When the required temperature in your Stinol refrigerator ceases to be maintained, food begins to deteriorate, and ice may form in the chamber or, conversely, the cold may disappear. Most often, the culprit of such malfunctions is the thermostat - the device responsible for turning the compressor on and off. Understanding where exactly this element is located is the first and most important step to successful repair.
In most models Stinol the design provides for hidden installation of the thermostat, which requires partial disassembly of the case or removal of protective panels. Don’t be intimidated by the difficulties, because access to the sensor does not always require specialized tools. The main thing is to know where to look and what precautions need to be taken.
In this article we will analyze in detail the design of various modifications of Stinol refrigerators, consider the typical locations of thermostats and provide a step-by-step algorithm for replacing them. You will learn how to distinguish a mechanical regulator from an electronic one and what to do if the standard sensor fails.
Why do you need a thermostat and how does it work?
A thermostat, or thermostat, is a sensor that controls the temperature inside the refrigerator or freezer. Its main task is to open and close the electrical power supply circuit of the compressor depending on the readings of the sensitive element. Without this device, the refrigerator would operate continuously, which would lead to deep freezing of food and rapid wear of the engine.
The principle of operation is based on the expansion and compression of gas or liquid contained in a bellows (corrugated tube), which is connected to a capillary tube. When the temperature in the chamber rises, the gas expands, presses on the walls of the bellows and closes the contacts, starting the compressor. When a predetermined lower limit is reached, the pressure drops and the circuit opens.
Modern models Stinol often use electronic thermostats, where a thermistor plays the role of a sensitive element. Such devices are more accurate, but require a different approach to diagnosis and replacement. Mechanical models, such as TAM-133 or K-59are still widespread and can be easily repaired at home.
What is the difference between mechanical and electronic thermostats?
A mechanical thermostat is controlled by a rotary knob and makes a characteristic click when switching The electronic sensor has no moving parts, is controlled through a panel on the refrigerator body and requires a multimeter to accurately diagnose resistance.
Typical locations in different Stinol models
Searching for a thermostat in refrigerators Stinol depends on the specific series and year of manufacture of the device. The brand's designers used several sensor placement schemes, each of which has its own access features. Knowing these nuances will save you time and protect you from damage to plastic elements.
In classic two-chamber models with an upper freezer, the thermostat is most often hidden under the top cover of the refrigerator compartment. To access it, you need to remove the decorative strip, which can be secured with latches or screws. In some cases, the sensor is integrated into the lighting control unit.
If we are talking about models with the system No Frost, the thermostat may be located in a niche behind the lampshade or in a special compartment on the side wall. In the freezer, sensors are often located on the back wall behind the evaporator protective panel.
Preparation for diagnostics and replacement of the unit
Before proceeding with disassembly and search thermostat, it is necessary to perform a number of preparatory actions. This will ensure your safety and the integrity of the refrigerator components. Ignoring these steps may result in electric shock or damage to the wiring.
First of all, the refrigerator must be completely disconnected from the electrical outlet. Unplug the power socket and make sure the rear of the device is accessible. It is also recommended to empty the refrigerator compartment of food so that it does not interfere with work and does not spoil during the absence of cold.
To carry out the work you will need a minimum set of tools:
- 🔧 Screwdrivers (Phillips and flat) for removing panels and fastening screws.
- 🔦 Flashlight for illuminating hard-to-reach places inside cameras.
- 🧤 Gloves to protect your hands from sharp edges and possible refrigerant.
- 📏 Multimeter to check the integrity of the thermostat contacts.
Step-by-step instructions for accessing the thermostat
The process of removing the thermostat in refrigerators Stinol requires care and accuracy. Below is a universal sequence of actions that is suitable for most models with mechanical control.
Start by removing the top decorative panel of the refrigerator compartment. It is usually secured with two screws at the front or held in place by plastic clips. Carefully pry off the panel with a flathead screwdriver, being careful not to damage the plastic. After removing the cover, you will see the thermostat housing.
Next follow the algorithm:
☑️ Algorithm for replacing the thermostat
After the mounting screw is unscrewed, carefully pull the regulator towards you. Be careful with the capillary tube - it is very thin and easily pinched. If the tube is long, it must be carefully removed from the process channel in the wall of the refrigerator.
⚠️ Attention: The capillary tube is filled with freon. If it is damaged, the refrigerant will instantly evaporate, and moisture and air will enter the system. Repair in this case will require calling a technician with equipment for vacuuming and refilling.
The new thermostat is installed in the reverse order. Make sure that the sensitive part of the tube fits tightly to the wall of the evaporator or is fixed in its normal place, otherwise the temperature regime will be disrupted.
Compatibility table of thermostats for Stinol
When replacing, it is important to choose the correct analogue, since different models of thermostats have different lengths of the capillary tube and temperature range of operation. Using an unsuitable sensor will lead to incorrect operation of the compressor.
Below is a table of correspondence between original numbers and popular analogues, which are often used when repairing equipment Stinol:
| Original Stinol | Analogue | Tube length | Application |
|---|---|---|---|
| TAM-133 | K-59 L1948 | 0.75 m | Refrigerator compartment |
| TAM-145 | K-59 L1950 | 1.3 m | Freezer compartment |
| TAM-125 | K-57 L1670 | 0.75 m | Single-chamber models |
| TH-133 | K-59 L1948 | 0.75 m | Universal |
Pay attention to the markings on the device body. The numbers at the end of the code often indicate the length of the capillary tube and the temperature range. If you are not sure about the choice, it is better to consult with a specialist or use original spare parts.
Fault diagnosis and common errors
How to understand that it is thermostatthat has failed, and not the compressor or starting relay? There are several signs that indicate a problem with the temperature controller. One of the main symptoms is the absence of a click when turning the knob.
If the refrigerator does not turn on at all, try shorting the wires going to the thermostat (after disconnecting them from the sensor). If the compressor starts working when it closes, then the problem is definitely in the regulator. Also, a malfunction is indicated by continuous operation of the compressor without shutdowns, which leads to the formation of a “fur coat” on the rear wall.
Frequent errors during replacement:
- ❌ Incorrect installation of the capillary tube (insufficient contact with the wall).
- ❌ Clamping of the tube when installation, which leads to depressurization.
- ❌ Using a thermostat with a different temperature range.
⚠️ Attention: Technical characteristics of refrigerators may vary depending on the year of manufacture and the specific modification. Before ordering spare parts, check the markings on the nameplate of your device with the data in the manufacturer's catalogs.
Frequently asked questions (FAQ)
Can an old thermostat be repaired or is it only necessary to replace it?
In most cases, repairing a thermostat is not practical. The device is a sealed unit, and a violation of its integrity leads to the loss of the sensitive element. It is easier and more reliable to replace it with a new analogue.
Why does the Stinol refrigerator turn on and then immediately turn off?
This may indicate a malfunction of the start relay or the compressor itself, but sometimes the cause is “sticking” of the contacts inside the thermostat. A complete diagnosis of the electrical circuit is required.
Where to buy an original thermostat for Stinol?
Original spare parts can be found in specialized refrigeration equipment stores or ordered through service centers. However, high-quality analogues (Italy, Turkey) work no worse and are cheaper.
Is it dangerous to change the thermostat yourself?
If you follow safety precautions and disconnect the device from the network, the replacement process is safe. The main danger is damaging the capillary tube or connecting the wires incorrectly, so act carefully.