Search thermostat in brand refrigeration equipment Biryusa becomes the first priority when the equipment ceases to maintain the set temperature regime. The owner may be faced with a situation where the food in the main chamber begins to freeze or, conversely, spoil due to insufficient cold. In most cases, the root of the problem lies precisely in the temperature sensor, which requires diagnostics or complete replacement.
Understanding where this unit is located is critical for carrying out independent repairs. The design of refrigerators Biryusa has its own characteristics, depending on the year of manufacture and the specific series of the model. Incorrect determination of the installation location can lead to damage to the internal plastic or a violation of the tightness of the system.
In this article we will analyze in detail the thermostat search algorithm, consider the differences between models with a drip defrosting system and a modern one No Frost. You will learn how to safely get to the mechanism, what tools are needed and what to pay attention to when dismantling.
Main signs of a thermostat malfunction
Before you start disassembling the unit, you need to make sure that the problem really lies in thermostat. Symptoms may vary, but most often they manifest themselves in incorrect operation of the compressor. The motor-compressor can operate continuously without shutting down even when ice has already formed in the chamber.
⚠️ Attention: If the compressor hums constantly and does not turn off for more than 12 hours, and the temperature in the chamber drops below -18°C, this is a direct signal that the thermostat contacts are sticking or loss of sensitivity of its bellows tube.
The opposite situation also occurs when the equipment does not start at all. In this case, the control circuit is broken and no current flows to the engine start relay. Often the cause is oxidation of the contacts inside the sensor itself or a mechanical break in the capillary.
It is also worth paying attention to the operating cycle of the equipment. If the refrigerator Biryusa turns on too often or, conversely, takes too long breaks, the food in the chamber deteriorates, this indicates a calibration failure. thermostat. The internal spring could have weakened, and the mechanism stopped responding to changes in freon pressure in the evaporator.
- 🔊 The compressor works without interruption, creating constant noise.
- ❄️ In the refrigerator compartment an excessive amount of ice is formed or, conversely, it is too warm.
- 🔌 The unit does not turn on after defrosting, although the light is on.
- 🔄 Frequent turning on and off of the engine at short intervals.
Diagnostics should begin with a visual inspection and listening to the operation of the equipment. If you hear a clicking sound, but the compressor does not start, the problem may not be with the thermostat, but with the start relay. However, if there is no click at all when turning the knob, suspicion falls on the thermostat.
Where to look for the thermostat in different Biryusa models
Location thermostat directly depends on the type of defrosting system and the year of manufacture of the refrigerator Biryusa. In older manual defrost models, the sensor is usually hidden inside the housing, requiring partial disassembly. In newer versions, access to it is often organized through the internal panel.
In models with drip system (crying evaporator), the thermostat is most often located inside the refrigerator compartment. It can be found by removing the plastic trim on the ceiling or side wall. The capillary tube in such devices is fixed on the surface of the evaporator with special clamps.
If we are talking about refrigerators Biryusa with a system No Frostthe situation changes dramatically. Here the thermostat (or electronic sensor) is located in the air duct or behind the back wall of the freezer. Access to it is possible only after dismantling the plastic panels and, possibly, removing the evaporator.
⚠️ Attention: Design features may vary even within the same series. Always check the technical documentation of a specific model, as the manufacturer may make changes to the layout of components without notice.
It is important to note that in some budget models the thermostat can be moved outside the chambers, into the technical compartment above the compressor, but this is rare for the brand Biryusa. The main array of equipment is designed so that the sensor is in direct contact with the cooled air or the surface of the evaporator.
Instructions for searching in refrigerators with a drip system
For owners of classic models Turk search thermostat begins with the release of the refrigerator compartment. It is necessary to completely remove products, shelves and drawers to gain free access to the ceiling and the upper part of the back wall.
Carefully inspect the ceiling of the chamber. There is often a plastic panel there that hides the ceiling light and thermostat. Carefully pry up the edges of the panel with a screwdriver or plastic putty knife. Proceed with caution, as plastic becomes brittle in the cold and can crack.
After removing the panel, you will seethermostat this is a small plastic block with wires suitable for it and a thin copper tube going deep into the body. It is this capillary tube that is the sensory element that responds to temperature.
☑️ Preparation for disassembly
The thermostat can be secured using screws or plastic latches. If you see screws, they need to be removed. If there are latches, carefully press them out, being careful not to damage the mechanism. There is often a layer of thermal insulation under the sensor housing that will need to be pulled back.
- 🔍 Remove the top decorative panel in the refrigerator compartment.
- 🔧 Unscrew the mounting screws holding the thermostat block.
- 🌡️ Carefully remove body, ensuring the integrity of the capillary tube.
- 🔌 Fix the position of the wires before disconnecting (take a photo).
Peculiarities of location in No Frost systems
In refrigerators Biryusaequipped with the system No Frost, the search algorithm thermostat is significantly more complicated. Here, the air temperature sensor is usually located in the freezer compartment, since this is where the main cooling occurs.
To access the unit, you will need to dismantle the back panel of the freezer. It is attached with screws around the perimeter and sometimes with plastic latches. After removing the panel, access to the evaporator and fan will open. The thermostat in such models is often built into the air duct or attached to the evaporator body.
