The situation when Biryusa refrigerator works continuously without going into rest mode is critical for the resource of the unit. A compressor that hums without interruption experiences enormous overload, which inevitably leads to overheating of the windings and early failure of the motor. Owners often notice this problem when the equipment starts to work louder than usual or when ice appears on the walls of the chamber even without the No Frost system turned on.
The main reason for this behavior lies in the imbalance of thermal balance: the unit cannot reach the set temperature inside the chambers. Thermoregulator continues to send a signal to start the engine, since the sensors detect an environment that is too warm. This can be caused by either a simple door leak or a serious refrigerant leak that requires the intervention of a technician.
Ignoring the problem leads to a significant increase in energy consumption and food spoilage. If you notice that your Biryusa refrigerator stops turning off, you must immediately carry out initial diagnostics. In most cases, the cause can be identified independently, without resorting to complex tools.
Malfunctions of the thermostat and temperature sensors
The most likely culprit of continuous operation is often the thermostat. This element is responsible for opening the electrical circuit when a certain temperature is reached. If the contacts are stuck or the capillary tube of the sensor has lost sensitivity, the “brain” of the refrigerator simply does not receive the command to stop. In models with electronic control, air sensors are responsible for this, which can also fail.
In older models Biryusa with mechanical control, the thermostat is located inside the refrigeration chamber. It is easy to replace it yourself if you have electrical skills. In modern versions, sensors are built into the control system, and their diagnosis requires a multimeter.
- 🔧 Stuck contacts: mechanical stuck relay in the closed position.
- 🌡️ Calibration failure: sensor shows incorrect temperature, above real.
- 💥 Capillary break: gas leak from the thermostat bellows, which is why it does not respond to cold.
To check the mechanical thermostat, you can temporarily close its contacts. If after this procedure the compressor starts, then the problem is in the regulator. However, remember that operating a refrigerator without a thermostat is dangerous - it can work until all the contents freeze or the motor burns out.
⚠️ Attention: Before replacing any electrical components, be sure to unplug the refrigerator! Working under voltage may result in electric shock or short circuit.
If your Biryusa refrigerator equipped with an electronic control system, diagnosis is more difficult. Sensor error is often shown on the display or signaled by flashing indicators. In such cases, independent repair is possible only if you have a circuit diagram and knowledge of electronics.
Refrigerant leakage and problems with tightness
The second most common reason is loss of freon. The refrigerant circulates through a system of tubes, taking heat from the chambers and releasing it into the environment. If a microcrack appears in the circuit, the gas escapes and cooling efficiency decreases. The compressor tries to compensate for the lack of cold by working 24/7, but physically cannot reach the desired temperature.
A leak can occur anywhere: in a foamed circuit, in the evaporator (especially if you carelessly defrosted the chamber with a knife) or in soldering areas. It is difficult to determine a leak visually, since freon is colorless and odorless. An indirect sign is that the condenser grille at the back remains cold or only partially heats.
Leakage symptoms develop gradually. At first, the refrigerator simply turns off less often, then the pauses become shorter, and eventually it stops turning off completely. At the same time, food in the freezer may begin to thaw, and in the refrigerator compartment it may deteriorate faster than usual.
Restoring tightness is a task for professionals. The technician will find the leak using a leak detector, seal the damage and fill the system with new freon. It is impossible to carry out this work independently without a vacuum pump and a pressure gauge station.
Is it possible to fill a refrigerator with freon yourself?
Theoretically, it is possible if you have a gas cylinder and hoses, but without creating a vacuum in the system, air and moisture will remain inside. This will lead to the formation of an acidic environment, which will “eat” the compressor from the inside in a few months.
Wear of the sealing rubber and loss of tightness
Often the problem lies not in the “insides”, but in a banal leak of the door. The sealing rubber dries out, cracks or deforms over time. Through the resulting cracks, warm air from the room constantly flows into the chamber. Sensors detect an increase in temperature and command the compressor to work harder.
You can check the tightness using a simple sheet of paper. Clamp the sheet with the door around the perimeter. If it pulls out easily, without resistance, it means that the seal does not fit in this place. Also inspect the rubber for cracks and dirt.
- 🧹 Contamination: Adhered dirt prevents a tight fit.
- 📉 Aging: The rubber has lost elasticity and does not straighten.
- 🚪 Door warp: hinges sagged, and the door is warped.
