When the refrigerator Beko starts to malfunction - it does not turn off, it freezes poorly or, on the contrary, freezes food - the first thing to do is check the thermostat (also known as a thermostat or temperature sensor). This small device is responsible for maintaining a given climate regime in the chambers, and its malfunction leads to 70% of breakdowns associated with incorrect temperature. However, before diagnosing or replacing, you need to know exactly where is the thermostat in the Beko refrigerator - its location depends on the model, type of cooling system and even the year of manufacture of the equipment.
In this article we will analyze all possible options for placing the thermostat in refrigerators Bekofrom old ones single-chamber models to modern two-chamber ones with the system No Frost. You'll learn how to visually identify the thermostat among other parts, what tools you'll need to access it, and why in some cases it's easier to call a professional than to try to get to the sensor yourself. For clarity, we will provide diagrams and photographs of real refrigerators - this will help to avoid mistakes during disassembly.
Thermostat and thermostat: what is the difference?
Before looking for a part, it is important to understand the terminology. Refrigerators Beko (as in most other brands) use two types of temperature control devices:
- 🔹 Mechanical thermostat —an electromechanical relay with a capillary tube filled with freon. When the temperature changes, the pressure in the tube changes, which closes/opens the contacts of the compressor. Installed in models before 2015–2018.
- 🔹 Electronic thermostat (temperature sensor) is a semiconductor sensor that transmits signals to the control board. Used in modern refrigerators with a display and system
No Frost.
In everyday life, both devices are often called a “thermostat”, although the principles of their operation differ. In Beko refrigerators with mechanical control (temperature adjustment knob), the thermostat is always located inside the chamber, and in electronic models the sensor can be hidden behind the panel or even inside the evaporator.
How to distinguish one from the other? If your refrigerator:
- 🔘 Has a physical knob with numbers (1–7) - this is a mechanical thermostat.
- 🔘 It is controlled by buttons and has a digital display - this is an electronic sensor + control board.
Where to look for a thermostat in Beko single-chamber refrigerators
Single-chamber models Beko (for example, series CS 100, CS 120, RCSA 240) have the simplest device. The thermostat in them is always located inside the refrigerator compartmentnext to the lighting lamp. Here are the exact landmarks:
- Open the refrigerator door and inspect the upper part of the inner wall (from the door side).
- Above the shelf or next to the lampshade you will see a plastic box measuring ~5x5 cm with a thin tube sticking out of it (capillary). This is the thermostat.
- 2-3 wires fit into the box, and the capillary tube is attached to the evaporator (the back wall of the chamber).
To get to the thermostat:
Phillips screwdriver (PH2)
Flat screwdriver for prying up plastic latches
Tweezers (for carefully removing the tube)
Multimeter (for checking contacts)
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| Refrigerator model | Thermostat location | Access features |
|---|---|---|
| Beko CS 100 K20 | Upper right part of the camera, under the ceiling | Attached with 2 self-tapping screws. The tube goes to the evaporator along the back wall. |
| Beko RCSA 240 M20 | To the left of the lamp, under the decorative trim | You need to remove the trim by snapping 3 plastic clips. |
| Beko CS 120 M21 | In the center of the top panel | Thermostat combined with a defrost button. The tube is short and goes down. |
⚠️ Attention: In single-chamber refrigerators Beko the capillary tube of the thermostat is often attached to the evaporator using a metal clamp. When dismantling, do not pull on the tube - it can easily be damaged! It is better to carefully pry the clamp with a flat screwdriver.
Location of the thermostat in two-chamber refrigerators with drip system
Two-chamber refrigerators Beko with drip defrosting (series CN, CSD, GNE) have a thermostat in the refrigeration chamber, but its location is less obvious. There are two-chamber options:
Option 1: Inside the refrigerator compartment (classic scheme)
Similar to single-chamber models, the thermostat is located:
- 📍 Under the top shelf, next to the lamp.
- 📍 Behind plastic panel on the ceiling of the chamber (2-4 clips need to be snapped off).
- 📍 Inside the body there are temperature control knobs (in models with mechanical control).
Example: in Beko GNE 110620 the thermostat is hidden under a decorative cover above the top shelf. To remove it, you will need to:
- Remove all the shelves and drawers.
