Connecting the thermostat to the Biryusa refrigerator: a step-by-step guide with diagrams

Refrigerators Biryusa are known for their reliability, but even in them, over time, the thermostat fails - the key element responsible for maintaining the set temperature. If your unit stops freezing, constantly works without stopping, or, conversely, does not turn on at all, the problem with a 90% probability lies in this unit. Replacing a thermostat is a task that you can handle yourself, without resorting to the services of a specialist. However, accuracy is important here: incorrect connection can result in a short circuit or failure of the compressor.

In this article we will look at how to connect a thermostat to a refrigerator Biryusa models KShD-240, KShD-260, B-130 and other popular TV series. You'll learn what tools you'll need, how to locate and remove the old thermostat, and how to properly connect the wires to the new unit. We will pay special attention to the typical mistakes that beginners make and give advice on diagnosing the malfunction before starting repairs.

Before you start working, make sure that the problem is with the thermostat. To do this, just check it with a tester (multimeter) or temporarily close the relay contacts - if the refrigerator starts working after that, the diagnosis is confirmed. Also pay attention to indirect signs: if ice appears in the chamber on the back wall or the compressor turns off too rarely, this is a signal to replace the thermostat.

1. Signs of a malfunctioning thermostat in Biryusa refrigerators

The thermostat (or thermostat) is temperature relaythat controls the operation of the compressor. When the chamber becomes too warm, the thermostat contacts close and the motor turns on. When the set temperature is reached, the circuit opens and the compressor turns off. If this mechanism breaks down, the refrigerator stops responding adequately to temperature changes.

Main symptoms of the malfunction:

• 🔴 The compressor runs nonstop —the thermostat does not open the circuit and the motor overheats.
• ❄️ Frosting of the rear wall —due to the constant operation of the compressor, ice builds up on the walls.
• ⚡ The refrigerator does not turn on —if the thermostat contacts do not close, the compressor does not receive power.
• 🌡️ Temperature mismatch — in the chamber is too warm or cold, despite the settings.
• 🔊 Clicks without starting the motor —sounds of relay operation are heard, but the compressor does not start.

On models Biryusa KShD-240 i KShD-260 the thermostat often fails due to power surges or natural wear and tear. In old refrigerators (for example B-130), the problem may lie in oxidation of contacts or mechanical damage to the capillary tube of the thermostat. Before changing the part, try cleaning the contacts with alcohol - sometimes this temporarily solves the problem.

⚠️ Attention: If the refrigerator Biryusa was manufactured before 2010, it may have an old-style thermostat (for example, TAM-112 or TAM-133). For such models, only original spare parts are suitable - modern analogues may not be the same in fastenings and characteristics.

2. Tools and materials for replacing the thermostat

To replace the thermostat yourself, you do not need professional equipment. A basic set of tools that is found in every home is enough. The main thing is to choose the right new thermostat. For refrigerators Biryusa the following models are most often used:

• 🔧 TAM-112-1M - for single-chamber refrigerators (B-130, B-140).
• 🔧 TAM-133-1M — for models KShD-240, KShD-260 and similar ones.
• 🔧 K-59 or RTK-3 - universal thermostats suitable for many Soviet and modern refrigerators.
• 🔧 Danfoss 077B6 is an imported analogue, compatible with most Biryus after 2005.

Before purchasing, check the markings on the old thermostat - it is usually printed on body. If the inscription is erased, take the part with you to the store for comparison. Also pay attention to length of the capillary tube —it should match the original (usually 0.8–1.2 m).

List of required tools:

If this is your first time repairing a refrigerator, we also recommend preparing a camera or smartphone. Take a photo of the wire connection diagram to the old thermostat before disconnecting them - this will help avoid mistakes during reassembly. A magnifying glass or flashlight is also useful for inspecting small parts.

Disconnect the refrigerator from the mains|Drain the water from the pan (if any)|Take a photo of the wire connection|Prepare a new thermostat and tools|Free up space for work-->

3. Where is the thermostat located in the Biryusa refrigerator?

In most models Biryusa the thermostat is located inside the refrigerator compartment, behind the control panel. The exact location depends on the year of manufacture and modification:

• 📍 Old models (B-130, B-140) — The thermostat is installed under the temperature control knob, on the right inside the chamber. To get to it, you need to remove the plastic cover.
• 📍 KShD-240, KShD-260 —the thermostat is hidden behind the top panel (above the door) or in a special plastic box on the side.
• 📍 Two-chamber refrigerators (after 2010) —there may be two thermostats: one for the refrigerator compartment, the second for the freezer. The main one is usually located in the upper part of the refrigerator compartment.

