Searching for the location of the main control elements in refrigeration equipment becomes relevant when the equipment ceases to correctly maintain the temperature regime. Owners of the model Stinol 107 often face the need to get to the thermostat to replace it or check the serviceability of the contacts. This classic two-chamber model, produced since the late 90s, is equipped with a mechanical control system, which makes it reliable, but requires periodic maintenance.
Understanding the internal architecture of the unit is the first step to successful repair. Thermostat in this modification it is not hidden behind complex electronic panels, as in modern NoFrost systems, but is accessible for inspection when minimal disassembly. However, in order not to damage the plastic case or insulating materials, you need to clearly understand where exactly you will point the screwdriver.
In this article we will analyze in detail the geometry of the refrigeration chamber, indicate the exact coordinates of the sensor and talk about the nuances of dismantling. You will learn how to distinguish a normal installation location from areas where you should not go, and what tools you will need for the job. A competent approach will allow you to save time and avoid common diagnostic mistakes.
⚠️ Attention: Before starting any work on disassembling the refrigerator, be sure to disconnect the device from the electrical network. Working with live electrical wiring is strictly prohibited and can lead to injury.
Design features of the Stinol 107 refrigeration chamber
The refrigerator Stinol-107 is a classic two-chamber unit with a bottom arrangement freezer compartment. In the upper chamber, designed for storing food, air circulation and temperature control are carried out using an evaporator hidden behind the rear wall. It is here that the main control element of the entire system is located - thermostat (thermostat).
A design feature is the use of a capillary tube that surrounds the evaporator. This tube transmits temperature information to the thermostat bellows. Unlike more modern models, where sensors can be built into a plastic case or displayed on the front panel, in the 107 series all controls are located inside the working area.
Difference between Stinol 107 and newer models
In newer models of Stinol and other brands, thermostats are often replaced with electronic control modules, where the temperature sensor is a small resistor Model 107 uses a classic mechanical thermostat with a bellows, which makes it repairable and does not require complex electronics for replacement.
The plastic box covering the top of the chamber serves not only a decorative function. It serves as an insulator and protection for electrical components. Removing this part opens access to the adjustment mechanismwhich is hidden from the user's eyes in normal operation.
The exact location of the thermostat and sensor
Many users mistakenly believe that the temperature regulator is located outside, on the front panel. In the model Stinol 107 the mode switching knob (numbers from 1 to 5 or Min/Max) is located on the inner top panel of the refrigerator compartment. However, thermostatitself, which is an electrical switch, is hidden deeper.
If you remove the plastic cover with the logo and handle, access to the thermostat housing will open under it. It is attached directly to the ceiling of the refrigerator or to the metal frame of the evaporator. A long corrugated one extends from it capillary tube, which goes deep into the heat exchanger.
- 📍 The thermostat is located in the upper left or right corner (depending on the year of manufacture and modification) under a plastic cover with an adjustment knob.
- 📍 The capillary tube is inserted into a special groove on the evaporator and fixed with metal brackets.
- 📍 The electrical contacts are hidden under a plastic cap, which must be carefully removed to access the terminals.
It is important to note that in some modifications there may be a defrost sensor or emergency thermostat, but they have a different design and location. When searching for “where it is”, the main attention should be paid to the element with the control knob.
Instructions for dismantling the plastic access panel
To get to the element you are looking for, it is not necessary to disassemble the entire refrigerator. It is enough to dismantle the upper decorative and protective box. This process requires care, since plastic aged 20-25 years can become brittle.
First of all, you need to empty the top shelf of the refrigerator compartment. Then you should carefully inspect the perimeter of the plastic panel. It can be held on by latches or screws hidden under decorative plugs. The model Stinol 107 most often uses a latch system.
☑️ Procedure for removing the panel
Movements should be smooth. If the panel does not come off, do not use excessive force; you may have missed a fastener. After removing the panel, you will have a view of thermostat and the wires suitable for it.
⚠️ Attention: The plastic of old refrigerators becomes very brittle. Before releasing the latches, it is recommended to warm them up a little with a hairdryer (not with hot air, but with warm air) or treat them with a penetrating lubricant to avoid cracks.
Connection diagram and electrical contacts
After gaining access to the insides, the repairman is faced with the question of identifying the wires. Three wires are usually suitable for the thermostat (depending on the modification and the presence of an indicator lamp). Understanding the wiring diagram is critical for correct diagnosis. Stinol 107 Usually three wires are suitable (depending on the modification and the presence of an indicator lamp). Understanding the wiring diagram is critical for correct diagnosis.
