Thermostat in the Beko refrigerator: where to look, how to check and replace

The refrigerator Beko stopped supporting the set temperature, does the compressor work without stopping or, conversely, does not turn on at all? It is highly likely that the problem lies in the thermostat, a key element of the cooling system. This small device is responsible for monitoring the temperature inside the chambers and controlling the operation of the compressor. However, before you begin the repair, 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 figure out how to independently detect the thermostat in popular models Beko (including No Frostdrip and two-chamber options), what tools will be needed for diagnostics, and what to do if the thermostat fails. You will also learn how to distinguish its failure from malfunctions of other components - for example, a temperature sensor or control board. Important: some operations require care, so if you are not confident in your skills, it is better to contact a specialist.

Before you start looking for a thermostat, make sure that the problem is not due to simpler reasons: a loose door, overloading of products or a power failure. If the symptoms point specifically to the thermostat, read on.

What is a thermostat and how it works in a Beko refrigerator

A thermostat (or thermostat) is electromechanical or electronic devicethat measures the temperature inside the refrigerator/freezer compartment and sends signals to the compressor to turn on or off. Models Beko most often use mechanical thermostats of brands K59, K57, K50 (manufactured by Danfoss or Ranco), and in new series - electronic sensors controlled via a board.

The principle of operation is simple:

• 🔄 Capillary tube The thermostat is filled with refrigerant, which reacts to temperature changes.
• 📉 As the temperature rises, the pressure in the tube increases, the contacts close - the compressor turns on.
• ❄️ When the temperature drops to a predetermined level, the contacts open - the compressor stops.

In electronic models Beko (for example, series CS or GNE) instead of a mechanical thermostat, thermistor —a resistance sensor that transmits data to the control board. Such systems are more accurate, but more difficult to diagnose.

The main signs of a thermostat malfunction:

• ❌ The compressor works without stopping or does not turn on at all.
• ❄️ The refrigerator compartment is too cold (food freeze), but in the freezer - on the contrary, it is warm.
• 🔥 The light inside is on, but there is no cooling.
• 🔄 The temperature fluctuates chaotically, does not correspond to the settings.

Where is the thermostat in the Beko refrigerator: typical places

The location of the thermostat depends on refrigerator designs and its model. Below we will look at the most common options for appliances Beko.

1. Single-chamber refrigerators

In most single-chamber models (for example, Beko RCSK 250M20), the thermostat is located inside the refrigerator compartment, under a plastic cover or next to the lighting lamp. To get to it:

1. Unplug the refrigerator.
2. Remove the shelves and drawers blocking access to the top of the chamber.
3. Unscrew the screws (or snap off the latches) of the plastic casing that covers lamp.
4. The thermostat will be fixed on the back wall, a capillary tube (thin metal tube) is suitable for it.

2. Two-chamber refrigerators with mechanical control

In models like Beko CN 325220 or Beko CS 340220 the thermostat is usually located:

• 🔹 B upper part of the refrigerator compartment (similar to single-chamber), but can be hidden deeper - behind the panel controls.
• 🔹 In some series - in the freezer camera (for example, in Beko DN 160220), next to the evaporator.

To find it:

1. Turn off the power.
2. Remove the temperature control knob (it is secured with latches or a screw).
3. Under it you will see a plastic panel - unscrew it.
4. The thermostat will be attached to the body, with a connected capillary tube.

3. Refrigerators with the No Frost system

In models No Frost (for example, Beko GNE 110620), the thermostat can be replaced with temperature sensor, which transmits signals to an electronic board. In this case:

• 🔍 The sensor is usually located on the evaporator (in the freezer) or on the back wall of the refrigerator compartment.
• 🔌 It is connected to the control board by wires, and not by a capillary tube.
• 🛠️ To access you will have to remove the internal panel (in No Frost this is more difficult than in drip models).

