The situation when the Biryusa refrigerator stops starting always takes you by surprise, because it threatens food spoilage and loss of supplies. You may notice that it has become warm inside, the characteristic hum of the running motor has disappeared, and the light inside is on, indicating the presence of electricity in the network. However, despite the power supply, the unit is silent or makes only a quiet click, after which it goes quiet again.
In most cases, the problem lies in one of several typical faults in the electrical circuit or mechanics of the compressor. Diagnostics requires the consistent elimination of simple causes, such as power surges or incorrect installation, before moving on to complex repairs. It is important not to panic, but to listen carefully to the sounds that the equipment makes when you try to turn it on, as they can tell a lot to an experienced technician.
Modern models, such as Biryusa 133 or Biryusa 6, are equipped with reliable, but not eternal components. Understanding the operating principle of start-protective relay and the thermostat will help you determine whether you should call a technician or you can try to fix the problem yourself. In this article we will analyze the main failure scenarios and methods for solving them.
Primary diagnostics and external factors
Before disassembling the case and picking up the multimeter, it is necessary to exclude trivial external reasons for the lack of startup. Users often forget that a refrigerator is a complex device that is sensitive to power supply parameters. If your home experiences frequent power surges, the protective automation could block the engine from starting to prevent the windings from burning out.
Check the outlet by connecting another electrical appliance to it, for example, a hair dryer or lamp. If they work, then there is voltage in the network. It is also worth inspecting the power cord for visible damage, kinks, or signs of melting. Sometimes the problem lies in the plug connectorplug itself, which is loose and does not provide a tight contact.
⚠️ Attention: If you smell a burning smell or see sparking in the area of the plug or socket, immediately stop trying to turn it on and call an electrician. Operation of faulty wiring can lead to a fire.
Another important factor is the temperature in the room. If the refrigerator is located in an unheated garage or on a balcony, where the temperature drops below +5°C or rises above +35°C, the compressor may not start due to the viscosity of the oil or the operating characteristics of the refrigerant. In such cases thermostat may not give the command to start, considering the conditions unsuitable.
Faults in the start-up protection relay
One of the most common reasons why the Biryusa refrigerator does not start is the failure of the start-up protection relay. This small block, mounted on the compressor housing, is responsible for supplying a starting pulse to the motor winding and protecting against overloads. If the relay is faulty, the engine receives power, but cannot turn over, which is often accompanied by a characteristic click.
Inside the relay there is an inductor and a bimetallic strip. Over time, the contacts may oxidize and the spring may lose its elasticity, which leads to the chain breaking. In models with induction starter the nichrome spiral, which must heat the element to close the contacts, often burns out. Without this closure, the motor rotor remains motionless.
To check the relay, it must be carefully removed from the compressor, having first disconnected the refrigerator from the network. A visual inspection may show signs of soot or melted plastic. More accurate diagnostics are carried out using a multimeter, testing the contacts for breaks or short circuits. If the device shows infinite resistance where the circuit should be, the part requires replacement.
Replacing a relay is a simple procedure, but requires care. It is important to correctly install the part onto the compressor rod, observing the orientation indicated by the "UP" or "UP" arrow. Incorrect installation will result in the protection mechanism not working in case of overload, which can be fatal for an expensive compressor.
Problems with the thermostat and sensors
The thermostat (thermostat) is the “brain” that decides when the refrigerator needs to cool the chamber and when you can rest. If this element fails and its contacts are open, the electrical circuit to the compressor simply will not close, and the refrigerator will stand as a dead weight, even if the light bulb is on.
In older Biryusa models, such as Biryusa 3 or Biryusa 4, mechanical thermostats with a bellows tube are installed, filled with freon. If the tube is damaged or the bellows loses its tightness, the pressure inside does not change and the contacts do not close. In more modern models with electronic control, this is responsible temperature sensors, which can also fail.
Diagnostics of a mechanical thermostat is simple: you need to short-circuit the two wires coming from it directly (being careful). If after this manipulation the compressor starts, then the problem is in the thermostat. Electronic sensors are checked by measuring their resistance, which should change depending on the temperature.
| Symptom | Possible cause | Test method |
|---|---|---|
| The refrigerator is silent, the lamp is on | Thermostat is faulty | Close the thermostat contacts |
| Click, but no start | Starting relay burnt out | Ring with a multimeter |
| Humming and shutdown | Compressor jammed | Checking winding resistance |
| Chaotic switching on | Wiring problems | Visual inspection of contacts |
Replacing a thermostat requires caution, especially when working with a bellows tube. It must not be bent at an acute angle or damaged, otherwise the new regulator will also quickly fail. When installing a new sensor, it is important to correctly position its sensitive element in the chamber so that it correctly reads air temperature.
Faults of the compressor and electrical part
The compressor is the heart of the refrigerator, and if it stops, the system stops functioning. The most unpleasant situation is when all external elements are working, the relay and thermostat work, but the engine does not start. This may indicate an interturn short circuit in the windings or mechanical wear of internal components.
The test begins by measuring the resistance between the contacts on the compressor connector. Normal resistance values for the working and starting windings are usually from 10 to 30 ohms. If the multimeter shows one (open) or zero (short circuit), then electric motor it is faulty and requires replacement.
⚠️ Attention: An attempt to start a compressor with a broken winding directly, bypassing the protective relay, can lead to fire of wiring or complete failure of the unit with the release of oil.
Sometimes the compressor is electrically functional, but is jammed mechanically. In this case, when voltage is applied, it hums, trying to turn over, but the protection relay quickly turns off the power. There is a method of “wedging” by applying increased voltage, but doing this at home is extremely dangerous and is not recommended without special equipment.
