Refrigerators brands Stinol are deservedly considered one of the most reliable units in the post-Soviet space, but even time-tested equipment experiences malfunctions in the cooling system. When you notice that the chamber has stopped freezing or, conversely, the food has begun to freeze, the first thought is often that the thermostat is faulty. Understanding where exactly this important unit is located is a key first step towards self-diagnosis and possible repair.
Location thermostat in Stinol models is not always obvious to the untrained user, since manufacturers often hide it behind decorative panels or inside body elements. Knowing exactly the layout of your specific refrigerator will save time and avoid damage to plastic parts during disassembly. In this article, we will analyze in detail where to look for a temperature sensor in various modifications and how to distinguish it from other controls.
⚠️ Attention: Before starting any work to find or replace the thermostat, be sure to disconnect the refrigerator from the electrical network. Working with electrical appliances under voltage is dangerous to life and can lead to a short circuit.
Design features of Stinol thermostats
Most models of refrigerators Stinol, especially the popular series 101, 102, 103 and 104, use a classic control circuit compressor. Thermostat here acts as the main command center, which opens and closes the electrical circuit depending on the temperature inside the refrigeration chamber. Structurally, it is a sealed capsule, sensitive to changes in refrigerant pressure inside a bellows connected to a long capillary tube.
The capillary tube, often simply called a “capillary,” is discharged directly into the cooled volume. It is she who reads the real air temperature. Depending on the specific modification, the length of this tube may vary, but the principle of operation remains the same for all mechanical regulators. When heated, the gas in the bellows expands and closes the contacts, starting the engine, and when cooled, it contracts, opening the circuit.
What is the difference between a thermostat and an electronic sensor?
In classic Stinol models, a mechanical thermostat with a rotary handle is used. In more modern or modified versions, electronic sensors (thermistors) may be found, which are a small resistor that changes the resistance. Mechanical models are more repairable and cheaper, while electronics require precise calibration and often replacement of the entire control unit.
Searching for a thermostat in the refrigerator compartment
The most common place where it is located thermostat in Stinol refrigerators is the interior space of the refrigerator compartment. Traditionally, manufacturers place the control unit in the upper left or right corner, hiding it under a plastic cover or directly integrating it into the lighting control panel. In older models, the regulator handle can protrude directly into the chamber, which simplifies access to the mechanism itself, but requires careful removal.
To get to the insides, it is often necessary to dismantle the lampshade or remove the top decorative panel. Under it you will see yourself thermostat with connected wires and that same capillary tube that goes deep into the body. It is important not to confuse the thermostat with a defrost sensor, which can also be located in the upper part of the chamber, but has a different design and purpose.
In some modifications, such as Stinol-104, the thermostat can be hidden behind the back wall of the chamber or built into the control unit located above the door. If you do not see a clear adjustment knob inside, carefully inspect the ceiling of the refrigerator. Capillary tube in such cases, it is often secured with special clamps on the evaporator, and its beginning leads to the thermostat housing.
Location in the freezer compartment and two-compressor units models
The situation changes dramatically when we are talking about two-chamber models with the No Frost system or separate freezers. In such units, the thermostat of the fridge compartment is often located outside of it. In Stinol models with a “crying” evaporator, the sensor can be located in a special technological compartment, which can be accessed after removing the top cover of the entire refrigerator or the back panel.
For a freezer, if it has a separate regulator, the location is usually standard - inside, on the wall or in the corner. However, in systems with electronic control, the physical thermostat may be absent as such, giving way to electronic sensors, the signals from which are processed by the main controller. In classic “Stinols”, mechanics prevail, and you need to look for a housing with a bellows.
⚠️ Attention: In two-compressor models, each cooling circuit has its own independent thermostat. Do not confuse the wires going to the freezer motor with the wires of the refrigerator compartment. The markings on the terminals will help you figure it out, but it’s better to take a photo before turning it off.
If your refrigerator is equipped with a system No Frostthen the thermostat (or defrost sensor) is often hidden behind the back panel of the freezer, directly on the evaporator. Getting there is more difficult: you will need to completely defrost the unit within 24 hours and remove many fasteners. This is necessary so that the ice does not damage the fragile plastic latches itself capillary during dismantling.
