Belarusian brand refrigeration equipment Atlant deservedly enjoys the trust of consumers due to its reliability and affordability. However, even the highest quality equipment may eventually require the intervention of a specialist or self-diagnosis. One of the most common reasons why a unit stops freezing or starts working without interruption is failure. Understanding where exactly this unit is located is the first and critical step for successful repair. thermostat. Understanding exactly where this node is located is the first and critical step to a successful repair.
Many owners mistakenly believe that the temperature sensor is always located in the same place, but the design of different series may differ significantly. In some models, access to it is elementary and does not require disassembling the case, in others it is necessary to dismantle the internal panel or even remove the back cover. Localization of the element directly depends on the year of manufacture of your device and its dimensions.
In this article we will analyze in detail all possible options for the location of the thermostat, consider the nuances of access to it in single-chamber and double-chamber models, and also discuss how to correctly diagnose. Knowing the exact installation location will help you save time and avoid unnecessary damage when trying to repair.
The operating principle and meaning of the thermostat
The thermostat, or thermostat, is an electromechanical or electronic device that automatically regulates the operation of the compressor. Its main task is to maintain a given temperature inside the chambers by opening and closing the electrical circuit. When the air in the refrigerator cools to the set value, the contacts openand the engine stops.
When the temperature rises, the contacts close again, starting the cooling cycle. Models Atlant most often use mechanical thermostats with a capillary tube that is sensitive to heat changes. The length of this tube and the location of its installation determine the accuracy of reading readings.
If this unit fails, the refrigerator may either not turn on at all or work non-stop, which leads to freezing of food and excessive energy consumption. Diagnostics it begins with checking the condition of the contacts and the sensitive element.
⚠️ Attention: Before any manipulations with the electrical components of the refrigerator, be sure to unplug it! Failure to comply with safety precautions can lead to electric shock.
Location in single-chamber Atlant models
In classic single-chamber refrigerators Atlant (KSh, KS series) the thermostat is usually located inside the fridge compartment. This is the most accessible option for diagnosis. Most often, the device is hidden under a plastic cover or mounted directly into the housing wall next to the lampshade.
To gain access to the unit, you need to carefully remove the temperature control knob (it is simply pulled together by hand) and unscrew the screws that secure the decorative panel. Underneath it you will see the thermostat itself with a branch extending from it capillary tube. In some older modifications, access can be provided through the upper part of the housing, but this is less common.
It is important not to damage the sensitive tube during dismantling, since its tightness is critical for operation. If the tube is pinched or punctured, the refrigerant inside it will evaporate and the device will stop responding to temperature changes. Mechanical damage capillary is a common mistake of inexperienced craftsmen.
⚠️ Attention: The design of some older models may provide access to thermostat only after partial disassembly of the internal volume. Be careful with plastic latches, which become very fragile in the cold.
Where to look for the sensor in two-chamber refrigerators
In two-chamber models Atlant the situation is somewhat more complicated, since the thermostat is responsible for the temperature in the refrigerator compartment, but can physically be located in different zones. In most modern series (for example MX or XM) it is located inside the refrigerator compartment, often hidden behind a plastic panel on the side or back wall.
However, there are a number of modifications where the thermostat is placed outside, on the back wall of the refrigerator case, in the area compressor. In this case, access will require removing the rear metal cover of the unit. This is less convenient, but protects the mechanism from moisture and condensation inside the chamber.
If you do not find the adjustment knob inside, carefully inspect the top of the refrigerator or the area above the door. Sometimes the thermostat is integrated into the general control unit, especially in models with electronic type control, where the mechanical knob is replaced by a digital display.
Access to the thermostat in models with No Frost
Refrigerators Atlantequipped with the system No Frosthave a fundamentally different sensor arrangement. In such units, a mechanical thermostat is often absent as such in the usual sense; its function is performed by electronic sensors (thermistors). They can be located in the air ducts, on the evaporator or in a special niche.
