Many owners of household appliances notice that their refrigerator works not continuously, but cyclically. This is an absolutely normal process due to the operating principle of the compressor. Brand models Indesit are characterized by certain temperature thresholds, upon reaching which electronics or a mechanical thermostat send a signal to start the engine. Understanding these cycles helps the user distinguish normal operation from a malfunction.
Usually, the compressor unit turns on when the temperature in the chamber rises several degrees above the value you set. If you set +4°C, then the launch can occur at +6°C or +7°C. The variation depends on the model, refrigerant type and operating conditions. It is important not to confuse these cycles with the constant hum of the motor, which may indicate problems.
In this article we will look in detail at how thermostat the Indesit technique works, what factors influence the frequency of switching on and when to sound the alarm. You will learn how to properly configure the equipment so that the food remains fresh and the electricity bills do not increase.
The principle of operation of the thermostat and the cooling cycle
The main element responsible for starting and stopping the engine is thermostat (or the temperature sensor in models with No Frost). It is he who “feels” when the chamber becomes too warm. Classic models with a drip defrosting system use a mechanical regulator that closes the circuit when the temperature rises.
The process is as follows: after the compressor has cooled the chambers to a predetermined minimum, it turns off. At this moment Indesit goes into standby mode. The products and the walls of the chamber gradually release the accumulated cold, and the temperature begins to slowly rise. As soon as it reaches the upper threshold, the thermostat is activated and the cycle repeats.
How does the No Frost sensor work?
In No Frost systems, the temperature sensor is often hidden behind a plastic panel inside the chamber. It reads data not from the air, but from the evaporator or air flow, which provides more accurate control, but requires periodic checking for the presence of ice crust.
It is worth noting that the frequency of these cycles directly depends on the thermal insulation and tightness of the doors. If the seal is worn out, warm air will penetrate inside faster, causing compressor to turn on more often. This leads to increased wear and tear of the equipment.
Standard temperature thresholds for Indesit
For most refrigerator models Indesit there are average factory settings that are considered optimal for storing food. At what temperature does the unit turn on in normal mode? Typically, the difference between turning on and off is about 2-4 degrees Celsius.
If you set the average value on the regulator, the compressor will start when the thermometer shows approximately +5...+7°C in the main chamber. In the freezer compartment these values drop to -18...-20°C. However, the exact numbers may vary depending on the device series.
- 🌡️ Main chamber: compressor start at +6°C, stop at +2°C (at medium setting).
- ❄️ Freezer: on at -16°C, off at -20°C.
- 🔌 Super freezing mode: works forcibly, ignoring standard shutdown thresholds.
It is important to understand that the sensor does not react instantly. There is a slight inertia that prevents too frequent switching on and off, the so-called “clocking”. This protects electrical circuit and the starting relay from overloads.
Factors influencing the frequency of compressor starts
Frequent switching on refrigerator does not always indicate a breakdown. There are many external factors that cause the thermostat to turn on more often than usual. First of all, this is the ambient temperature in the room. In the summer, when the kitchen is hot, the heat exchange of the outer walls occurs more intensely, and the motor has to work more actively.
Another important aspect is the loading of the chambers. An empty refrigerator cools down quickly, but it also heats up quickly, since there is little air and the heat capacity is small. On the contrary, fully loaded with food Indesit holds the cold better, but after each addition of warm food it takes a lot of time to restore the mode.
⚠️ Attention: If you have just installed the refrigerator or defrosted it, the first cooling cycle can last up to 10-12 hours without stopping. Do not try to load a large number of products at this time.
It is also worth considering the tightness. Frequent opening of doors, especially in a hot room, leads to a massive influx of moist warm air. The sensor detects a sharp jump in temperature and gives a command to start the motor motor.
Diagnostics: normal or malfunction?
How to determine that thermostat or another system is not working correctly? The key symptom is an imbalance of work and rest time. Normally, the refrigerator operates approximately 30-40% of the time of the total cycle. If it hums constantly or, conversely, is silent for hours, this is a reason for diagnosis.
