Owners of household appliances are often faced with a situation where the refrigerator no longer maintains the temperature correctly. In brand models Atlant, especially in classic two-chamber versions with mechanical control, a thermostat is responsible for this process. Understanding exactly where this element is located is the first step towards self-diagnosis or professional repair.
The thermostat is an electromechanical device that opens and closes an electrical circuit depending on the temperature inside the chamber. If your unit stops turning off or, conversely, stops freezing completely, the problem may lie in this particular unit. Exact location depends on the specific modification of the refrigerator.
In this article we will analyze in detail the design of popular series so that you can navigate where to look for the sensor. You should not ignore the primary signs of failure, since a prolonged violation of the temperature regime can lead to spoilage of food and failure of the compressor. Atlant - reliable equipment, but even it requires periodic checking of components.
The principle of operation of the thermostat in Atlant refrigerators
To effectively search for a part, you need to understand how it functions. The thermostat in refrigerators Atlant is most often mechanical. It consists of a bellows tube filled with gas or liquid and a contact group. When the temperature in the chamber rises, the gas expands, presses on the membrane, and the contacts close, starting the compressor.
The reverse process occurs when the specified cooling threshold is reached. Capillary tube The thermostat is attached to the evaporator or inserted into the chamber to read real indicators. It is this long conductor that often becomes the object of attention during repairs, since its damage leads to complete inoperability of the system.
In two-chamber models, the thermostat usually controls only the refrigeration chamber. The freezer is cooled according to the residual principle or through a separate channel, so a malfunction of the sensor in the upper compartment can lead to defrosting of food below, even if the freezer is working. Operation cycle is broken, and the unit either hums without stopping or is silent.
⚠️ Attention: Before any manipulations with the electrical components of the refrigerator be sure to disconnect it from the network. Working with 220V voltage requires compliance with safety regulations.
Thermostat location in single-chamber models
In single-chamber refrigerators Atlant (MXM-16, MXM-18 and other series) the design is maximum simplified. Here the thermostat is most often located directly in the refrigerator compartment. The temperature regulator, which you turn by hand, is the external part of this mechanism.
The thermostat housing is hidden behind a plastic panel or decorative trim inside the chamber. To get to it, you need to remove the regulator handle and unscrew the fixing screws. Capillary tube in such models it often passes through the chamber wall and is attached to the evaporator, which can be open or hidden behind the back panel.
In some modifications, the thermostat is located in the upper part of the chamber, under lampshade lighting. This requires careful removal of the lamp and protective housing. It is important not to damage the fragile plastic latches during disassembly, as it can be difficult to find them for sale separately.
Where to look for the sensor in two-chamber refrigerators
Two-chamber models, such as the popular series MHM 2808 or 4010have a more complex layout. Here the thermostat is also located in the refrigerator compartment, but access to it may be limited by structural elements. The main temperature control unit is located under the top cover of the chamber or behind the decorative strip.
Often the thermostat is hidden behind the panel on which the lighting lamp is mounted. After removing the lampshade and unscrewing the screws, you will see a plastic box, inside of which is the part you are looking for. From it goes into the wall capillary tube, which is the sensitive element.
In models with the No Frost system (although an air sensor is more often used there, in older versions there was a thermostat) the location may differ. However, classic “drip” two-chamber refrigerators Atlantcomfort the standard design: a regulator in the chamber, a thermostat “body” behind the wall or behind the control panel.
Nuances of the No Frost system
In refrigerators with a full No Frost system, a mechanical thermostat is rarely found. There, an electronic sensor (thermistor), which is located inside the plastic housing of the evaporator or in the air duct, is responsible for the temperature. Replacing it requires deeper disassembly.
Symptoms of a thermostat malfunction
How to understand that the problem is in the thermostat, and not in the compressor or freon? There are a number of characteristic features. If the refrigerator does not turn off works around the clock, forming an ice coat on the back wall, this is a sure sign of sticking contacts or gas leakage from the thermostat bellows.