⚠️ Attention: In refrigerators Beko s No Frost often installed two sensors - separately for the refrigeration and freezer compartments. If only one is faulty, the second may continue to work, which complicates diagnostics.

4. Electronic models with a display

Modern refrigerators (for example, Beko BCD 165) instead of a mechanical thermostat are used electronic control unit with thermistors. In this case:

• 📱 Temperature sensors are located inside the chambers (usually on the back wall).
• 🖥️ The control board itself is located on the back of the refrigerator, under a metal cover.
• 🔧 For diagnostics you will need a multimeter and a connection diagram (it can be found in the instructions for the model).

If your model does not fall into the described categories, check the documentation or look for a diagram on the Internet using the exact name of the refrigerator (for example,"Beko RCSK 310M20 thermostat circuit").

How to distinguish a mechanical thermostat from an electronic sensor?

A mechanical thermostat has a capillary tube and is connected directly to the compressor through contacts. An electronic sensor (thermistor) looks like a small plastic cylinder with wires connected to the control board in refrigerators. No Frost sensors are usually used, and in older drip models, mechanical thermostats are used.

How to check the Beko refrigerator thermostat for functionality

Before replacing the thermostat, make sure that the problem is in it multimeter (or a tester) and. electrical engineering.

Checking the mechanical thermostat

1. Disconnect the refrigerator plug in and remove the thermostat (as described above).
2. Disconnect the wires from the thermostat contacts (better take a photo of the connection diagram!).
3. Switch the multimeter to mode diagnosis (or resistance measurements).
4. Attach the probes to contacts 3 and 4 (usually they are signed). At room temperature, the contacts should be closed (resistance ~0 Ohm).
5. Immerse the capillary tube in ice for 10-15 minutes. The contacts should open (resistance → ∞).
6. If the contacts do not open/close, the thermostat is faulty.

Checking the electronic sensor (thermistor)

To check the thermistor:

1. Disconnect the sensor from the control board.
2. Measure its resistance at room temperature (usually 4–6 kOhm for Beko).
3. Immerse the sensor in hot water (~50°C) - the resistance should decrease.
4. If the resistance does not change or is equal to 0/∞ - the sensor is faulty.

⚠️ Attention: In refrigerators with electronic control, a sensor malfunction may appear error code on the display (for example, E1, E2). Look for decoding of the code in the instructions for the model.

Step-by-step instructions for replacing the thermostat in a Beko refrigerator

If the thermostat is faulty, it needs to be replaced. To do this:

1. Buy

• 🛒 Buy analog thermostat (for example, Danfoss 077B6334 for Beko RCSK or K59-L1934 for Beko CN). For electronic models, you need an original sensor.
• 🔧 Prepare the tools: screwdriver (Phillips/flat), pliers, multimeter.
• ⚡ Unplug the refrigerator and defrost it (if required).

2. Removing the old thermostat

1. Remove the plastic cover. (as described in the section on finding a thermostat).
2. Disconnect the wires from the contacts (remember or take a photo of the order!).
3. Carefully remove the capillary tube from the mounts (do not bend it!).
4. Unscrew the thermostat from the body.

3. Installing a new thermostat

1. Fix the new thermostat in place of the old one.
2. Connect the wires in the same order (usually the contacts are labeled: 3, 4, 6).
3. Lay the capillary tube so that it does not touch the walls of the chamber (it may trigger falsely heating).
4. Close the lid and return the shelves.

4. Checking operation

Connect the refrigerator to the network and set the average temperature after 1-2 hours:

• ✅ The compressor turns on and off. cyclically.
• ✅ The temperature in the chambers corresponds to the settings.
• ✅ There is no extraneous noise or constant operation of the motor.

⚠️ Attention: If, after replacing the thermostat, the refrigerator Beko still does not cool, the problem may be in compressor, start relay or leakage freon. In this case, professional diagnostics are required.

Table: Beko models and location of thermostats

If your model is not in the table, check its location in the instructions or on repair forums (for example, MasterCity or 220-Volt).