- Unscrew the 2 screws on the sides of the cover.
- Gently pull the cover towards you (it is held on plastic guides).
Option 2: Behind the back wall of the refrigerator
In some models (for example, Beko CN 325220), the thermostat is located outside the chamber and is located on compressor compartment, next to the start relay. It can be identified by:
- 🔌 A capillary tube going into the fridge compartment through a hole in the wall.
- 🔌 A box with contacts, to which 3-4 wires fit (usually red, yellow, brown).
⚠️ Attention: If the thermostat is located outside the chamber, to replace it you will have to unfold the refrigerator and remove the back cover of the compressor compartment. In this case, we recommend that you first photograph the location of the wires - they can easily be mixed up during reassembly!
How to check the thermostat with a multimeter?
To check a mechanical thermostat:
1. Remove the terminals from the thermostat contacts.
2. Switch the multimeter to continuity mode (or resistance measurement).
3. At room temperature, pins 3 and 4 (usually) should be closed (resistance ~0 Ohm).
4. Place the thermostat in a container with cold water (+4°C). If the contacts open and close again when heating, the thermostat is working.
Features of thermostats in Beko refrigerators with No Frost
Models with the system No Frost (Beko FNE 520200, Beko GNE 120630 etc.) use electronic temperature sensors that transmit data to the main board. There is no thermostat in the usual sense - instead they work:
- 🌡️ Evaporator temperature sensor - located inside the freezer, on the evaporator tubes.
- 🌡️ Temperature sensor refrigeration chamber - hidden behind the back wall, next to the fan.
- 🖥️ Control board —processes sensor signals and controls the compressor.
In such refrigerators replacing the sensor yourself requires disassembling the internal panel of the freezer and working with a soldering iron (to disconnect the wires from the board). Without experience, this can result in damage to the defrosting system or fan.
How to identify sensors:
| Sensor type | Appearance | Location |
|---|---|---|
| Evaporator sensor | Small plastic cylinder with 2 wires | On the evaporator tubes in the freezer |
| Refrigerator compartment sensor | Flat sensor in heat shrink tube | Behind the back wall, next to the air duct |
| Environmental sensor | Round disk with wires | On the control board or outside the case |
⚠️ Attention: B refrigerators Beko s No Frost sensors are often attached to double-sided tape or plastic clips. When dismantling, do not pull the wires - they are fragile and can come off the contacts!
Searching for a thermostat by model serial number
If you are not sure of the location of the thermostat, the most reliable way is to find a diagram specifically for your model. The serial number of the refrigerator Beko is indicated:
- 🏷️ On a sticker inside the refrigerator compartment (usually on the side wall).
- 🏷️ On the back wall of the case (next to the compressor).
- 🏷️ In the warranty card or instructions.
The serial number has a format like XX-XX-XXX-XXX (for example, CN-325220-XAP). Using it you can:
- Find service manual (instructions for masters) on specialized forums (for example, MasterCity or Cold Forum).
- Contact Beko service center with a request to provide a diagram (sometimes they give it for free).
- Use spare parts database (for example, EPC Beko), where they will show you by model number location of the thermostat and its catalog number.
Example of serial number decoding:
GNE 120630 XAP— model withNo Frost, electronic control.CS 100 K20—single-chamber model with mechanical thermostat.CN 325220 S—two-chamber, drip system, thermostat inside the chamber.
Frequent errors when searching and replacing thermostat
Even knowing where the thermostat is, many make mistakes that lead to new breakdowns. Here are the most common ones:
- 🔧 Confusion with the wires — when disconnecting the terminals, they do not remember their location!
- 🔧 Damage to the capillary tube - it cannot be bent or pinched. If the tube is broken, the thermostat must be replaced.
- 🔧 Ignoring the test multimeter —sometimes the problem is not in the thermostat, but in the compressor relay or control board.
- 🔧 Incorrect installation of the new thermostat —for example, if the capillary tube does not fit tightly to the evaporator, the refrigerator will not work correctly.
⚠️ Attention: In refrigerators Beko with electronic control (No Frost) after replacing the sensor, you may need resetting errors through the service menu. To do this:
- Disconnect the refrigerator from the network for 10 minutes.
- Turn on and simultaneously press the buttons
Super Cool+Super Freeze(orMode+Temp ↑, depending on the model). - Hold for 5-7 seconds until a beep appears or the indicators blink.