To remove the panel:

1. Unplug the refrigerator and wait until it defrosts (if there is ice on the walls).
2. Carefully pry up the plastic cover with a flat screwdriver. In models KShD it is secured with latches. in old B-130 —on screws.
3. Remove the temperature control knob (it is usually simply put on the thermostat axis).
4. Unscrew the screws holding the metal plate or thermostat box.

Under the plastic panel you will see the thermostat itself - a small box with a thin copper tube coming out of it capillary tube (a thin copper tube that goes to the evaporator). Be careful: this tube is very fragile! Do not bend it or allow creases.

What should I do if I can’t find the thermostat?

In some models Biryusa (for example, Biryusa-18S or Biryusa-22K) the thermostat can be hidden behind the back wall of the refrigerator compartment. In this case, you will have to remove the inner lining. For this:

1. Turn off the refrigerator and defrost it.

2. Remove shelves and drawers.

3. Carefully remove the plastic panel on the back wall (it is attached with clips or screws).

4. The thermostat will be located next to the evaporator, attached to it by a capillary tube.

4. Connection diagram for the thermostat in the Biryusa refrigerator

Before disconnecting the wires, carefully consider their location again. Refrigerators Turkish use a standard thermostat connection diagram with 3–4 terminals. Here is a typical pinout (may vary slightly depending on the model):

The thermostat body usually has terminal markings: 3 i 4 (or 6 i 4 in older models). The main rule: The phase wire (orange/red) is always connected to terminal 3 or 6, and the output to the compressor - to terminal 4. If you mix up the wires, the refrigerator will either not turn on, or the compressor will work continuously.

Algorithm for connecting a new thermostat:

1. Disconnect the capillary tube from the evaporator (it is usually attached with a clamp or clip).
2. Remove the old thermostat by unscrewing the fastening screws.
3. Move the wires to the new thermostat in the same sequenceas on the old one.
4. Fix the new thermostat in place, connect the capillary tube to the evaporator.
5. Reinstall the control panel and adjustment knob.

After connecting, check the operation of the refrigerator:

1. Plug it in.
2. Set the thermostat knob to position 1–2 (minimum cooling).
3. Listen: it should start in 5-10 minutes compressor.
4. If the motor starts and turns off periodically, the thermostat is connected correctly.

5. Typical mistakes when connecting a thermostat

Even experienced craftsmen sometimes make mistakes when replacing a thermostat. Here are the most common of them and ways to avoid them:

• ⚡ The phase and zero - if the orange (phase) wire is connected to the compressor terminal, and the brown one to the power supply, the refrigerator will not turn off. Consequence: the compressor will burn out from overheating.
• 🔌 Poor contact on the terminals - if the wires are not tightened enough, the thermostat will heat up and the contacts will oxidize. Solution: use pliers for secure fixation.
• 🧊 The capillary tube is damaged —if it is bent or pinched, the thermostat will not read the temperature correctly. Symptom: the refrigerator freezes too much or too little.
• 🔧 Incorrect installation of the knob - if the adjustment knob is put on the wrong axis, the thermostat will not work. How check: turn the knob - you should hear a relay click.
• 📉 Ignoring multimeter testing —if the new thermostat is also faulty, you will waste time on installation. Tip: always test the part before installation.

One of the most dangerous mistakes is connecting a thermostat without grounding. In refrigerators Biryusa older than 2000, grounding is often ignored, but this can lead to an electric shock if the insulation breaks down. If your model does not have a separate yellow-green wire, ground the refrigerator body through a socket with a grounding contact.

⚠️ Attention: In refrigerators Biryusa KShD-240/260 s system No Frost the thermostat can be connected to a defrost timer. If after replacing the thermostat the fan does not turn on or ice forms on the back wall, check the operation of the timer (it is located next to the compressor).

6. How to check the thermostat with a multimeter?

If you are not sure that the thermostat is faulty, you can check it with a multimeter. To do this:

1. Disconnect the refrigerator from the network and remove the thermostat.
2. Switch the multimeter to resistance testing mode (ohmmeter) or "continuity test".
3. Connect the probes to the terminals 3 i 4 (or 6 and 4 in older models).
4. Turn the temperature adjustment knob:
   • In position 0 (off) there should be resistance infinite (the circuit is open).
   • In position 1–7 the resistance should drop to 0 Ohm (the circuit is closed).

If the resistance does not change when turning the knob, the thermostat is faulty. Also check the capillary tube for damage - if it is broken, the thermostat will not respond to temperature.

For more accurate diagnostics, you can check the thermostat in “cold” conditions:

1. Place the thermostat in a container with cold water (temperature ~0°C).
2. Connect the multimeter to terminals and observe the resistance.
3. If the thermostat is working, after 1-2 minutes the contacts will open (the resistance will become infinite).

If tests show that the thermostat is working, the problem may lie in:

• 🔌 Start relay compressor.
• ⚡ Breakdown of the motor winding.
• 🔋 Malfunctions of the electronic unit (in modern models).

