Brand refrigerators Stinol are deservedly considered one of the most repairable units in the post-Soviet space. However, when the equipment stops turning off or, conversely, stops freezing, owners are often faced with the need to diagnose the thermostat. Understanding exactly where it is Thermostat of the Stinol refrigeratoris the first and most important step to successfully restoring the device's functionality.
In most models from this manufacturer, the temperature sensor is hidden inside the refrigerator compartment, but access to it can vary significantly depending on the series and year of manufacture. A careless attempt to get to the unit without first studying the circuit can lead to damage to the plastic elements or a violation of the tightness of the system.
In this article we will analyze in detail the search algorithm, types of sensor locations in different modifications and methods for checking them. Precise localization element will allow you to save time on disassembly and avoid unnecessary manipulations with the body of the equipment.
Types of thermostats and their influence on location
Before you start disassembling, you need to understand what type of temperature control you are dealing with. In refrigerators Stinol most often there are mechanical thermostats, the operating principle of which is based on the expansion and compression of gas or liquid inside a bellows tube. The design of this unit directly determines where to look for the regulator itself.
There are two main types of fastening: mounted and built-in. Wall-mounted models are usually located outside the top of the refrigerator compartment or built into the ceiling light. Built-in options can be hidden behind decorative panels. Mechanical thermostat always has a capillary tube that goes into the evaporator, and this is a key mark when searching.
⚠️ Attention: The thermostat capillary tube is made of thin copper and (easily) damaged when bent. Any violation of its integrity will lead to freon leakage from the control circuit, which will require replacement of the entire assembly.
Electronic control systems, which can be found in more modern or combined models, do not have a classic thermostat in the form of a rotary knob. Instead, they are used thermal sensors (thermistors), which can be located directly on the walls of the evaporator or mounted in the air ducts. Finding them requires disassembling the inner lining of the chamber.
How to distinguish an electronic sensor from a mechanical one?
A mechanical thermostat always has a rotary knob (usually from 1 to 5 or 7) and makes an audible click when switching. The electronic sensor is a small plastic element with two wires, has no controls on the body and is connected to an electronic control board.
Classic location in models with an upper chamber
In standard two-chamber refrigerators Stinol with a top freezer, the thermostat is most often located in the upper right or left corner of the refrigerator compartment. Access to it, as a rule, does not require complete dismantling of the rear wall, but may require removing the lampshade.
The design assumes that the sensitive element (bellows) must read the air temperature in the chamber as accurately as possible. Therefore thermostat they are often hidden behind a plastic cover, which also serves as a lamp holder or a decorative element of the camera ceiling. In some older models, the regulator handle is brought out, and the device body itself is hidden in a niche above the doorway.
- 🔍 Inspect the upper part of the refrigerator compartment: look for a plastic box with wires.
- 💡 Check the lighting: often the thermostat is attached to its side wall or under it.
- 🧊 Pay attention to the back wall: in models with a “crying” evaporator, the sensor may be recessed into the hole behind the rear panel.
- 🔌 Look for the terminal block: a wiring harness always comes from the thermostat, going to the compressor or board.
If you find that the regulator knob is located outside, then the device body itself will be located immediately behind the hole into which it is inserted. To remove it, you often need to carefully pry off the fixing “antennae” or unscrew the screws hidden under the decorative plugs.
Features of searching in No Frost refrigerators
The situation with system refrigerators No Frost is radically different from classic models. Here, the thermostat (or defrost sensor, if we are talking about defrosting) is rarely freely accessible inside the chamber. In such units, thermostat is often integrated into the evaporator control system, which is hidden behind the rear panel of the freezer or refrigerator compartment.
To access the unit in models Stinol No Frost almost always requires complete disassembly of the internal space. You will have to remove all the shelves, dismantle the back plastic panel and, possibly, remove the fan. Temperature sensor In such systems, it is usually attached to the metal body of the evaporator or inserted into a special slot in the duct.
It is important to distinguish between the thermostat for turning on the compressor and the defrost sensor. The first is responsible for maintaining cold, the second is for defrosting the evaporator. In No Frost they can be located in different places: one on the evaporator in the freezer, the other in the cold air supply channel to the refrigerator compartment.
⚠️ Attention: When disassembling the No Frost system, be extremely careful with the plastic latches of the rear panel. Plastic becomes fragile in the cold, and one awkward movement can lead to breakage of the fasteners, which will then have to be restored with glue.
It is also worth noting that in some modern modifications Stinol with the system No Frost electronic control is used, where The physical thermostat is replaced by several temperature sensors. Their location is strictly regulated by the scheme, and searching “at random” here is ineffective.