Pay attention to the nature of the sound. If, when you try to turn on, you hear a click, but the motor does not start, or the hum lasts 2-3 seconds and stops abruptly, there may be a problem with the start relay or the compressor itself. In such cases, the temperature in the chamber will begin to rise, but switching on will not occur.
| Symptom | Probable cause | Action |
|---|---|---|
| Works without stopping | Freon leakage or wear compressor | Call a technician |
| Rare starts | Thermostat malfunction (sticking) | Replace the sensor |
| Clicks without starting | Starting relay burnt out | Replacing the relay |
| Short cycles | Clogged capillary or excess freon | System diagnostics |
Another alarm signal is the formation of a “coat” or ice in the main chamber (for drip systems). This may indicate that the thermostat does not “feel” sufficient cooling and does not give a command to turn off, or, conversely, turns on too early, not allowing the evaporator to completely thaw.
Setting the thermostat in different models
Temperature control in technology Indesit can be implemented in different ways. Budget and older models use a mechanical “twist” inside the camera. Usually it has a gradation from 1 (minimum cooling) to 5 or 7 (maximum). Position "0" completely turns off the compressor.
In more modern electronically controlled models, the setting is made through a display on the door or a hidden panel. Here you set specific degrees. The system itself decides at what temperature to turn on the unit, based on the established algorithms.
☑️ Correct setting of the refrigerator
It is not recommended to set the mechanical regulator to maximum unless absolutely necessary. This forces the compressor to work at its limit, reducing its life. It is optimal to keep the regulator in the middle position, adjusting it only when the season changes or the chambers are full.
⚠️ Attention: In models with mechanical control, do not try to forcibly turn the thermostat knob counterclockwise beyond the “0” mark. This can lead to damage to the regulator rod.
The influence of the external environment and placement
The location of the refrigerator Indesit in the room plays a critical role in its temperature behavior. If the device is placed close to the wall or in a niche without gaps, heat from the condenser (black grille at the back) is not removed. This leads to overheating of the system and more frequent switching on to maintain cold inside.
It is also important to consider the proximity to heat sources. Heating radiators, ovens or direct sunlight heat up the housing. The sensors react to the general thermal background, and compressor is forced to turn on more often to compensate for external heating.
Drafts are another hidden enemy. If the refrigerator is in the path of cold air flows (for example, near a frequently opened window in winter), this may confuse the readings of the sensors, especially in models where the sensor is located close to the wall of the case.
Minimum distances for installation
For effective heat transfer, leave a minimum of 5-10 cm of clearance between the back wall of the refrigerator and the wall, as well as on the sides, if the design allows it kitchens.
Frequently asked questions (FAQ)
Why does the Indesit refrigerator turn on every 5 minutes?
Turning on too frequently (short cycle) often indicates a refrigerant leak, a clogged capillary tube or a malfunction of the thermostat. This may also be a consequence of overheating of the compressor due to poor ventilation.
Is it possible to regulate the temperature in the freezer separately?
In most single-compressor models Indesit the temperature is regulated alone for the entire refrigerator. Separate adjustment of the freezer is possible only in two-compressor models or when using dampers in No Frost systems (if provided for by the design).
What to do if the refrigerator does not turn on for a long time after defrosting?
After defrosting and washing, let the refrigerator stand turned off for 2-3 hours. Then turn it on empty. The first set of temperatures may take up to 12 hours. If during this time the compressor does not start or does not cool, diagnostics are required.
Does the amount of food affect the start temperature?
Yes, directly. A full refrigerator stays cold longer (the heat capacity of food is higher than that of air), so rest cycles can be longer. An empty refrigerator heats up faster from warm air when the door is opened.
Is it normal that the walls inside are warm?
In some models, the side walls may heat up during operation of the compressor, since the condenser tubes pass there. This is normal for heat dissipation. However, if only one local point is heated or there is a burning smell, this is a sign of a malfunction.