Is it possible to restore a jammed compressor?
In some cases, adding a special additive to the system or short-term exposure to high voltage helps, but the (success) of such procedures is less than 10%. Most often, a complete replacement of the unit is required, since the service life of the mechanical part has already been exhausted.
If a compressor requires replacement, it is necessary to take into account not only its overall dimensions, but also its power, type of refrigerant and oil volume. Installing an unsuitable motor will lead to ineffective operation of the refrigerator or its rapid failure. Therefore, it is better to entrust the selection of an analogue to a specialist or carry out strictly according to the catalog number.
Problems with the No Frost and defrost system
In Biryusa refrigerators with the No Frost system, the failure to start the compressor may be due to a malfunction of the defrost system. If the evaporator heating element or the defrost timer fails, the evaporator becomes overgrown with a “coat” of ice, which blocks the air channels. As a result, the defrost sensor may not command the compressor to start, or the fan, which often blocks the motor in some circuits, does not start.
A defrost timer is a mechanical or electronic device that switches between the "cooling" and "defrost" modes. If its contacts are stuck in the defrost position, the compressor will not receive power. You can check it by forcibly switching the timer rod to the cooling mode (usually you need to twist the slot with a screwdriver).
It is also worth checking defrost sensor, which breaks the heating element circuit when a certain temperature is reached. If it is “broken” or, conversely, has a break, the defrost cycle is disrupted, which indirectly affects the operation of the entire unit. In models with electronic control, a sensor error can be displayed on the display in the form of a code.
☑️ Diagnostics of the No Frost system
Regular defrosting of the refrigerator helps to avoid many problems with the No Frost system. Even if the manufacturer claims full automation, preventative shutdown of the device once a year will allow you to remove contamination and check the condition of the seals, which also affect heat transfer.
When you need to call a specialist
Despite the desire to save money, there are situations when independent repairs are not only impractical, but also dangerous. If the problem lies in a freon leak, no amount of replacing the relay or thermostat will help. Signs of a leak are a swollen thermal insulation layer on the side walls, a lack of cold when the compressor is running, and oily spots at the junction of the tubes.
To eliminate a leak, the system must be evacuated, refrigerant charged, and the use of specialized equipment. Attempts to simply “top up” freon without finding and eliminating the leak will only lead to a short-term effect and damage to the compressor due to abnormal operation.
A master is also needed if the compressor itself needs to be replaced. This process includes cutting the copper tubing, soldering a new burner, installing a filter drier, and priming the system. Without experience and tools, it is impossible to perform these operations efficiently.
⚠️ Attention: Freon used in refrigerators can form toxic compounds when in contact with an open flame. All work related to depressurization of the circuit must be carried out in a well-ventilated area.
In addition, if your refrigerator is under warranty, any interference with the design, breaking seals, or replacing parts yourself will lead to loss of warranty. In this case, the only correct decision would be to contact an authorized service center.
Prevention and extension of service life
In order for the question “why the refrigerator won’t start” to arise as rarely as possible, it is important to follow the operating rules. First of all, this is to ensure adequate ventilation of the condenser. Do not move the refrigerator close to the wall, leave a gap of at least 5-10 cm for air circulation. Overheating of the compressor is one of the main reasons for its premature failure.
Regularly check the condition of the sealing rubber on the doors. If it gets dirty, wipe it with soapy water. If the rubber has lost its elasticity or is deformed, the cold will escape, forcing the compressor to work without stopping, which significantly reduces its life. Checking the tightness of the fit can be done using a sheet of paper sandwiched between the door and the body.
Also keep the rear radiator grill clean. Dust, fluff and animal hair, accumulating on the fins, act as a heat insulator, interfering with the cooling of freon. It is recommended to vacuum the grate at least once every six months.
Can a refrigerator be placed on a heated floor?
Technical instructions from most manufacturers, including Biryusa, do not recommend installation on heated floors. This creates additional heating in the lower part of the case, where important components are often located, and forces the compressor to work under increased load.
Following these simple rules will allow your Biryusa refrigerator to operate stably for many years. Remember that prevention is always cheaper than complex repairs or buying new equipment. Be attentive to the signals that your appliance gives and respond to them in a timely manner.
Why does the Biryusa refrigerator click but does not turn on?
A click usually means that the starting relay is trying to start the compressor, but the current does not pass or the motor is jammed. Most often, the relay itself is to blame (the coil burned out or the contacts burned out) or an interturn short circuit occurred in the motor windings. Diagnostics with a multimeter is required.
Is it possible to start the Biryusa refrigerator without a thermostat?
Technically, it is possible by closing the thermostat contacts directly. However, in this case, the compressor will run continuously until you manually turn it off. This will lead to deep freezing of food and possible freezing of the evaporator, as well as excessive energy consumption. This mode can only be used temporarily to check the compressor.
How much does it cost to replace the compressor on a Biryusa refrigerator?
The cost consists of the price of a new unit (from 3,000 to 8,000 rubles, depending on the model) and the cost of the work of a specialist (from 2,000 to 4,000 rubles). There may also be costs for refrigerant and supplies. The exact price can only be found out after diagnostics at a service center.
What to do if the refrigerator does not start after defrosting?
If after defrosting the refrigerator does not turn on, moisture may have gotten into the electrical contacts or into the start relay. Allow the appliance to dry completely for 12-24 hours with the appliance switched off and the doors open. If the problem does not disappear, it is likely that one of the components (for example, a heating element or sensor) failed during defrosting.