The problem of maintaining the correct temperature in the refrigerator Beko often confuses owners, forcing them to guess about the reasons for food spoilage or, conversely, their freezing. The key element in this system is temperature sensor, which controls the operation of the compressor and evaporator. Understanding where exactly it is located is the first step to successful self-diagnosis of the malfunction.
In modern models, including systems No Frost and classic crying type, the location of the sensors can vary significantly. Search errors can lead to damaged plastic or broken wiring, so it is important to clearly understand the design of your unit. In this article, we will analyze in detail the installation locations of temperature sensors in various areas of the refrigerator and freezer compartments.
Usually users are faced with the need to find this element when an error appears on the display or the refrigerator stops turning off. Thermoregulator or an electronic sensor is the “eyes” of your refrigerator, transmitting signals to the control board. If this data is distorted, the equipment begins to work chaotically, which requires immediate intervention.
Main types of sensors in Beko equipment
Before you begin disassembling, you need to understand what type of control device you are dealing with. In refrigerators Beko two types of systems are most often used: mechanical thermostats and electronic NTC sensors. Mechanical thermostat is a block with a capillary tube that responds to changes in freon or air pressure inside the tube.
Electronic sensors, in turn, are more compact and accurate elements. They are a small plastic case with two wires, the resistance of which varies depending on the ambient temperature. Such sensors are often called NTC resistors. Their location is usually more hidden than that of mechanical analogues.
It is important to note that in dual-compressor models or systems with full No Frost sensors there may be several. One is responsible for the overall temperature in the chamber, the other controls the defrosting process of the evaporator, and the third can monitor the temperature in the freshness zone. Confusion in their purpose leads to incorrect diagnosis.
⚠️ Attention: Before any manipulations with electrical components, be sure to unplug the refrigerator. Even after switching off, a life-threatening charge may remain in the control board capacitors for several minutes.
Differences between models are due to the year of manufacture and energy efficiency class. In older models, mechanics are more common, while new lines Beko almost completely switched to electronic control. Determining the type of sensor will help you understand which part of the housing will have to be removed.
Location in the refrigerator compartment
Locating the sensor in the main compartment depends on the type of control. If your refrigerator Beko has a rotary knob on the inside of the side wall with numbers from 1 to 5 or 7, then you are looking for a mechanical thermostat. It is usually hidden under a plastic cover that is secured with latches or a single screw.
On models with electronic controls and a display on the door, the sensors are often built directly into the plastic trim of the back or side wall. To get to them, sometimes it is enough to remove the decorative panel covering the lampshade or shelf. Capillary tube The mechanical sensor always goes deep into the body, towards the evaporator.
In some modifications, the air temperature sensor is located in the upper part of the chamber, under the ceiling. This is logical, since warm air rises, and the sensor should read the maximum temperature in the compartment. To access it, you will need to remove the top cover of the refrigerator compartment or the lamp shade.
- 🔍 Look for a plastic box with outgoing wires near the thermostat knob.
- ❄️ In the No Frost system, the sensor can be hidden behind the back panel inside the chamber.
- 💡 Often the sensor combined with the lighting control unit in the upper part.
If you find that the mechanical sensor has a long corrugated tube, do not try to bend it at an acute angle. Damage to this tube will lead to freon leakage from the thermoregulation system, and the device will stop responding to temperature changes. Carefully straighten it during installation.
Search for sensors in the freezer compartment
In the freezer compartment the situation is complicated by the presence of ice and a more complex design of the evaporator. In systems No Frost the defrost (defroster) sensor is a critical element. It is located directly on the evaporator fins, often inserted into a special hole in the aluminum plates or attached to them with a clamp.
To access this element, in most cases, you will need to completely defrost the refrigerator within 24 hours and remove the rear plastic panel inside the freezer. It is behind this panel that the blower fan is hidden. The defrost sensor usually has a white or black plastic tip. evaporator and a blower fan. The defrost sensor usually has a white or black plastic tip.
In freezers with manual defrosting, the thermostat can be located outside, on the body, or built into the wall. If you hear clicking noises when the refrigerator operates, but it does not turn on, the problem may be in this contact. Visually, it looks like a small box with two or three terminals for wires.
⚠️ Attention: When removing the back panel in the freezer, be extremely careful with the fan blades. Plastic becomes brittle in the cold and easily breaks if handled carelessly.
Often there is another sensor located in the freezer that monitors the air temperature, similar to the refrigerator compartment. Its task is to signal to the control board that the specified negative values have been reached. If this sensor fails, the compressor can work without stopping, causing food to freeze.
