Finding the installation location of the thermostat in brand refrigerators Indesit is the first and most important step when Diagnose cooling problems. If your unit stops freezing or, conversely, begins to freeze food to the point of stone, the reason often lies precisely in the malfunction of this sensor. Understanding the design of your model will save time and money by avoiding calling a technician to simply replace a part.
The location of the temperature control element directly depends on the type of refrigerator: it is single-chamber or double-chamber, as well as on the year of manufacture. In older models, the thermostat is often brought outside, while in modern systems it can be hidden inside the chamber or combined with an electronic module. Accurate knowledge of the location necessary for safe repair work without damaging the insulation and other components.
In this article we will analyze in detail all possible placement options, consider the design features of different series and will give clear instructions on access to the device. Before starting any manipulations, be sure to disconnect the refrigerator from the power supply.
Design features of Indesit thermostats
Thermoregulator, or thermostat, in technology Indesit performs the function of the main temperature controller in the refrigeration room camera. It opens the electrical circuit of the compressor when the set temperature is reached and closes it when the temperature rises. In mechanical models, this is a physical switch with a capillary tube that is sensitive to heat.
The device can be installed in either the refrigerator compartment or the freezer compartment, depending on the defrosting system. In models with a system No Frost the logic of operation may differ from classic drip systems. Understanding the operating principle will help you quickly navigate your search.
Visually, the thermostat is a plastic case with an adjustment knob or a rod for a flat-head screwdriver. A long corrugated tube extends from it, the end of which (the sensitive flask) is attached to the evaporator or the chamber wall. It is this element that transmits temperature data inside the mechanism.
⚠️ Attention: The capillary tube of the thermostat is filled with refrigerant and is very thin. If handled carelessly, it can easily be damaged, which will make it impossible to further operate the sensor without replacement.
Modern models Indesit are increasingly equipped with electronic control, where the role of a mechanical thermostat is performed by a temperature sensor (thermistor). It looks like a small plastic cylinder on a wire and connects to the main control board. The location of such sensors varies, but they are always in close proximity to the area whose temperature needs to be controlled.
Where to look in single-chamber refrigerators
In classic single-chamber refrigerators Indesit the thermostat is most often located inside the refrigeration chamber. This is the most common scheme for budget and mid-priced models. You need to look for it in the upper corner, usually on the right or left, next to the lighting lamp.
Access to the mechanical thermostat is through a special hole in the chamber wall. The temperature control knob may protrude outward or be hidden under a decorative trim. To dismantle, it is often necessary to remove the handle itself and the plastic casing that hides the mounting screws.
In some older modifications, the regulator is placed on the outer panel of the case, which simplifies access, but complicates replacement, since partial disassembly of the outer wall is required. If the handle is located outside, then the mechanism itself is hidden between the internal and external contours of the case.
- 🔍 Inspect the upper corner of the refrigerator compartment, look for a plastic block with a handle.
- 🔍 Check for decorative plugs or trims around the lamp shade.
- 🔍 Pay attention to wires running from the adjustment knob deep into the wall.
- 🔍 In models with a remote handle, inspect the upper part of the refrigerator body.
If you do not see obvious signs of a thermostat inside, perhaps your model belongs to a series where the controls are located outside. In such cases, the adjustment knob is located on the top cover of the refrigerator or on the front panel at the top. This is typical for equipment released in the early 2000s.
Location in two-chamber models with No Frost
In two-chamber refrigerators Indesit with a system No Frost the situation is more complicated. Here the thermostat (or defrost sensor) is often hidden behind the plastic panels of the freezer. Mechanical thermostats are less common in such models, giving way to electronic sensors.
If your model does have a mechanical regulator installed, it may be located in the refrigerator compartment, but its sensitive bulb will be routed into the freezer. However, most often in No Frost systems, automation is used to control the fan and heating elements, and the thermostat is located in the evaporator area.
To access the insides of the freezer, you will have to remove all the shelves, drawers and decorative plastic panels on the back wall. This is a labor-intensive process that requires care, as the plastic latches can become brittle after prolonged exposure to low temperatures.
Electronic temperature sensors in such models look like small black or white “buttons” on a wire. They can be installed:
- ❄️ On the evaporator body in the freezer.
- ❄️ In the cold air supply channel between the chambers.
- ❄️ On the rear wall of the refrigerator compartment (in the air circulation area).
- ❄️ In the drainage system to control defrost.
It is important not to confuse the temperature sensor with the defrost sensor. The first controls the cooling of products, the second monitors the temperature of the evaporator during defrosting. They may have the same appearance, but different temperature characteristics.