The main contacts you will see are responsible for switching the compressor. When the temperature drops, the contacts open and the motor turns off. If the contacts are burnt or oxidized, the refrigerator may stop turning on or, conversely, work without stopping.
| Wire color (conditionally) | Function | Where it goes |
|---|---|---|
| Red / Brown | Phase (Input) | From power cord / Start relay |
| Orange / Yellow | Output to compressor | To engine start relay |
| Green / White | Indicator lamp | To the camera lighting lamp |
To check the contacts, you can use a multimeter in dial mode. In a cold state (if the thermostat is working and set to minimum), the contacts should be closed. If you took the thermostat out of the refrigerator and it warmed up to room temperature, the contacts should also be closed.
Diagnostics of thermostat malfunctions
Understanding where the thermostat is located allows for initial diagnosis. The most common problem is that the refrigerator does not turn off or does not start at all. In the first case, bellows it could lose its seal, and the gas evaporates, which is why the contacts remain closed constantly.
In the second case, when the compressor is silent, the problem may be an open circuit inside the thermostat or oxidation of the contacts. It is also worth checking the condition of the capillary tube: if it is pinched or deformed, the sensor will not read the temperature correctly.
Symptoms of a malfunction may not be obvious. For example, food in the refrigerator may freeze or, conversely, quickly deteriorate. This indicates that thermostat works, but with a large error or is “stuck” in one position.
- ❄️ The refrigerator is not turns off: Probably a freon leak from the thermostat bellows or stuck contacts.
- ❄️ The refrigerator does not turn on: Open circuit inside the thermostat or lack of contact at the terminals.
- ❄️ Unstable temperature: Displacement of the capillary tube or loosening of the sensor.
For accurate diagnostics, the exclusion method is often used: the wires going to the thermostat are temporarily short-circuited (bypassing it). If after this the compressor starts, it means that the problem is in the thermostat.
⚠️ Attention: The method of directly shorting the wires to test the compressor can only be used for a short time (no more than 10-15 minutes) and under constant monitoring. Leaving the refrigerator in this mode is dangerous due to overheating and spoilage of food.
Replacing the thermostat: step-by-step algorithm
If diagnostics confirmed a malfunction, thermostat it is necessary to replace it. It is important to choose an analogue that is suitable for the length of the capillary tube and the type of fastening. For Stinol 107 thermostats of the TAM or K-59 series are often suitable, but it is better to focus on the markings of the old device.
The replacement process begins with disconnecting the wires. It is recommended to take a photo of the wiring diagram before removing the terminals. Then the old capillary tube is carefully removed from the evaporator groove.
The new tube is laid exactly along the same path as the old one. The capillary should not be kinked or kinked, as this will lead to its depressurization and failure of the new thermostat. The attachment of the tube to the evaporator must be tight; special clamping strips are often used.
After installing all the elements, reassemble in the reverse order. The plastic panel is returned to its place, the shelves are installed in the chamber. Only after complete assembly, the refrigerator is connected to the network for testing.
Frequently asked questions (FAQ)
Is it possible to operate the Stinol 107 refrigerator without a thermostat?
Theoretically, it is possible if you directly close the contacts going to the compressor. However, in this case, the refrigerator will run continuously until you turn it off manually. This will lead to freezing of the evaporator, food spoilage and rapid wear of the compressor. This mode is only acceptable for short-term diagnostics.
Which thermostat is better to buy as a replacement: TAM or K-59?
Both types of thermostats (TAM-133, K-59) are often used as analogues. The main difference may be the length of the capillary tube and the order of the contacts. It is recommended to buy a model with markings as close as possible to the original, or a universal analogue with an adjustable tube length.
Why did the refrigerator start working longer after replacing the thermostat?
This may be due to improper placement of the capillary tube. If it does not fit tightly to the evaporator, the temperature sensor reads the information with a delay. Also, the reason may be a poor-quality new thermostat or a freon leak in the cooling system.
Where is the emergency thermostat located in this model?
In some modifications Stinol 107 there may be an additional defrost sensor, which is located on the evaporator, often closer to the outlet of the tubes. It serves to protect the system from overheating in defrost mode, but the main temperature regulator in the chamber is a mechanical thermostat with a knob.
What to do if the new thermostat clicks, but does not turn on the compressor?
If you hear a click, but the compressor is silent, the problem may not be in the thermostat, but in the compressor start relay or in the engine itself. Check the voltage at the output of the thermostat: if it is there, but the compressor does not start, look for a fault further along the circuit.