Particular attention should be paid capillary tube. In No Frost systems it can be hidden in a special channel inside the plastic wall. When removing the sensor, you should not pull the tube with force, as it can easily be damaged, which will lead to freon leakage and expensive repairs.
Risks during disassembly No Frost
If you remove the rear panel carelessly, you can damage the aluminum evaporator. A puncture of the evaporator will lead to the release of refrigerant and will require calling a technician with equipment for evacuation and charging.
In some modifications Biryusa No Frost An electronic control module is used, where thermocouples play the role of a mechanical thermostat. They look like little black or white “buttons” on the wires. Their location also varies: one can be in the freezer, the other in the refrigerator compartment.
Table of localization of thermostats by Biryusa series
To simplify navigation through the design of your unit, below is a summary table. It will help you navigate where exactly to look for thermostat depending on the refrigerator series Biryusa.
| Series / Model | System type | Location thermostat | Access |
|---|---|---|---|
| Biryusa 6, 8, 14 | Static (drip) | Inside the chamber, under the ceiling | Removing the top panels |
| Biryusa 10, 120, 121 | Static | Inside, behind the decorative overlay | Removing the ceiling lining |
| Biryusa 355, 356 | No Frost | Freezer compartment, behind the wall | Removing the rear panel |
| Turk 450, 451 | No Frost | Freezer air duct | Complete disassembly of the freezer compartment |
Using this table allows you to save time on searching. However, remember that the manufacturer may make design changes. If there is no assembly in the indicated location, inspect the surrounding areas, especially the attachment areas capillary tube.
The process of removing and replacing the sensor
Once you have located the thermostat, you can begin to remove it. The first step should always be to completely disconnect the refrigerator Biryusa from the power supply. Working with electrical appliances under voltage is strictly prohibited.
Carefully disconnect the wires from the thermostat terminals. Before doing this, it is strongly recommended to photograph the connection diagram or sketch the colors of the wires. Reversed polarity or connection to the wrong contact can lead to a short circuit or failure of the compressor.
Next you need to release capillary tube from the seat. It can be secured with clips or simply inserted into the hole. Act smoothly, without jerking. If the tube is frozen, allow the refrigerator to defrost completely at room temperature.
⚠️ Attention: The capillary tube of the thermostat is filled with freon gas under pressure. Damage to the tube (puncture, bend) will lead to gas escaping and the thermostat will stop working. Be extremely careful with sharp metal edges.
Installing a new one thermostat carry out the reverse order. Make sure the new sensor's sensing tube is the same length and bend configuration as the old one. If the tube is too short or long, the refrigerator will not work correctly.
- 📸 Take a photo of the wire connection diagram before removing.
- 🔌 Use insulating tape to protect the contacts.
- 🧊 Make sure that the tube fits tightly to the evaporator.
- 🔧 Check the reliability of the thermostat housing.
Setting and testing after repair
After installing the new one thermostat and assembling all panels, refrigerator Biryusa is ready for testing. Turn on the unit and set the control knob to the middle position. Usually this is division “3” or “4”.
For the first few hours, the equipment will work in enhanced mode, gaining temperature. Do not open the doors frequently to avoid interrupting the cooling process. A normal situation is when the compressor operates cyclically, taking breaks.
To accurately check the temperature, it is recommended to use an external thermometer placed in a glass of water. After 6-8 hours of operation, the temperature in the main chamber should stabilize in the range of +2...+5°C. If the indicators differ, it may be necessary to readjust the screw on the thermostat housing (if it is provided for in the design).
It is important to ensure that there are no extraneous noises and vibrations. If after replacement thermostat whistle or buzzing appears, check whether it is affecting capillary tube other structural elements. Vibration can be transmitted to the tube, creating acoustic discomfort.
Frequently asked questions (FAQ)
Is it possible to temporarily short-circuit the thermostat to make the refrigerator work?
Technically, you can connect the wires directly and the compressor will start. However, in this case, the refrigerator Biryusa will work continuously until you turn it off manually. This will lead to severe undercooling of food, ice formation and, ultimately, compressor failure due to overload. Use this method only for short-term diagnostics.
Why does the new thermostat not fit in size?
Different manufacturers and even different series Biryusa may differ length capillary tube and type of fastening. If the tube is too long, it can be carefully twisted into a ring (without bending!) and placed inside the chamber. The main thing is that the sensitive element is in the correct zone.
How to understand that the problem is not in the thermostat, but in a freon leak?
If after replacement thermostat the refrigerator works, but does not freeze, or the evaporator is only partially covered with frost (for example, only at the inlet of the tubes), this is a sign of a refrigerant leak. This is also indicated by a hot back wall (grid) when the compressor is running.
Do you need to defrost the refrigerator before replacing the thermostat?
Yes, complete defrosting is required. Moisture inside the chambers may cause a short circuit when handling electrical contacts. In addition, ice can hide the fastening elements and interfere with the safe removal of capillary tube.
Where can you buy an original thermostat for Biryusa?
It is better to look for original spare parts in authorized service centers of the brand Biryusa or specialized stores of spare parts for household appliances. When purchasing analogues, pay attention to the markings, tube length and temperature range of operation.