If the rubber is simply dirty, wash it with warm water and soap. If it is deformed, try to restore its shape using a hair dryer (gently heating and straightening) or boiling water. In case of serious damage, the seal will need to be replaced.
⚠️ Attention: Do not use aggressive chemicals or abrasives to clean the seal. This will accelerate the aging process of the rubber and lead to its cracking.
Sometimes the door does not close tightly because the refrigerator is not level. Check the position of the unit for level. The legs must be adjusted so that the door closes by itself under its own weight if it is opened 45 degrees.
Faults of the compressor and start relay
The most expensive and complex unit is compressor. If it is worn out, its performance decreases. The motor hums, trying to create pressure, but cannot pump enough freon. As a result, the temperature does not drop and the cycle is not interrupted. Also, the starting relay, which is responsible for starting the engine, often fails.
Signs of problems with the compressor: the motor housing is too hot (you cannot touch it with your hand), a humming sound with a metallic clang, or, conversely, quiet, unnatural operation. If the relay is faulty, the compressor may try to start, click and immediately stall, or run continuously.
Diagnostics of the compressor requires measuring the outlet pressure and current. At home, you can only evaluate external signs and check the resistance of the windings with a multimeter. Replacing a compressor is a complex procedure that requires soldering tubes and charging with freon.
☑️ Compressor diagnostics
It is important to distinguish between the operation of an inverter and a conventional compressor. In models Biryusa with inverter control, the absence of pauses in operation may be the norm under high load, since they do not turn off completely, but change speed. But if the temperature does not hold, this is a malfunction.
Influence of external factors and operating conditions
Sometimes the refrigerator is working properly, but operates in inappropriate conditions. Placing it next to a radiator, stove, or in direct sunlight forces the unit to work at its limit. The temperature in the room also affects: if the room is hotter than +30°C, a standard refrigerator may not cope.
Loading with warm foods is another reason. If you put a pot of hot soup in the chamber, the refrigerator will work until the entire volume has cooled. This creates extreme stress on the system.
The table below shows how various factors affect the operating time of the compressor:
| Factor | Influence on operation | Recommendation |
|---|---|---|
| Temperature in room > +30°C | Increasing operating time up to 80% | Ventilate the room, remove from heat sources |
| Loading warm products | Long continuous operation (up to 12 hours) | Cool products to room temperature |
| Densely packed chambers | Impaired air circulation | Leave gaps between products at the walls |
| Ice layer > 5 mm | Reduced evaporator efficiency | Regular defrosting |
It is also worth checking whether the “Super Freeze” function is turned on (if your model has it). In this mode, the refrigerator operates without interruption using a timer or manually until you turn off the function.
Self-diagnosis algorithm
To understand why Biryusa refrigerator does not turn off, proceed sequentially. Do not rush to call a specialist until you have ruled out simple causes. Start with a visual inspection and checking the operating conditions.
- Make sure the door closes tightly and the seal is clean.
- Check whether the fast freezing mode is turned on.
- Assess the room temperature and location refrigerator.
- Listen to the operation of the compressor and check the heating of the condenser at the back.
If, after defrosting and checking the tightness of the door, the situation has not changed during the day, a technical malfunction is likely. In this case, professional repairs are required.
⚠️ Attention: The characteristics and location of elements may vary depending on the specific model and year of manufacture. Always check the technical documentation of your device before disassembling.
Frequently asked questions (FAQ)
How long should the Biryusa refrigerator work normally?
Under normal conditions, the operating cycle is approximately 15-20 minutes of work and 20-30 minutes of rest. Working time should not exceed 50-60% of the total time. If the unit works for 40 minutes and rests for 10, this is already a sign of overload.
Is it possible to operate a refrigerator if it does not turn off?
For a short time - yes, to finish eating food. But long-term operation (more than a day) will lead to overheating of the compressor and its combustion. The service life of the motor in this mode is calculated in days, not years.
Why does the refrigerator not turn off for a long time after defrosting?
Immediately after defrosting, the chambers need time to gain temperature. In the first 4-8 hours, continuous operation is acceptable. If after a day the mode has not returned to normal, look for a malfunction.
Does the refrigerator hum louder when there is a malfunction?
Not necessarily. If there is a freon leak or a thermostat failure, the sound may remain the same. A loud knock or clang indicates a mechanical breakdown of the compressor, and silence when the indicator is on indicates an electronics failure.