7. Where to buy a thermostat for the Biryusa refrigerator?

A new thermostat can be purchased in several ways:

• 🏬 Stores of spare parts for household appliances —here you will find original parts and analogues. Average price: 500–1500 rubles.
• 🛒 Online platforms (Yandex Market, AliExpress, eBay) - wide selection, but be careful about compatibility.
• 🔧 Service centers —they often sell spare parts with a warranty, but the price may be higher.
• 📦 Used markets —you can find working thermostats from old refrigerators, but the risk of running into a faulty part is high.

When purchasing, pay attention to:

• 🔹 Thermostat model - must match the original one (for example, TAM-133-1M for KShD-260).
• 🔹 Length of the capillary tube —if it is shorter, it will not be enough to reach the evaporator.
• 🔹 Manufacturer —original thermostats last longer than their Chinese counterparts.
• 🔹 Warranty - good stores give a guarantee of 6-12 months.

If you are not sure about the choice, show the seller a photo of the old thermostat or name the refrigerator model. In most cases, universal thermostats are suitable for Biryusa . data-i="293">or Danfoss or RTK-3, but they may require additional adjustment (calibration).

⚠️ Attention: Some online stores indicate that the thermostat is suitable for “all Biryusa refrigerators.” This is not always the case - for example, for models with electronic control (for example, Biryusa-130E) you need a special sensor, not a mechanical thermostat. Check compatibility before purchasing.

8. Alternative ways to solve the problem

If replacing the thermostat did not help or you could not find a suitable part, consider alternative options:

• 🔄 Temporary thermostat bypass - you can short-circuit the wires going to the compressor, bypassing the thermostat. The refrigerator will operate continuously, but this will help preserve food until repair. Danger: risk of compressor overheating!
• ⚙️ Replacement with an electronic thermostat —in some models Biryusa you can install an electronic control unit (for example TR-1). This will require alteration of the circuit, but will provide more precise adjustment.
• 🔧 Repairing an old thermostat —if the problem is in oxidized contacts, they can be cleaned with sandpaper. Sometimes heating with a soldering iron helps (but this is a temporary solution).
• 📞 Call a technician —if you are not confident in your abilities, it is better to entrust the work to a professional. The average cost of replacing a thermostat in the service: 1500–3000 rubles.

If you decide to close the thermostat temporarily, do it correctly:

1. Disconnect the refrigerator from the network.
2. Remove the panel from thermostat.
3. Disconnect the wires from the terminals 3 i 4.
4. Close them together using a terminal block or twist (be sure to insulate!).
5. Turn on the refrigerator - the compressor should start.

In this mode, the refrigerator will work for 1-2 days, but you cannot leave it without a thermostat longer! Also monitor the temperature in the chamber - if it drops below -10°C, defrost the refrigerator to avoid compressor breakdown.

FAQ: Frequently asked questions about connecting a thermostat

❓ Which thermostat is suitable for the Biryusa KShD-260 refrigerator?

For Biryusa KShD-260 Thermostats TAM-133-1M (original) or Danfoss 077B6 (imported analogue) are suitable. You can also use RTK-3, but sensitivity adjustment may be required. The main thing is that the length of the capillary tube matches (usually 1–1.2 m).

❓ Can it be replaced thermostat without defrosting the refrigerator?

Technically yes, but it is unsafe. When working with electricity on an ice-covered refrigerator, there is a risk of a short circuit. In addition, dismantling the control panel in an icy chamber can lead to breakage of plastic parts. We recommend defrosting the refrigerator 6–12 hours before repair.

❓ Why does the refrigerator not turn off after replacing the thermostat?

Probable reasons:

1. Incorrect wire connection (phase and compressor are reversed).
2. The new thermostat is faulty or not calibrated.
3. The capillary tube is damaged or incorrectly installed.
4. The adjustment knob is stuck (check if it rotates freely).

Check the connection according to the diagram and test the thermostat multimeter.

❓ How much does it cost to replace a thermostat in a service?

The cost of work in service centers depends on the region and model of the refrigerator:

• Moscow/St. Petersburg: 1800–3000 rubles (excluding spare parts).
• Regions: 1200–2000 rubles.
• Craftsman visit to home: +500–1000 rubles.

If you buy a thermostat yourself, check with the specialist whether it is suitable for your model.

❓ Can it be used thermostat from another refrigerator?

It is possible, but only if:

• The thermostat model is identical (for example, TAM-133 suitable for most Biryus i Atlantov).
• The length of the capillary tube is the same.
• The rated voltage and current of the thermostat are not lower than the original one.

It is not recommended to install thermostats from electronically controlled refrigerators (for example, Samsung or LG) - they are not compatible with mechanical systems. Biryusy.