. If moisture or oxidation products are present in the system, they can freeze in a narrow place, creating an ice plug.
Symptoms of blockage often appear cyclically: the refrigerator freezes normally for some time, then stops, the compressor may overheat, and after defrosting (turning off for a day) it starts working again. This happens because the ice plug melts during inactivity, but forms again during operation.
How to diagnose a blockage?
For an accurate diagnosis, you need to open the filling pipe. If, when the system depressurizes, there is a hiss of escaping gas, but there is no cold, it means that the circulation is disrupted by the plug. You can also feel a sharp temperature boundary on the filter drier by touch: one part may be hot, the other cold or at room temperature.
Eliminating this malfunction requires purging the system with nitrogen under high pressure, replacing the filter drier and evacuation before refilling. It is important to use only high-quality refrigerant recommended by the manufacturer for a specific model Biryusa.
Mechanical damage and wear of seals
Do not forget about the physical factors affecting the operation of equipment. If the refrigerator doors do not close tightly due to worn-out seal, warm air constantly flows inside. The compressor tries to compensate for heat loss and wears out, eventually burning out or going into protection.
You can check the tightness in a simple way: clamp a sheet of paper between the door and the body in different places around the perimeter. If the sheet is pulled out too easily or falls out, then the rubber seal requires replacement or adjustment of the hinges. Also, the cause of a loose fit may be a misalignment of the door due to improper installation or overloading of the shelves.
☑️ Diagnosis of the seal
In addition, mechanical damage can be caused by careless transportation. If the refrigerator was transported lying down and turned on immediately, oil from the compressor could enter the circuit, causing water hammer or blockage. Always allow the equipment to stand upright for at least 4-6 hours after delivery.
⚠️ Attention: If you find that the seal is contaminated with grease or food, wipe it with a soft cloth and soapy water. Dirt breaks the seal as effectively as physical wear.
Frequent questions and answers (FAQ)
Why does the Biryusa refrigerator hum, but does not freeze?
Most likely, there is a freon leak or a blockage in the capillary system. The compressor idles, trying to pump missing or blocked refrigerant. You need to call a technician to find the leak and refill it.
Is it possible to replace the thermostat yourself?
Yes, if you have basic skills in working with tools. It is necessary to remove the old sensor, install a new one with similar characteristics and connect the contacts correctly. However, in models with electronic control, it is better to contact a specialist.
How long should the refrigerator rest after defrosting?
It is recommended to keep the refrigerator unplugged for at least 2-3 hours after complete defrosting, so that the moisture evaporates and the temperature of the components is equal to room temperature before restarting.
What to do if the compressor is hot but there is no cold?
This is a sign that the compressor is working, but the refrigerant is not circulating. Possible causes: gas leak, broken valves inside the compressor or clogged filter. It’s difficult to fix on your own, you need a specialist.
How often do you need to defrost a two-chamber Biryusa?
Models with manual defrosting of the refrigerator compartment require defrosting 1-2 times a year. No Frost systems in the freezer do not require defrosting, but a preventive shutdown once a year for hygiene will not hurt.