☑️ Diagnostics before disassembly
Access to the thermostat: step-by-step instructions
The process of gaining access to the thermostat requires sequential steps. Errors at the disassembly stage can lead to breakage of the plastic elements of the refrigerator interior. Start by completely disconnecting the device from the network and defrosting it for 24 hours.
The first step is always to dismantle the interfering elements: shelves, drawers, containers for vegetables. Then remove the courtesy light if it blocks access to the thermostat mounting screws. In some models, the lampshade is held in place by latches, in others by a screw.
Next, you need to remove the plastic cover that hides the thermostat housing. It can be attached with screws or held on with tight latches. Use a flathead screwdriver or a plastic spatula to avoid scratching the plastic.
| Model type | Handle location | Access steps | Tool |
|---|---|---|---|
| Classic | Inside the camera | Remove the handle, unscrew the screws, remove the casing | Phillips screwdriver |
| Remote | Top housing | Remove the top cover of the refrigerator | Screwdriver, key |
| No Frost | Behind the panel | Disassemble the back wall of the freezer | Spatula, screwdriver |
| Electronic | No (sensor) | Get to the sensor in the air duct | Flat screwdriver |
After removing the casing, you will see the thermostat itself with the wires going to it. Pay attention to the wiring markings and color scheme before disconnecting the terminals. It is recommended to take a photo of the connection for proper reassembly.
⚠️ Attention: Plastic becomes very brittle at low temperatures. If you are disassembling the freezer, let it warm up to room temperature to avoid cracks when removing the panels.
If the thermostat is mounted on the evaporator, be extremely careful. Do not apply excessive force to the tubes and fins of the evaporator, as damage to the refrigerant circuit will lead to expensive repairs or disposal of the refrigerator.
Diagnostics and signs of malfunction
Before changing the thermostat, you should make sure that it is the problem. There can be several symptoms of a malfunction, and they often overlap with breakdowns of other components, for example, the start relay or the compressor itself.
The most obvious sign is that the refrigerator does not turn off and works without interruptions, severely supercooling the food. An ice crust on the back wall or complete freezing of the contents of the refrigerator compartment indicates that thermostat contacts they are stuck in a closed position.
The opposite situation - the compressor does not turn on at all, although the light is on and a hum (or silence) is heard. If there is no click when you turn the knob or close the wires, most likely the mechanism is faulty.
It is also worth checking the sensitive flask. If it does not fit tightly to the evaporator or has moved out of place, the temperature reading will be incorrect. Sometimes it is enough to simply adjust the mounting of the bulb to restore normal operation.
For electronic diagnostics, you will need a multimeter. In the dialing mode, the resistance of the thermostat contacts is checked at different temperatures. When cooling (for example, if you put the sensor in the freezer), the resistance should change, opening the circuit.
Frequent replacement errors and precautions
Replacing the thermostat in the refrigerator Indesit seems like a simple task, but beginners often make critical mistakes. One of the most common is incorrect installation of the sensitive bulb. It must be fixed in a regular place with maximum contact with the surface of the evaporator.
Using an unsuitable analogue instead of the original thermostat may lead to incorrect operation. Different models have different response temperature ranges. Installing a sensor with other parameters will either result in the compressor running forever or infrequently turning it on.
Breaking the tightness of the capillary tube during installation is a fatal mistake. If the tube rubs against a metal edge of the housing or a sharp corner, gas will escape and the thermostat will stop responding to temperature. The tube should be laid along the existing grooves and fixed with standard clamps.
- ⚠️ Do not twist the wires, use terminal blocks or soldering.
- ⚠️ Do not leave the capillary tube dangling, fix it with clips.
- ⚠️ Do not install the thermostat “by eye”; accurate fit of the bulb is important.
- ⚠️ Do not ignore grounding if it is provided for by the design.
Another mistake is ignoring the condition of the door seals after repair. If you removed the door or heavily skewed the body for access, check the tightness of the fit. Failure to close the door tightly will cause the thermostat to work in enhanced mode.
Is it possible to install a thermostat from another model?
Technically possible if the dimensions, length of the capillary tube and temperature range match. However, manufacturers use different characteristics for different climate classes. It is better to look for the original part number or a complete analogue in the catalog.
Why does the refrigerator not work correctly after replacement?
The reasons may be incorrect settings (it takes time to stabilize), poor contact of the flask with the evaporator, or a defective new part. Also check if the capillary tube is pinched.
How can you tell that it is the thermostat that is broken and not the relay?
If you close the thermostat wires directly and the compressor starts working and is cooling, the thermostat is to blame. If the compressor hums but does not start or the automatic switch knocks out, the problem is in the relay or motor.
Is it necessary to defrost the refrigerator before replacing it?
Absolutely. Working with electrical equipment in a wet refrigerator is dangerous. In addition, ice can hide fasteners and interfere with access to components.