Finding the place where the thermostat on the Beko refrigerator becomes an urgent necessity when the equipment ceases to correctly maintain the temperature regime. Owners often notice that food in the chamber either freezes “to stone” or, conversely, begins to deteriorate due to insufficient cold. In most cases, the culprit of these problems is the thermostatwhich stops sending signals to the compressor.
Modern models Beko can be equipped with both mechanical and electronic control systems, which significantly affects the location of the sensors. Understanding your unit's design is the first step to a successful repair. If you are faced with a similar situation, do not rush to call a specialist, since in many cases diagnostics and replacement can be done independently if you have basic skills.
In this article we will analyze in detail where to look for this important unit in various modifications of refrigerators Beko. You will learn how to get to the thermostat, what tools are needed for dismantling and what nuances you should pay special attention to. Correct diagnostics will help save your budget and restore the functionality of household appliances in the shortest possible time.
The principle of operation and types of thermostats in Beko equipment
Before looking for where the thermostat is on a Beko refrigerator, you need to understand the principle of its operation. This device is a relay that opens or closes an electrical circuit depending on the temperature inside the refrigerator compartment. In mechanical models, a bellows tube filled with freon is responsible for this, which responds to thermal expansion and contraction.
Electronic systems, often found in more expensive models Beko, use thermistors - semiconductor elements that change their resistance as the temperature changes. The signal from them is sent to control module, which already makes a decision about starting or stopping the compressor. Understanding the type of your regulator is critical, since the methods for checking and replacing them are radically different.
What is the difference between mechanics and electronics?
A mechanical thermostat makes a characteristic click when switching modes, while an electronic one operates silently and is controlled via a digital panel on the doors.
The location of the sensor directly depends on its design. Mechanical thermostats usually have a long capillary tube that leads into the evaporator, while electronic sensors can be built directly into the chamber wall or mounted on the air ducts of the system. Finding a thermostat usually does not take much time. Most often, a mechanical thermostat is located inside the refrigerator compartment. To access it, you must carefully examine the top of the interior, usually in the upper left or right corner. No Frost.
Where to look for a thermostat in refrigerators with a drip system
In classic refrigerator models Beko With a drip defrosting system, searching for a thermostat usually does not take much time. Most often, a mechanical thermostat is located inside the refrigerator compartment. To access it, you need to carefully examine the top of the interior, usually in the upper left or right corner.
The assembly is hidden under a plastic casing or directly integrated into the lighting control unit. To dismantle, you will need to remove the temperature control knob, which is often simply pulled onto the rod, and unscrew the fastening screws. Capillary tube in such models it is fixed to the evaporator using special clamps, and its damage due to careless handling is unacceptable.
Sometimes manufacturers hide the thermostat behind a decorative panel that is secured with latches. In this case, you must proceed carefully, using a plastic spatula, so as not to damage the fragile plastic. After removing the panel, you will see the device itself, to which a bundle of wires fits and a sensitive tube comes off.
The location of the sensors in models with the No Frost system
The situation with finding the place where the thermostat on the Beko refrigerator is complicated in models equipped with the system No Frost. In such units, a mechanical thermostat is rare; its function is performed by electronic sensors (thermistors). They can be located in different areas: in the refrigerator compartment, in the freezer compartment or in the evaporator area.
Often the air temperature sensor in the refrigerator compartment Beko is hidden behind the rear plastic wall. To get to it, you will have to dismantle all the shelves, remove the side rails and carefully snap off the back panel. Underneath it lies the evaporator and air channels on which the sensors are attached.
⚠️ Attention: In No Frost refrigerators, the back wall often freezes to the body due to condensation. Do not try to tear it off by force - use a hair dryer to gently heat the perimeter and remove the plastic without breaking.
Also, one of the sensors may be located in the evaporator area in the freezer. It is responsible for controlling the defrost temperature. Access to it is usually through the back wall of the freezer, which also needs to be dismantled.
Thermostat in the engine compartment: a rare case
There is a category of refrigerators Beko, especially older models or specific modifications, where the thermostat is located outside the chambers and is located in the engine compartment. This space is located at the back of the unit, in its lower part, where the compressor and condenser grille are located.
In this case, the thermostat is mounted on a metal frame or on the compressor itself. To access it, simply move the refrigerator away from the wall and remove the rear metal cover (crankcase) that covers the engine. This arrangement simplifies replacement, since it does not require defrosting and disassembling the internal space of the chambers.