If after replacing the thermostat the refrigerator still does not freezes, check:
- 🔌 Compressor start relay —often fails along with the thermostat.
- 🔌 Evaporator —if it is covered with ice, the problem may be in the defrosting system.
- 🔌 Control board — in models with
No Frostit can block the operation of the compressor due to a sensor error.
When it is better to call a technician rather than repair it yourself
Despite the apparent simplicity, replacement thermostat in the refrigerator Beko can result in serious problems if:
- 🛠️ The refrigerator is under warranty - independent repair will void it.
- 🛠️ Model with
No Frostand electronic control - diagnostics required boards and sensors. - 🛠️ The thermostat is located behind the back wall of the freezer - disassembly can damage the thermal insulation.
- 🛠️ After replacing the thermostat, the refrigerator displays an error on the display (for example,
E1,E3).
Average cost of replacing a thermostat in the service center:
| Type of work | Price (rub.) | Notes |
|---|---|---|
| Fault diagnosis | 1 000–1 500 | Often free if you order repairs |
| Replacement of a mechanical thermostat | 2 500–4 000 | Includes the cost of the part (~1,500 rubles) |
| Replacement of the sensor in No Frost | 3 500–6 000 | Requires disassembly of the freezer compartment |
| Board repair control | 4 000–8 000 | Depending on the complexity of the breakdown |
⚠️ Attention: If your refrigerator BekoReleased before 2015, it may be difficult to find an original thermostat. In this case, the technician can install a universal analogue (for example, Danfoss 077B6 or Ranco K59), but it will need to be configured for a specific model.
FAQ: Frequently asked questions about thermostats in refrigerators. Beko
Is it possible to replace the thermostat in a Beko No Frost refrigerator without disassembling the freezer?
No. In models with No Frost temperature sensors are integrated into the air duct and evaporator system, so replacing them requires complete disassembly of the internal panel of the freezer. In some cases, the technician can gain access. sensor through the technological hole in the rear wall, but this depends on the specific model.
How to understand that it is the thermostat and not the compressor that is broken?
Signs of a faulty thermostat:
- 🔹 The refrigerator does not turn off (works constantly).
- 🔹 The temperature in the chambers does not correspond to the set temperature (too high or low).
- 🔹 The compressor does not turn on at all (while the light inside is on).
- 🔹 Relay clicks without starting the compressor (the thermostat does not give a signal to turn on).
If the compressor hums but does not start, the problem may be in the start relay or the compressor itself. For accurate diagnosis, you need a multimeter.
What tools are needed to replace the thermostat in the Beko CS 100?
For a single-chamber model Beko CS 100 you will need:
- 🔧 Phillips screwdriver (PH2) - for the thermostat mounting screws.
- 🔧 Flat screwdriver - for prying up the plastic latches.
- 🔧 Tweezers - for neat removing the capillary tube from the clamp.
- 🔧 Multimeter - for checking the thermostat contacts.
- 🔧 Pliers - for removing terminals from the wires.
Also prepare a replacement thermostat - a suitable model can be found by catalog number (indicated on the body of the old thermostat).
What to do if, after replacing the thermostat, the refrigerator begins to operate louder?
This is normal in the first 1-2 days, as the compressor adapts to the new thermostat. However, if the noise does not go away, check:
- 🔊 The capillary tube is installed correctly - it should be tight. adjacent to the evaporator.
- 🔊 Compressor mounting - the bolts may have become loose during disassembly.
- 🔊 State of the start relay - if it is worn out, the compressor will work with overload.
If the noise is accompanied by vibration, perhaps when installing the thermostat the refrigerant tubes have shifted.
Where to buy a thermostat for a Beko refrigerator?
Original and compatible thermostats for Beko can be found:
- 🛒 In official service centers Beko (guaranteed original, but more expensive).
- 🛒 In the spare parts markets (for example, Gardener in Moscow, Entuziastov Highway).
- 🛒 In online stores: AliExpress (cheaper, but long wait), 220-Volt, MVideo.
- 🛒 In refrigerator repair groups on social networks (they often sell used parts).
When purchasing, be sure to check the catalog number of the thermostat (for example, Beko 2405590100 for models CN series).