☑️ Checklist before disassembling No Frost
Removing and accessing the thermostat
The process of removing the thermostat requires sequential steps. First you need to de-energize the unit. Then the adjustment knob is removed (if it is removable) - to do this, you just need to pull it towards you, sometimes helping with a flat screwdriver protected by a cloth so as not to damage the plastic.
If the thermostat is hidden behind the lamp shade, carefully pry up the edges of the lamp shade. In models Stinol it is often held on by latches. After disconnecting the lampshade, you will see the thermostat housing. It can be secured with screws or simply inserted into the grooves. Fixing the thermostat It must be reliable so that vibrations of the compressor do not interfere with the settings.
To remove the device from the niche, you may need to remove the entire upper decorative panel of the refrigerator compartment. In this case, the screws around the perimeter are unscrewed and the panel is removed by moving up and down. After this, access to the back of the thermostat and the insertion point of the capillary tube opens.
| Model Stinol | Thermostat location | Access type | Features |
|---|---|---|---|
| Stinol 101/102 | Inside cameras, top right | Removing the ceiling | Fixing with screws |
| Stinol 103 | Behind the back wall (No Frost) | Full disassembly | Sensor on evaporator |
| Stinol 104 | Outside, above the door | Removing the decor panel | Long capillary tube |
| Stinol 205 | Inside, top left | Removing covers | Combined with the lamp |
When dismantling, be sure to photograph the order in which the wires are connected to the terminals. Connection diagram from different thermostat manufacturers (for example, Tam, K59, Ranco) may differ, and an error in the connection will lead to incorrect operation of the compressor or lack of defrosting.
Diagnostics and serviceability check
After you have reached the node, the question arises: how to understand what Is it Stinol refrigerator thermostatthat is faulty, and not another part? The simplest method is visual and tactile. Inspect the bellows tube for bulges, corrosion, or traces of oil. If the tube is deformed or damaged, the device cannot be repaired.
For a more accurate check, you will need a multimeter. Switch the device to dialing mode. The thermostat contacts in normal condition (at room temperature) should be closed. If you turn the knob, there should be a click and the circuit will open (or vice versa, depending on the type). Lack of response to turning the knob indicates a breakdown of the mechanism.
It is also worth checking the tightness of the bellows. Immerse the sensing tube (if separated) in warm water. If air bubbles appear, there is depressurization. Gas leak The bellows makes the thermostat useless, since the pressure inside does not change when the temperature changes.
⚠️ Attention: Never check a thermostat connected to a 220V network with bare hands or without insulating the probes multimeter. This is life-threatening. Carry out all manipulations with the electrical part only with the power off, using the dialing mode.
Replacing the thermostat: important nuances
If the diagnostics confirmed a malfunction, it is necessary to replace it. The main rule when selecting an analogue for Stinol is compliance with the temperature range and the length of the capillary tube. Original thermostat can be expensive, so high-quality analogues from Tam or K59are often used, but with similar characteristics.
The length of the capillary tube is a critical parameter. If the new tube is longer than the old one, its excess can be carefully twisted into a spiral (at least 4-5 cm in diameter) and placed inside the refrigerator body without bending it. If the tube is shorter, it may not reach the temperature control zone, which will lead to incorrect operation.
When installing a new device, make sure that the sensitive part of the tube fits tightly to the evaporator. In the factory version, it is often fixed with a special bracket or filled with thermal paste/glue for better heat transfer. Poor contact tubes with the evaporator will lead to the fact that the refrigerator will work with long interruptions or will not turn off at all.
Frequently asked questions (FAQ)
Is it possible to repair the Stinol thermostat with your own hands?
Theoretically, you can try replacing the bellows or bending the contacts, but in practice this is impractical. Thermostat repair requires calibration under special conditions. It is easier and more reliable to buy a new device, the cost of which is low, and the resource is comparable to the remaining service life of the refrigerator itself.
Which thermostat is better to install instead of the original one?
Italian thermostats have proven themselves well Tam (for example, series 133) and Turkish K59. When choosing, pay attention to the markings: the numbers after the model name indicate the temperature range. For refrigerators Stinol ranges from -24 to +3 degrees are usually suitable.
Why does the Stinol refrigerator not turn off after replacing the thermostat?
There may be several reasons: the temperature range is incorrectly selected (the thermostat is too “warm”), the capillary tube does not fit tightly to evaporator, or the problem is not in the thermostat at all, but in a freon leak or a compressor malfunction. Also check that the sensor rod is not jammed.
Where is the thermostat located if the adjustment knob is on the external panel?
In such models, the thermostat mechanism itself is located inside the refrigerator compartment, directly behind the hole into which the handle fits. To gain access, you need to remove the top decorative cover of the refrigerator or the inner lining, depending on the design of the specific model Stinol.