Sensors in the Fresh Zone and zero chamber
Many modern models Beko are equipped with special compartments for storing vegetables, meat or fish, where the temperature is maintained at about 0°C. In these zones additional thermal sensors can also be installed for precise control of the microclimate. They ensure independent operation of the dampers that supply cold air.
The location of the sensors in the zone Fresh Zone often varies. They can be built into the partition between the main compartment and a special area or located in the air supply duct. Getting to them is more difficult, as this requires dismantling internal partitions and sometimes even removing the door.
If you notice that the temperature in the main chamber is normal, but in the freshness zone the products either wither or freeze, the problem may lie in the local sensor or damper. Checking the integrity of the wires leading to this compartment is a top priority.
- 🥦 Fresh zone sensors are often located in the air ducts.
- 🌡️ They provide an accuracy of up to 0.5 degrees to preserve vitamins.
- 🔧 Access to them often requires removing the side walls of the refrigerator.
Do not forget that some advanced models use a system NeoFrostwhere each circuit has its own humidity and temperature sensors. This makes the system more efficient, but also more difficult to repair. An error in connecting one sensor can disrupt the operation of the entire cycle.
Diagnostics of temperature sensor faults
How to understand that the temperature sensor has failed? The most obvious sign is that the refrigerator is not working correctly: it either doesn’t freeze at all or turns everything into ice. Electronic models Beko often signal a problem with error codes on the display, for example, blinking indicators.
For accurate diagnosis it is necessary multimeter. You need to test the sensor for resistance. At room temperature, a working NTC sensor should show a certain value (usually from 2 to 10 kOhm, depending on the model). When placing the sensor in warm water, the resistance should drop, and when placed in cold water, it should increase.
If the multimeter shows an open (infinity) or short circuit (zero), the element is faulty and requires replacement. It is also worth carefully inspecting the wires: they often break at the very entrance to the sensor housing or at the junction with the control board.
| Symptom | Possible cause | Action |
|---|---|---|
| The refrigerator does not turn on | Open thermostat circuit | Ring the contacts |
| Continuous operation of the compressor | Sticking contacts or sensor failure | Replacing the sensor |
| Strong freezing | Incorrect temperature readings | Checking calibration |
| Error code on the display | Faulty NTC sensor | Diagnostics with a multimeter |
Sometimes the problem lies not in the sensor itself, but in an oxidized connector or a damaged cable that could have been pinched during installation.
Replacement process and important nuances
Replacing a temperature sensor in a refrigerator Beko is a procedure that requires care. Once you have purchased an original spare part or a high-quality analogue with identical characteristics, you can get to work. Make sure that the new sensor has the same length of capillary tube or wire as the old one.
When installing a mechanical thermostat, it is important to position the sensing tube correctly. It should fit snugly against the evaporator in the same place where the old one was. Fixation is carried out with special clamps. Weak contact will lead to a delayed reaction from the refrigerator.
Electronic sensors are simply inserted into the seat. However, if you are replacing the defrost sensor in your freezer, make sure that the installation area is completely free of scale and dirt. Using thermal paste where the sensor contacts the evaporator can improve heat transfer and accuracy of readings.
⚠️ Attention: Sensor specifications (resistance at 25°C) may vary even within the same refrigerator model depending on the year of manufacture. Always check the parameters of the new spare part with the markings of the old one.
After assembling all the components and connecting the refrigerator to the network, do not expect instant results. The unit requires time (from 2 to 12 hours) to reach operating mode and stabilize the temperature. Only after this can you draw conclusions about the success of the repair.
Frequently asked questions (FAQ)
Is it possible to temporarily short-circuit the sensor to make the refrigerator work?
Theoretically, closing the contacts of a mechanical thermostat will make the compressor work constantly. However, this is extremely dangerous: the refrigerator will not turn off, which will lead to freezing of food, overheating of the compressor and a possible fire. It is useless to short-circuit electronic sensors - the board will go into error.
Where to buy an original sensor for Beko?
It is best to look for original spare parts in authorized service centers Beko or specialized spare parts stores for household appliances, indicating the exact model (E-Nr) of your refrigerator. Markets often sell universal analogues that may not work correctly.
Why does the refrigerator freeze less quickly after replacing the sensor?
This may be due to incorrect installation of the sensitive element (loose contact with the evaporator) or the use of a sensor with other resistance parameters. Also check if ice has formed in the condensate drainage system, which often happens during long periods of inactivity.
How long does a temperature sensor last?
The average service life of temperature sensors is 5-7 years, but in conditions of constant changes in temperature and humidity they may fail earlier. Mechanical thermostats are considered more durable, but less accurate compared to their electronic counterparts.