Dismantling and access to the device
The process of gaining access to thermostat requires consistency and accuracy. First of all, you need to clear the top of the refrigerator from food and, if necessary, remove the shelves that interfere with your view. Next, unscrew or gently press out the latches of the lamp shade. It is under it that the thermostat head is most often hidden.
After removing the decorative elements, the mechanism itself will appear to your attention. It is usually secured with two screws or plastic clips to the camera body. The wires should be disconnected after first remembering or photographing their location. Terminals they may oxidize, so act carefully so as not to break the conductors.
☑️ Checklist before dismantling
The most delicate part of the operation is extraction capillary tube. It is tucked into a channel inside the refrigerator wall or attached to the evaporator. You need to pull it out slowly, without jerking, slightly swaying from side to side. Excessive force can lead to rupture of a thin tube, which will turn a simple repair into a complex procedure for charging refrigerant.
Diagnostics and signs of malfunction
Before changing the part, you should make sure that this is the problem. The main sign of failure thermostat is incorrect operation of the compressor. If the motor does not turn on at all, even when turning the control knob to the maximum cold position, or, conversely, it works non-stop, freezing the entire contents, this is a direct signal of a malfunction of the sensor.
It is also worth paying attention to the nature of the click. A working thermostat makes a clear, loud click when switching modes. If the click is dull or absent at all, the mechanism could be “stuck.” In some cases, they oxidize contacts inside the housing, which leads to a lack of power to the compressor, although the bellows itself is working.
| Symptom | Probable cause | Action |
|---|---|---|
| The refrigerator does not turn on | Open circuit in the thermostat | Ring with a tester, replace |
| Continuous operation of the motor | Sticking contacts or freon leak in the bellow | Replacing the thermostat |
| Short operating cycles | Incorrect calibration or displacement of the capillary | Check the fit of the tube |
| No click | Mechanical destruction of the mechanism | Urgent replacement |
⚠️ Attention: If after replacing the thermostat the refrigerator started working, but after a while it stopped turning off again, the problem may not be with the sensor, but with a freon leak. The thermostat simply cannot fix the desired temperature, since the evaporator does not reach it.
Selecting an analogue and installing a new regulator
When looking for a replacement for Stinol most often, thermostats of the brand Tam or K-59. For example, the model Tam-133 is a direct analogue for many versions of Stinol 101 and 102. It is important to pay attention to the length of the capillary tube: it should be equal to or slightly longer than the original one. The excess length can be carefully rolled into a ring behind the back wall, but it is strictly forbidden to shorten the tube.
Installation is carried out in the reverse order. First, carefully, without tension, it is tucked capillary into the channel or fixed on the evaporator. Then the thermostat housing is fixed, the wires are connected according to the diagram made earlier. Pay special attention to insulating the twist points if you do not use the original terminals.
After assembling all the panels and returning the refrigerator to its working position, you need to let it work for several hours without loading food. This will allow the system to enter the mode and check the correct operation of the new thermostat. If the on and off cycles correspond to the norm (approximately 10-15 minutes of operation and 20-30 minutes of rest), the repair can be considered successful.
Is it possible to replace the Stinol thermostat with a universal one?
Yes, you can, if you choose an analogue with a suitable temperature range. However, universal models may require additional adjustment with a screw on the body, which is difficult to do without special equipment. It is better to look for original articles or complete analogues.
What to do if the capillary tube is shorter than the original?
You cannot use a shorter tube - the sensor will not sense the real temperature in the depths of the chamber. It is necessary to purchase a model with a longer length or carefully extend the tube, which requires special equipment. It’s easier to buy the right size.
Why does the refrigerator freeze less quickly after replacing the thermostat?
Perhaps the new thermostat has a different response range. Try turning the adjustment knob to the maximum value. If this does not help, check whether the capillary is filled correctly and whether you damaged it during installation.
Where to buy a thermostat for the old Stinol?
Original spare parts are rare, but complete analogues (Tam, K-59, Ranco) are widely represented in spare parts stores for household appliances and in specialized markets. When ordering online, check the length of the capillary and the type of terminals.