Visual identification thermostat in brand refrigeration equipment Atlant is the first and critical step in diagnosing cooling system faults. When the refrigerator stops freezing or, conversely, begins to freeze food to the point of stone, an experienced technician will first check this particular unit. Understanding how it looks, where it is located and what markings it bears, you can avoid purchasing the wrong spare part and save time on finding a solution to the problem.
The appearance of this component may vary depending on the year of manufacture of the equipment and the specific series of the refrigerator. In older models you will find massive devices with long capillary tubes, while more modern units use compact electronic analogues or improved mechanical versions. The main visual difference of a mechanical thermostat is the presence of a long copper or aluminum tube (capillary), which goes deep into the evaporator.
For the owner of household appliances, it is not just important know what a part looks like, but also be able to distinguish original components from cheap analogues. There are many modifications on the spare parts market that may be similar in appearance, but have different temperature response thresholds. Incorrect selection will lead to the fact that the refrigerator will not work correctly even with a new spare part.
Appearance of a classic mechanical thermostat
Classic mechanical thermostatwhich is most often found in refrigerators Atlant of old and medium series, is a compact metal or plastic body It is usually shaped like a cylinder or rectangular box, about the size of a small cream jar or matchbox, but slightly larger. The body is often made of copper, brass or durable heat-resistant plastic in black, silver or white.
One of the most noticeable parts of the device is capillary tube. This is a thin, flexible tube coming out of one of the ends of the housing. Its length can vary from 0.5 to 2.5 meters, depending on the model of the refrigerator. The tube may be bare (copper-colored) or enclosed in a protective aluminum or plastic braid. It is this tube that is inserted into the evaporator and responds to temperature changes, transmitting a signal to close or open contacts inside the housing.
Located control rodat the end or side of the housing opposite the tube. This is a plastic or metal rod onto which a temperature control knob (knob) is placed, visible to the user inside the refrigerator compartment. The stem can be of different lengths and shapes, sometimes it has a slot for a screwdriver if the handle is removed. Also on the body you can see holes for fastening with screws to the wall of the refrigerator or special plastic “ears” for installation.
⚠️ Attention: When visually inspecting the old thermostat, pay attention to the condition of the capillary tube. If there are creases, cracks or traces of copper oxidation (green coating), the tightness of the system is broken, and the part must be unconditionally replaced, even if the contacts are called by the tester.
Contacts for connecting wires are usually hidden inside the case, but insulated wires exiting through a special hole lead to them. In some models, the wires may be enclosed in a common braid.
Markings and designations on the body
To accurately identify a part, it is not enough just to know what it looks like. Each body thermostat has a special marking that contains key information about its characteristics. Usually this data is embossed on a metal plate or printed with indelible ink directly on the case. Ignoring these symbols when purchasing a replacement is the most common mistake when doing thermostat repairs yourself DIY repairs.
First of all, pay attention to the alphanumeric model code. For refrigerators Atlant the most typical series are those starting with letters TAM, TAM 133, K-50, K-59 or L-12. The numbers following the letters indicate the temperature response range and the length of the capillary tube. For example, the marking may contain information about the temperature at which the compressor is turned on and off.
Also, you can often find a color mark or dot on the case. This is not a decorative element, but a technical indicator of the temperature range. Different manufacturers use different colors to indicate the same parameters, so color is an auxiliary, but not the main feature. More important is the number of contacts: there can be two, three or four, and they must match your original part.
- 🔍 TAM-133 - one of the most common models for single-chamber and double-chamber refrigerators, often has a black or white plastic head.
- ❄️ K-50 - a classic thermostat with a long tube, often used in medium-sized models, the body can be metal.
- ⚙️ L-12 —a compact version, often found in newer series, characterized by a shortened control rod.
- 🔌 Contact —pay attention to whether they are numbered (3, 4, 6) or lettered, this will help when resoldering the wires.
If the markings on your old thermostat have worn off or are not readable due to corrosion, don't despair. In this case, it is necessary to measure the length of the capillary tube with a ruler and count the number of contacts. These two parameters, together with the dimensions of the case, will allow you to select a functional analogue that will work correctly in your system.
Thermostat location in different Atlant models
Understanding where the thermostat is physically located is necessary for its visual inspection. In refrigerators Atlant the location of this element depends on the type of defrosting system and the year of manufacture of the model. In most classic two-chamber models, the thermostat is hidden inside the refrigerator compartment, but access to it can be organized in different ways.
In the standard version, the thermostat housing is mounted on the back wall of the refrigerator compartment, often in the upper right or left corner. To get to it, you will most likely need to remove the plastic cover covering the lamp shade or just a decorative trim. In some models, the thermostat is hidden behind the temperature control panel, which is dismantled after removing the regulator handle.
There is also a location option when the thermostat is located outside the refrigeration chamber, in the technical compartment, but this is more typical for built-in models or specific industrial series. In household two-chamber units, the capillary tube always goes into the evaporator, which can be located behind the back wall of the chamber or be open (in models with a “crying” wall).
⚠️ Attention: The design of refrigerators may vary depending on the year of manufacture. If the described search option does not fit your unit, check the official technical documentation or the diagram of your specific device, as engineers may have changed the layout of the components.
To remove the part, in most cases it is not necessary to completely disassemble the refrigerator. It is enough to disconnect the device from the network, empty the chamber of food and dismantle the protective plastic elements. Be careful when working with plastic in the cold - it becomes brittle and can crack from careless movement.
Hidden mounting points
In some Atlant models, the thermostat can be additionally secured with a metal bracket or clip, which is not visible at first glance. Inspect the area around the cabinet from all sides before pulling on the wires.