The opposite situation - the unit does not turn on at all, although the light is on and a hum (or silence) is heard. If you tap on the temperature control and the refrigerator starts, it means the contacts have oxidized or burnt. This is a temporary solution, but it confirms the diagnosis.
It is also worth paying attention to the temperature of the food. If everything in the refrigerator compartment is melting, but in the freezer, on the contrary, everything is frozen, or the products in both compartments are at room temperature while the motor is running, this indicates incorrect operation thermal control system.
Instructions for finding and accessing the thermostat
To carry out diagnostics or replacement, you will need a minimum set of tools: screwdrivers (Phillips and flat-head), a multimeter and, possibly, pliers. The process of searching and dismantling requires care, since the design of refrigerators Atlant implies tight assembly.
Follow the step-by-step algorithm so as not to damage adjacent units. Remember that the capillary tube is very thin and fragile - any bend or puncture will lead to the need to replace the entire thermostat, since it cannot be repaired.
☑️ Checklist before starting work
Actions access:
- 🔌 Remove the temperature control knob by pulling it towards you (sometimes you need to pry it off with a knife).
- 🔩 Unscrew the screws securing the decorative panel or lamp shade inside the refrigerator compartment.
- 🔍 Carefully bend plastic to see the metal housing of the thermostat and the wires suitable for it.
- 🧊 If the thermostat is hidden behind thermal insulation, carefully move it away, being careful not to tear it.
After gaining access, visually inspect the part. There should be no traces of corrosion, burning or melting. Contact must be clean. If the external condition is normal, a continuity test with a multimeter will be required.
Model and location correspondence table
Different series of refrigerators may have design features. Below is a table to help you navigate depending on the model of your device.
| Refrigerator model | Control type | Thermostat location | Access features |
|---|---|---|---|
| Atlant MHM-1700 | Mechanical | Inside the refrigeration chamber | Under the top cover, behind the ceiling |
| Atlant MHM-2808 | Mechanical | Inside the fridge compartment | Behind the decorative strip above the door |
| Atlant MHM-4010 | Mechanical | Inside the fridge compartment | Hidden behind the control panel |
| Atlant KSh-260 | Mechanical | Inside the camera | Immediately behind the regulator knob |
Have keeping in mind that the manufacturer may make changes to the design without notice. Therefore, even if your model matches the table, always focus on the actual design of your unit. Visual inspection is the best way to confirm your guesses.
⚠️ Attention: The design of refrigerators may vary depending on the year of manufacture. If you see that the arrangement of the elements differs from that described, do not use force - study the diagram specifically for your device.
Diagnostics and performance testing
After you get to the thermostat, you need to check it. The easiest way is to test with a multimeter. To do this, remove the wires from the contacts (after photographing the connection diagram) and switch the device to resistance measurement mode.
At room temperature, the contacts should be closed (if it is a normally closed thermostat, which most often happens in refrigerators). The resistance should be close to zero. If the multimeter shows one (break), then the part is faulty.
You can also “freeze” it. Place the thermostat sensing tube in the freezer for 10-15 minutes. After this, ring the contacts again - they should blur (the resistance goes to infinity). If this does not happen, it means the mechanism does not respond. to a change in temperature.
Frequently asked questions (FAQ)
Is it possible to replace the thermostat with an analogue from another brand?
Yes, thermostats from Tam, Danfoss or K-59. The main thing is that the length of the capillary tube, the type of contacts and the temperature range of operation match. Universal models often have an adjustable tube length.
Why does the Atlant refrigerator not turn off after replacing the thermostat?
There may be several reasons: the temperature is incorrectly set, the new thermostat itself is faulty, freon leakage or problems with the compressor. Also check whether the capillary tube fits tightly to the evaporator.
Where to buy an original thermostat for Atlanta?
It is better to look for original spare parts in authorized service centers of the brand Atlant or specialized stores of spare parts for household appliances. There are many analogues on the market, the quality of which may vary.
How much does it cost to replace a thermostat in a service?
The price consists of the cost of the part itself and the work of the technician. On average, this costs less than repairing a compressor, but it is better to check the exact amount in the service centers of your region, since tariffs change.