The situation when the refrigerator Biryusa does not turn off is familiar to many owners of this equipment, which is famous for its reliability and simplicity of design. However, even the most durable units can fail, which manifests itself in the continuous operation of the compressor. This not only leads to a significant increase in electricity bills, but also creates the risk of complete breakdown of an expensive motor due to overheating.
The constant hum of the motor and the compressor running without interruption is a signal that the system thermoregulation has failed or the tightness of the circuit has been compromised. In some cases, the unit simply does not have time to reach the set temperature due to external factors, but most often the problem lies in the internal components. It is important not to ignore these symptoms, since long-term wear and tear can lead to a wedge of the piston group.
In this article we will look at the main reasons why your Biryusa refrigerator stopped shutting down, and consider diagnostic methods that can be used at home. You will learn how to distinguish a harmless operating error from a serious technical malfunction that requires the intervention of a technician. Understanding the principles of operation of the device will help you make the right decision on further actions.
External factors and operating errors
Before you panic and look for tools for repair, it is necessary to exclude trivial reasons associated with improper use of equipment. Often, users themselves create conditions under which refrigerator physically cannot reach the target temperature. For example, installing the unit in close proximity to heating devices or in direct sunlight causes the compressor to work in increased mode.
Another common reason is a violation of the temperature regime inside the chambers. If you have just loaded a large quantity of room temperature food or placed a hot pan, the system will take a long time to cool the volume. In such cases, Biryusa will work without stopping until the temperature balance is equalized.
Also It is worth paying attention to the position of the temperature regulator. In models with mechanical control, the slider could accidentally move to position Max or Super Freeze. In this mode, the refrigerator does not have an automatic shutdown program and will freeze until you manually return the settings to the standard position.
- 🌡️ Check if the Quick Freeze mode is set, which disables the compressor rest cycle.
- 🚪 Make sure that the door closes tightly and is not warped due to the weight of the products on the shelves.
- 📏 Maintain a distance of at least 10-15 cm from the back of the refrigerator to the wall for normal air circulation.
- 🍲 Do not place warm or hot foods in the chamber, let them cool to room temperature.
Malfunctions of the thermostat and temperature sensors
One of the most likely reasons for continuous operation is failure of thermostat (thermostat). This element is responsible for breaking the electrical circuit when the set temperature in the chamber is reached. If the contacts inside the thermostat are “stuck” in the closed position or the sensing tube has burst, the signal to turn off the compressor is simply not received.
In modern models Biryusa with the No Frost system or electronic control, instead of a mechanical thermostat, air thermostats are used temperature sensors. They can transmit incorrect data to the control module, reporting that the chamber is still warm, although in fact it is already cold there. As a result, the “brain” of the refrigerator continues to keep the compressor on.
⚠️ Attention: Diagnosing the thermostat requires caution. If the capillary tube of the thermostat is mechanically damaged, an immediate release of refrigerant may occur, so carry out all manipulations without using brute force.
To check a mechanical thermostat, the “freezing” method is often used. If, when the sensitive part of the thermostat is placed in the freezer, the contacts do not open (you cannot hear a click), then the part requires replacement. In electronic models, testing is carried out by testing the sensor with a multimeter at different temperatures.
How to check a thermostat with a multimeter?
To check, you need to remove the terminals from the thermostat contacts and put the multimeter in resistance measurement mode. At room temperature, the resistance should be close to zero (the circuit is closed). If you place the sensing element in the cold (below -5°C), the circuit should break and the device will show infinity. If this does not happen, the thermostat is faulty.
Replacing the thermostat is a procedure that can be done with your own hands if you have basic skills. The main thing is to choose an analogue with identical characteristics, since the on and off parameters for different models Biryusa may differ. An incorrectly selected thermostat will lead to incorrect operation: either the refrigerator will turn on frequently or will not turn off at all.
Problems with the start relay and compressor
If the thermostat is working properly and the refrigerator hums continuously, there may be a problem in the start relay. This small element is responsible for starting the engine and protecting it from overloads. When the relay contacts stick, voltage inside the compressor continues to flow even when the thermostat is trying to break the circuit. This is a critical malfunction that requires immediate attention.
Itself compressor can also be the source of the problem, although this happens less frequently. Wear of the piston group leads to a drop in performance: the motor runs, but does not create enough pressure to circulate freon. As a result, the temperature in the chamber does not drop to the required level, and the thermostat does not give a command to stop.
Relay diagnostics begin with a visual inspection. If traces of burning, melting, or the smell of burnt plastic are visible on the body, the part definitely requires replacement. You can also gently shake the relay: if a clear knocking sound of a broken core is heard inside, this is a sure sign of a malfunction.
- 🔌 Disconnect the refrigerator from the mains before removing the starting relay to avoid electric shock.
- 👀 Inspect the relay contacts for oxidation or burning, clean them when necessary.
- 🔨 A slight knocking sound of the relay when shaking indicates destruction of the internal mechanism.
- 🔥 Blackening of the relay body indicates a short circuit or overcurrent.
