The situation when Biryusa refrigerator starts to work in enhanced mode, turning food into ice lumps is a common complaint among owners of this equipment. Instead of fresh vegetables and chilled milk, you find frozen lumps, and a thick crust of frost forms on the walls of the chamber. This is not just an inconvenience, but a signal that the temperature control system has failed or is not working correctly.
Excessive cooling is often accompanied by continuous operation of the compressor, which does not turn off even after reaching the set parameters. Owners of models with mechanical control and electronic systems with No Frost encounter this in different ways, but the result is the same: increased energy consumption and the risk of engine failure due to overload. Biryusa units are known for their reliability, but they also require attention to the settings and condition of the seals.
Before Call a specialist, it is worth carrying out the initial diagnosis yourself. In many cases, the problem lies in a banal door leak or incorrect position of the regulator. However, ignoring the symptoms can lead to more serious consequences, including failure compressor or swelling of the evaporator heat exchanger. In this article we will analyze in detail the algorithm of actions for identifying and eliminating the malfunction.
Analysis of temperature settings
The first step in diagnostics should always be checking the current thermostat settings. In mechanically controlled models, such as Biryusa 6 or Biryusa 8, the regulator is a rotary knob with divisions from 1 to 5 or 7. If the knob is set to the maximum value, the refrigerator will work almost non-stop, trying to reach extremely low temperatures, which leads to freezing of food in the main chamber.
In electronic models with a display, the situation may be more complicated due to a controller failure or an error in the logic of the board. The user may see a normal temperature on the screen, for example +4°C, but the actual temperature inside will be -10°C. This indicates a desynchronization of the sensor readings and the real state inside the camera. It is necessary to reset the settings to factory values to eliminate a software glitch.
Pay attention to seasonality. In the summer, when the ambient temperature in the kitchen is high, users often turn the thermostat knob to maximum to “increase the cold.” This is a serious mistake: the thermostat does not regulate the compressor power, it only sets the shutdown temperature. When set to maximum, the engine operating cycle becomes infinite.
⚠️ Attention: If after moving the regulator to the middle position (usually division 3) and waiting 12 hours the situation has not changed, the problem is of a technical nature and requires intervention in the unit.
Checking the tightness of the door seal
One of the most common reasons why Biryusa refrigerator it is very cold is a loose fit of the door. If warm, humid air from the room constantly penetrates into the chamber through the cracks, the cooling system tries to compensate for the heat gain by working in enhanced mode. As a result, a “fur coat” grows on the back wall, and the food at the back wall freezes.
Deformation of the rubber, accumulation of dirt in the folds or weakening of the magnetic tape over time lead to loss of tightness. A visual inspection may not reveal any defects, so a simple test with a piece of paper is recommended. Press the door around the perimeter of the sheet and try to pull it out. If the paper is pulled out without resistance, it means that the seal does not fit in this place.
It is also worth checking the geometry of the door itself. If the refrigerator was tilted during transportation or stood on an uneven floor for a long time, the door could become deformed. In such cases, even a new seal will not save the situation without adjusting the hinges. Mechanical damage to the seal, such as cracks or tears, requires immediate replacement of the element.
☑️ Diagnosis of the seal
Malfunctions of the thermostat and temperature sensors
The thermostat (thermostat) is the “brain” that commands the compressor to turn on or off. If in mechanical models Biryusa 133 or Biryusa 134 the thermostat contacts stick in the closed position, the compressor receives current constantly and does not stop. This leads to deep freezing of the entire contents of the chamber.
In systems with electronic control and No Frost, air sensors are responsible for temperature control. If the sensor “lies” and transmits to the control module a signal that the chamber is +10°C (although in fact it is already -5°C), the controller will keep the compressor on. Replacing the sensor in such models often solves the problem.
Diagnostics of the thermostat requires a multimeter. When the temperature drops, the sensing element should open the circuit. If the continuity test shows contact at low temperatures, the part is faulty. It is important to use original spare parts or high-quality analogues, since cheap Chinese thermostats often have a different temperature threshold.
⚠️ Attention: Before replacing the thermostat, be sure to unplug the refrigerator. Working with live electrical components is life-threatening.