However, if you find that your model capillary tube comes from the engine compartment into the body, be extremely careful. It passes through the thermal insulation, and its damage when trying to pull out or replace the thermostat can lead to a refrigerant leak, which will require professional intervention with soldering and refilling.
Instructions for dismantling and checking the thermostat
After you have determined where the thermostat is on the refrigerator Beko, you can start removing it. This process requires care and compliance with safety precautions. Before starting any work, be sure to disconnect the refrigerator from the electrical outlet by unplugging the plug from the socket.
The process of dismantling the mechanical thermostat is as follows:
- 🔌 Remove the temperature control knob by pulling it towards you (sometimes you need to pry it off with a flat screwdriver).
- 🔩 Unscrew the screws securing the thermostat housing to the inner wall or control panel.
- 📸 Take a photo of connecting the wires, then disconnect the terminal block.
- ❄️ Carefully remove the sensitive tube from the hole in the chamber, being careful not to damage it or bend.
☑️ Preparing to replace the thermostat
To check the serviceability of a mechanical element, you can use a multimeter in dial mode. At room temperature, the contacts should be closed (if it is a refrigerator thermostat). When the sensing tube is placed in the freezer (or when exposed to cold), a click should be heard and the circuit will open. Electronic thermistors are checked by measuring their resistance, which should change with temperature changes.
If the test shows a malfunction, a new element is installed. It is important to use a thermostat with identical markings, since the response parameters for different models Beko may differ. After installation, reassemble the structure in the reverse order and check the operation of the unit.
Table of symptoms of thermostat malfunction
Understanding the symptoms helps accurately diagnose the problem before disassembly begins. Below is a table that will help compare the behavior of your refrigerator Beko with possible causes associated with the thermostat.
| Symptom | Probable cause | Action |
|---|---|---|
| The refrigerator does not turn on at all | The thermostat contacts are broken | Check the circuit with a multimeter, replace the relay |
| The compressor runs without stopping | Sticking contacts or loss of freon in tube | Urgently replace the thermostat to avoid burning out the motor |
| The food in the chamber freezes | Incorrect calibration or displacement of the tube | Check the position of the capillary tube on the evaporator |
| Frequent on and off | Short circuit or electronic malfunction | Diagnostics of the control module and sensors |
Common mistakes when replacing yourself
When trying to find and replace a thermostat on their own, refrigerator owners Beko often make mistakes that can aggravate the situation. One of the most common is ignoring labeling. Installing a thermostat with other temperature response thresholds will lead to incorrect operation: the products will either melt or turn into ice.
Another error is damage to the capillary tube during dismantling. It is very thin and fragile. If you damage it, freon will escape and the refrigerator will stop cooling. In this case, simply replacing the thermostat is no longer enough; you will need to call a technician to look for leaks, solder and refill the system.
⚠️ Attention: Never use ordinary electrical tape, which is not intended for low temperatures, to insulate the wires inside the refrigerator. In the cold, it will dry out and come off, which can lead to a short circuit.
Also, do not forget about the cleanliness of the contacts. Oxidized terminals can give the false impression that the thermostat itself is faulty. Before installing a new element, be sure to clean the contacts and make sure the connection is secure. If you are not confident in your abilities, it is better to entrust the repair to professionals.
Questions and answers (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 work. However, in this mode the refrigerator will run continuously until you turn it off manually. This will lead to deep freezing of food and increased load on the compressor, which can damage it. Use this method only for short-term diagnostics.
Where to buy an original thermostat for Beko?
It is best to look for original spare parts in authorized service centers Beko or specialized spare parts stores for household appliances. When purchasing, pay attention to the part number indicated on the body of your old thermostat, since visual similarity does not guarantee compatibility of parameters.
Why did the refrigerator begin to freeze more after replacing the thermostat?
Most likely, a thermostat with different temperature range settings was installed. The cause may also be an incorrect seating depth of the sensitive tube in the evaporator. If the tube fits too tightly to the metal or, on the contrary, hangs in the air, the temperature readings will be incorrect.
How to understand that the problem is not in the thermostat, but in the control module?
If the thermostat is working (ringing), the wires are intact, but the command to start the compressor is not received, the problem is likely in the electronic module. In models with mechanical control, if the thermostat and start protection relay are working, but the compressor is not working, it is also worth checking the integrity of the motor windings.