If your No Frost model does have a mechanical regulator installed (which is typical for transitional or hybrid models), it is usually hidden behind a decorative panel on the ceiling of the refrigerator compartment or behind the back wall that covers the air circulation system. Access often requires removing the shelves and dismantling the plastic box.
It should be taken into account that in systems with automatic defrosting, the sensitive element of the thermostat may come into contact not with the chamber air, but with evaporator. This requires special care when disassembling so as not to break the tightness of the condensate drainage system.
⚠️ Attention: In models with No Frost, the plastic lining of the chambers is very fragile. At low temperatures it can crack due to careless movement. Let the refrigerator warm up a little before disassembling, if possible.
Localization table depending on the series
For ease of searching, we will provide a summary table that will help you navigate depending on the series of your device. Remember that the manufacturer may make changes to the design, so the data is for reference only.
| Refrigerator series | Control type | Thermostat location | Access method |
|---|---|---|---|
| KSh, KS (Single-chamber) | Mechanical | Inside the chamber, near the ceiling | Removing the handle and panel screws |
| MHM 1700-1800 | Mechanical | Inside the refrigerator compartment | Removing the side cover |
| Atlant 40th series | Mechanical/Electronic | Behind the back wall (outside) or inside | Removing the rear cover or panel inside |
| Series 60 (No Frost) | Electronic | Sensors in air ducts | Disassembling the air circulation system |
As you can see from the table, in most cases you will have to work inside the refrigerator compartment. The exception is some older or specific industrial models, where the layout can be changed.
Diagnostics and symptoms of malfunction
Before you start searching and replacing, you need to make sure that the problem lies in the thermostat. There are several obvious signs that indicate its malfunction. The first and most obvious one is the compressor does not turn on. at all, although the light in the chamber is on.
The second sign is that the refrigerator runs nonstop, without turning off, and a “coat” of ice forms in the chamber, and the food freezes. The third option is spontaneous switching on and off at very short intervals, which can be heard by frequent clicks.
For accurate diagnostics, you can use a multimeter. It is necessary to “ring” the thermostat contacts. If, when the temperature changes (for example, by cooling the sensor in the freezer), the resistance does not change or the contact does not close, the device is faulty. It is also worth checking capillary tube for creases.
Is it possible to temporarily bypass the thermostat?
Yes, you can connect the wires directly so that the refrigerator operates in constant cooling mode. However, you cannot leave it in this mode for a long time - this will lead to freezing and breakdown of the compressor. This is a temporary measure to check other components.
Instructions for replacing the thermostat
If diagnostics confirm a breakdown, proceed with replacement. The process requires care and precision. The main rule is that the new thermostat must be completely identical to the old one in terms of characteristics and the length of the capillary tube.
First remove the old regulator by disconnecting the wires and carefully pulling the sensitive tube out of its seat. Then install the new device, securing it in its original location. Pay special attention to fixing the tube - it should fit tightly to the evaporator or wall, as it was in the original.
After assembly, connect the wires according to the diagram and check the operation. Don't forget to adjust the temperature mode.
☑️ Checklist before replacing the thermostat
Frequently asked questions (FAQ)
Is it possible to repair the Atlant thermostat yourself?
At home, repairing a mechanical thermostat is practically impossible and impractical. Violation of the factory calibration or tightness of the capillary system will lead to incorrect operation. It is recommended to completely replace the unit with a new one.
Why does the refrigerator not turn off after replacing the thermostat?
Most likely, a thermostat was installed with inappropriate temperature characteristics or was incorrectly configured. Also, the reason may be a loose fit of the capillary tube to the evaporator, which is why the sensor “does not feel” real cold.
Where to buy an original thermostat for Atlant?
Original spare parts are best purchased from authorized service centers of the brand or from official dealers. There are many analogues on the market that may not be suitable in terms of tube length or temperature range.
How long does it take to replace a thermostat?
For an experienced technician, the replacement takes from 30 to 60 minutes, depending on the model of the refrigerator and the complexity of access to the unit. Self-replacement for a beginner may take longer due to the need for careful disassembly.