How to check the thermostat without disassembling?
Remove the regulator knob and gently tap the thermostat body. If after knocking the compressor turns off, it means that the contacts are stuck mechanically, and the part requires replacement.
No Frost system problems and refrigerant leakage
Owners of models Biryusa 135 KShN and other units with the No Frost system may encounter a situation where the freezer is working normally, but there is food in the refrigerator compartment freeze at the back wall. This often indicates a violation of air circulation or a partial leak of freon.
When a refrigerant leaks, the pressure in the system drops. The compressor tries to compensate for the lack of cooling capacity by working without interruption. As a result, the evaporator in the freezer is covered with ice unevenly, and in the refrigerator compartment the temperature drops below normal due to constant airflow. The defrost timer or heating element of the evaporator may also fail.
Clogging of the capillary tube or air outlet channels also leads to local hypothermia. If the blower fan operates continuously or does not switch air flows correctly, cold air blows directly onto the food, bypassing the control damper.
Comparison of symptoms for different types of faults:
| Symptom | Thermostat | Leakage freon | Seal |
|---|---|---|---|
| Compressor operating mode | Does not turn off | Works for a long time, short pauses | Works longer than usual |
| Frost on the back wall | Uniform layer | Partial or at the tube entrance | Only at the door or along the edges |
| Temperature in the chamber | Very low (-5...-10°C) | Can be normal or increased | Increased (+8...+12°C) |
| Operation sound | Monotonous hum | Gurgling, hissing | Normal |
Influence of location and conditions operation
Incorrect installation of the refrigerator Biryusa can become a hidden cause of problems with temperature conditions. If the unit is placed close to a wall or in a niche with no gaps for ventilation, the heat from the condenser is not removed effectively. The system begins to work with overload, which can lead to failures in thermoregulation.
Placing next to heat sources (batteries, stoves, direct sunlight) forces the ambient temperature sensors (if any) or the very logic of the unit to react to external heating. The refrigerator tries to cool the chamber, ignoring the fact that it is already cold inside.
The loading of the chamber also plays a role. If the refrigerator is filled to capacity with food, air circulation is disrupted. Cold flows cannot be evenly distributed, forming zones of local supercooling. There should be a gap of at least 2-3 cm between the products and the back wall.
Please note that technical specifications and installation requirements may be updated by the manufacturer. Always check the current instructions for your specific model, since the design of different years of manufacture may differ.
Algorithm for self-troubleshooting
If you find that Biryusa refrigerator it is very cold, act consistently. First, defrost the unit completely (at least 24 hours with the doors open). This will remove ice jams and reset electronic errors. After defrosting, turn on the empty refrigerator and set the regulator to the average value.
Carry out monitoring during the day. Place a regular thermometer in the chamber to check the actual temperature. If after 5-6 hours of operation the temperature drops below 0°C with the regulator in the middle position, the problem is in the automation (thermostat or sensor). If the temperature remains constant, but the compressor hums without stopping, there may be a leak.
To replace the thermostat in mechanical models, you will need to remove the plastic lining inside the chamber, disconnect the capillary tube (carefully so as not to damage it) and replace the control unit. In electronic models, replacing the sensor is usually done by disassembling the back wall or ceiling of the chamber.
☑️ Action plan for severe freezing
Is it possible to operate the refrigerator if it gets very cold?
Short-term exploitation is possible, but undesirable. Constant operation of the compressor without rest cycles leads to its overheating and eventual combustion of the windings. In addition, products lose their taste and vitamins when deep frozen, intended for the freezer.
Why, after defrosting, did the Biryusa refrigerator begin to freeze strongly again?
If defrosting helped only for a short time (1-2 days), then the reason is not ice, but a faulty component. Most likely, the thermostat does not open the circuit when the desired temperature is reached, or the No Frost sensor transmits incorrect data to the control board.
How much does it cost to replace the thermostat in the Biryusa refrigerator?
The cost consists of the price of the spare part and the work of the technician. The thermostat itself is relatively inexpensive, but the work requires disassembling the chamber and evacuating the system (if the capillary part is changed) or simply replacing the electrical part. It is better to check the exact price in