Differences between thermostats for single-chamber and dual-chamber models
Visual differences between thermostats for different types of refrigerators Atlant may not be obvious to the untrained eye, but they are critical to functionality. The main difference lies in the length of the capillary tube and the temperature range of operation, which is visually reflected in the markings and dimensions.
V single-chamber refrigerators The thermostat is responsible for maintaining the temperature throughout the entire volume. Such models often have a shorter capillary tube, since the evaporator is located closer to the control unit. The housings of such thermostats can be more compact. The temperature range here is wider, since it is necessary to cover both the cooling mode and the light freezing mode.
In double-chamber models the thermostat controls the temperature only in the refrigerator compartment. The capillary tube here is often longer to reach the evaporator, which may be hidden behind a panel. In addition, in two-chamber units, thermostats with an additional contact for controlling a light bulb or fan (if provided for in the design) are more often found.
| Characteristics | Single-chamber models | Double-chamber models models |
|---|---|---|
| Capillary length | Usually 0.5 - 0.9 meters | Often 1.3 - 2.5 meters |
| Number of contacts | More often 2 or 3 | Mainly 3 or 4 |
| Temperature range | Wider range | Specific for the refrigeration chamber (+2..+8°C) |
| Case size | Often compact | Standard or extended |
Using a thermostat from a single-chamber refrigerator in a two-chamber one (and vice versa) will lead to a violation of the temperature regime. Food may spoil or freeze. Therefore, when replacing, always check not only the appearance, but also the purpose of the part.
Instructions for safe dismantling and inspection
Before you finally decide that the thermostat is faulty and requires replacement, it must be removed and checked. This process requires care, since the capillary tube is very thin and easily damaged. Any deformation of the tube leads to freon leakage from the internal sensor system, which makes the thermostat inoperative.
First, completely disconnect the refrigerator Atlantby unplugging the plug from the socket. This is a mandatory safety requirement. Then gain access to the thermostat by removing the necessary plastic panels. Disconnect the wires from the contacts, having previously memorized or photographed the connection diagram. Do not pull the wires sharply - they may be soldered or tightly clamped in the terminals.
The most delicate part is removing the capillary tube from the evaporator. It is inserted into a special socket and can be held quite tightly. You cannot pull on the tube itself! It is necessary to carefully loosen the thermostat housing, helping yourself with pliers (through the fabric so as not to damage it), and gradually pull out the assembly. If the tube is wrapped around the evaporator, it must be carefully unwound.
☑️ Checklist before dismantling
After removal, carry out a visual inspection. If traces of oil are visible on the tube, this may indicate depressurization. Check the integrity of the wire insulation. For electrical testing, use a multimeter in continuity mode. At room temperature, the contacts should ring (or not ring, depending on the type), and when cooled (for example, if you put the sensor in the freezer for 10 minutes), the state of the contacts should change.
Frequently asked questions and nuances of selecting analogues
When looking for a replacement for the thermostat in the refrigerator Atlant users are often faced with the lack of original spare parts in stores. This is a normal situation, since manufacturers of household appliances often use universal components from third-party brands, such as Danfoss, Orbital or Ranco. The main thing is to choose the right analogue.
If you have not found the exact model by marking, look for an analogue based on three parameters: the length of the capillary tube, the number of contacts and the temperature range. It is possible to install a thermostat with a longer tube - the excess is neatly rolled up and hidden in the technical compartment. However, installing a shorter tube is unacceptable.
It is also worth considering the diameter of the control rod. If the new thermostat has a rod of a different diameter, the old control knob may not fit or, conversely, may dangle. In such cases, you can use adapters or carefully sharpen the plastic, but it is better to look for a model with the closest geometric parameters.
⚠️ Attention: Never try to repair the thermostat itself by opening its housing. This is a sealed system filled with freon gas (Freon-12 or equivalent). Opening will result in immediate loss of performance. Only complete replacement of the unit.
A correctly selected and installed thermostat will return your refrigerator to Atlant factory operating characteristics. Do not neglect consultation with the spare parts seller, showing him a photo of the old part and telling him the model of the refrigerator - this will significantly reduce the risk of error.
Is it possible to use a thermostat from another brand?
Yes, you can. Atlant refrigerators are often equipped with thermostats from Danfoss or the Oryol plant. The main thing is the coincidence of technical characteristics, and not the logo on the case.
Is it possible to replace a mechanical thermostat with an electronic one?
Theoretically, this is possible, but it requires a deep rework of the refrigerator control system. Electronic thermostats operate on a different principle and require connection to a controller, which is not present in older models Atlant. A simple one-to-one replacement will not work - you will have to change the entire control circuit, which is not economically feasible.
Why does the new thermostat click, but the refrigerator does not turn on?
The click means that the thermostat is properly closing the circuit. If the compressor does not start, the problem is not with the thermostat. Possible causes: a faulty compressor start relay, burnt-out motor windings, or a wiring problem. The thermostat has nothing to do with it.
How do you understand that the thermostat is “lying” and requires adjustment?
If the refrigerator turns off when it’s still warm inside, or freezes to the point of ice at the minimum settings, the calibration may have gone wrong. Some thermostats have an adjusting screw under a seal, but turning it without special equipment and knowledge risks completely messing up the settings. It’s easier to replace the unit.
Does the length of the capillary tube affect the accuracy of the work?
Yes, it does critically. If the tube is too short, the sensing element will not be in the active heat exchange zone, and the thermostat will respond to the air temperature in the chamber, and not to the actual state of the evaporator. This will lead to frequent switching on and off (clocking) of the compressor.
Where to find the marking if it is erased?
If the marking is not readable, focus on the refrigerator model Atlant. Using the serial number and model of the unit, you can find a technical data sheet in service centers or on specialized forums, which indicates the type of thermostat installed. Measuring the length of the tube and comparing it with spare parts catalogs also helps.