☑️ Diagnostics of the starting relay
Refrigerant leak and capillary tube blockage
The most difficult and costly to repair are problems with the refrigeration circuit. If a Biryusa occurs in the system, the compressor will work continuously, trying to compensate for the lack of refrigerant and reach the set temperature. However, due to the low pressure in the cooling system, this process becomes endless. freon leak, the compressor will run continuously, trying to compensate for the lack of refrigerant and reach the set temperature. However, due to low pressure in the cooling system, this process becomes endless.
Another common problem is clogged capillary tube. In a narrow channel where the refrigerant is throttled, an ice plug or an accumulation of oil oxidation products may form. This prevents the normal circulation of freon, and although the compressor operates at full power, there is no cold in the chambers.
It is not always possible to diagnose a leak visually, since freon is colorless and odorless. However, indirect signs may include swelling of the refrigerator wall or the appearance of rust in the places where the tubes are soldered. A blockage is often manifested by uneven cooling of the condenser (grid at the back) or a characteristic gurgling sound during operation.
⚠️ Attention: Repairing the refrigeration circuit requires special equipment (vacuum pump, pressure gauge station) and a license to work with refrigerants. It is impossible to eliminate a leak or blockage on your own without skills and tools.
If you suspect a leak or blockage, further operation of the refrigerator non-stop can completely “kill” the compressor. It is best to stop using the unit and call a specialist to carry out professional diagnostics and refill the system.
Comparison of symptoms of various malfunctions
To more accurately determine the cause of the breakdown, it is useful to systematize the observed symptoms. Different malfunctions may manifest themselves in a similar way (the refrigerator does not turn off), but have distinctive signs that help in diagnosis. Below is a table that helps differentiate the main problems.
| Malfunction | Main symptom | Additional symptoms | Nature of compressor operation |
|---|---|---|---|
| Faulty thermostat | The refrigerator freezes too much | Ice on the back wall, food freezes | Works without interruption, does not click |
| Start relay is stuck | The compressor does not stop | Smell of burning, strong heating of the motor | It hums constantly, may hum louder than usual |
| Freon leakage | Lack of cold or weak cold | Hot condenser, swelling of the wall | Works non-stop, but quietly or intermittently |
| Clogged capillary | The freezer works, the refrigerator does not | Gurgling, uneven heating of the grill | Works continuously with a high load |
By analyzing the behavior of your Biryusa unit through the prism of this table, you can significantly narrow down the troubleshooting range. For example, if the food in the main chamber has turned into ice and the compressor does not turn off, the problem is almost certainly in thermoregulation, and not in a gas leak.
Consequences of long-term operation without stopping
Ignoring the problem of continuous operation of the refrigerator Biryusa is fraught with serious consequences. First of all, the person suffers compressor, the resource of which is designed for cyclic work with periods of rest. Continuous operation leads to overheating of the windings, destruction of insulation and, ultimately, to an interturn short circuit.
In addition, continuous operation leads to the formation of excessive amounts of ice (excessive amounts of ice) in the evaporator, if We are talking about systems with automatic defrosting. An ice coat can block air channels, which will lead to spoilage of food and additional increase in load on the engine.
The financial aspect also cannot be ignored. A refrigerator operating 24 hours a day without breaks consumes 2-3 times more electricity than normal. In monthly terms, this can amount to a significant amount that could be used for repairs or the purchase of new equipment.
- 🔥 Overheating of the compressor can lead to it jamming, which will require replacement of the entire unit.
- ❄️ The formation of ice plugs in the defrost system disrupts air circulation.
- 💸 Increase in electricity costs can reach 200-300% of normal consumption.
- 📉 Reduction in the overall service life of the refrigerator due to wear of rubbing parts.
Is it possible to temporarily use the refrigerator if it does not turn off?
Can be used, but with restrictions. Be sure to control the temperature in the chambers to prevent food from spoiling or completely freezing. Defrost the unit regularly if ice forms on the walls. However, remember that this is a temporary measure and repairs are necessary as soon as possible.
Frequently asked questions (FAQ)
How long should the Biryusa refrigerator work normally?
In normal operation, the operating time ratio is about 30-40%. This means that out of one hour the compressor should work for approximately 20-25 minutes, and rest for 35-40 minutes. The exact parameters depend on the model, ambient temperature and chamber load.
Why does the refrigerator not turn off for a long time after defrosting?
After complete defrosting, the interior space and food are at room temperature. The compressor requires considerable time (sometimes up to 12 hours) to cool the entire volume to the specified values. If after a day of continuous operation the cold still does not appear, this is a sign of a malfunction.
Is it possible to repair the starting relay yourself?
Any person with minimal skills can replace the starting relay with a new one. However, repairing the relay itself (cleaning contacts, restoring springs) requires skill and is often impractical, since a new device is inexpensive and guarantees reliability.
What to do if the refrigerator is humming, but there is no cold?
This is a classic sign of a freon leak or a serious blockage of the system. In this case, continuing operation is pointless and dangerous for the engine. It is necessary to disconnect the unit from the network and call a technician to look for leaks and refill with refrigerant.