Common mistakes when finding and replacing a thermostat

Even experienced craftsmen sometimes make mistakes that lead to repeated breakdowns. Here's what you cannot do when working with a thermostat Beko:

• 🔌 Do not unplug the refrigerator before work - this is life-threatening and can burn the control board.
• 🔧 Use the wrong thermostat —even if it looks similar, the response parameters may differ.
• 📏 Kink or shorten the capillary tube —this will disrupt its operation.
• 🔄 Confuse the wires when connecting —an incorrect connection can damage the compressor.
• ❄️ Ignore checking after replacement —if the thermostat is installed incorrectly, the refrigerator will not work correctly.

Also, many people forget that in some models Beko (for example, No Frost) the thermostat may be not the only cause of the malfunctionIf the problem persists after replacement, check:

• 🔋 Compressor start relay.
• ⚡ Control board (in electronic models).
• ❄️ Freon leak (if the compressor works, but does not cool).

⚠️ Attention: In refrigerators Beko with an inverter compressor (for example, Beko ProSmart Inverter), replacing the thermostat may require reflashing the boardIn this case, you cannot do without a service center.

When is it better to contact a specialist

Not all thermostat failures can be repaired yourself. Contact a specialist if:

• 🔧 Refrigerator Beko s electronically controlled, and you are not confident in diagnosing the sensors.
• ⚡ After replacing the thermostat, the compressor does not turn on or works without stopping.
• 💰 The cost of a new thermostat exceeds 30% of the price of the refrigerator (in this case it is more advisable to buy new equipment).
• 🔄 Refrigerator under warranty - self-repair cancels its.
• ❄️ You suspect freon leak (signs: the compressor is hot, but does not cool).

Average cost of replacing a thermostat in a service center for Beko:

• 💲 Mechanical thermostat: 1500–3000 rubles. (with work).
• 💲 Electronic sensor: 2500–4500 rubles. (depending on the model).

If you decide to repair it yourself, but are not confident in your abilities, start with diagnosis with a multimeter - this will help avoid unnecessary expenses on spare parts.

FAQ: Frequently asked questions about the thermostat in the Beko refrigerator

🔍 How to understand that it is broken. thermostat, not a compressor?

If the compressor does not turn on at allcheck:

1. Power supply (is the light inside lit?).
2. Ring the thermostat - if the contacts are not shorted, it is faulty.
3. Listen to the compressor: if it is hums, but does not startthe problem may be in the start relay, not in the thermostat.

If the compressor works without stoppingmost likely the thermostat (or sensor in electronic models) is to blame.

🛠️ Can the thermostat be repaired or just replaced?

Mechanical thermostats cannot be repaired —they are only being replaced. In rare cases, you can clean the contacts if they have oxidized, but this is a temporary solution.

Electronic sensors (thermistors) also cannot be repaired - they are replaced with new ones.

🔄 What to do if after replacing the thermostat the refrigerator does not cool?

Possible reasons:

• 🔌 Incorrect wire connection (check the diagram!).
• 💥 Failure of the compressor or start relay.
• ❄️ Freon leakage (required refueling).
• 🖥️ Malfunction of the control board (in electronic models).

Repeat the diagnostics or contact the technician.

📄 Where can I find the thermostat connection diagram for my Beko model?

You can find the diagram find:

• In operating instructions (section "Electrical diagram").
• On the website Beko in section support (enter model refrigerator).
• On repair forums (for example, MasterCity, 220-Volt).
• On the thermostat cover or control board (sometimes there is a sticker with a diagram).

💡 Is it possible to temporarily do without a thermostat?

Technically possiblebut highly not recommended:

• If you close the thermostat contacts directly, the compressor will work without stoppingwhich will lead to its overheating and breakdown.
• In electronic models without a sensor, the control board will not turn on the compressor.

It is better to replace the thermostat as quickly as possible or turn off the refrigerator before repair.