The situation when Indesit refrigerator stops turning off and buzzes without interruption is familiar to many owners of this popular Italian equipment. Typically the unit operates cyclically: it turns on, cools the chamber to a set temperature, then turns off to rest. However, if the motor-compressor hums continuously, this not only increases electricity bills, but also threatens serious equipment breakdown.
The constant operation of the compressor indicates that the system cannot achieve the required temperature parameters or the sensors record incorrect data. In some cases, the problem lies in a banal violation of operating rules, but most often we are talking about a technical malfunction of the components, requiring the intervention of a specialist.
In this article, we will analyze in detail the main reasons why Indesit refrigerator does not turn off, and we will determine what actions can be taken independently, and when calling a specialist is inevitable. Ignoring the problem in the early stages can lead to complete failure of the compressor.
Seal failure and problems with the door
The most common and easily eliminated reason for the continuous operation of the motor is a violation of the tightness of the refrigeration chamber. If warm air constantly enters the chamber from the outside, temperature the inside cannot drop to the specified level. Electronics or a mechanical thermostat “think” that there is not enough cooling and do not give a command to turn off the compressor.
The first thing to check is the tightness of the door. Often the problem lies in a dirty seal. Over time, the rubber cuff around the perimeter of the door becomes covered with sticky residue from food or crumbs, due to which it loses elasticity and ceases to fit tightly to the body.
⚠️ Attention: Never use aggressive chemical solvents or abrasive sponges to clean the seal, as this can destroy the rubber structure and aggravate the problem leaks.
It is also worth checking whether the door is warped. If the refrigerator is not level or has been subjected to mechanical impact, the geometry could be disrupted. In this case, even a clean seal will not save the situation, and Indesit refrigerator will work in enhanced mode.
Also check the door hinges. If they become loose or rusty, the door may open on its own. Even a minimal gap of a few millimeters leads to a constant flow of heat.
☑️ Diagnosis of door tightness
Malfunctions of the thermostat and sensors temperature
The thermostat (thermostat) is the “brain” that controls turning the compressor on and off. Older models Indesit use a mechanical regulator, while new ones use electronic sensors (NTC thermistors). If this element fails, it stops transmitting the correct signal about the temperature in the chamber.
In the event of a mechanical breakdown, the contacts inside the thermostat may “stick” in the “on” position. Then the compressor will work endlessly, even if ice has already formed inside the refrigerator. Electronic sensors may give erroneous readings due to oxidation of the contacts or an internal break.
Diagnostics of the thermostat requires caution. For mechanical models, the elimination method is often used: disconnect the wires from the thermostat and short circuit them directly. If the compressor starts, then the problem is in the regulator. However, for electronic systems Indesit No Frost a multimeter is required and checking the resistance of the sensor at different temperatures.
How to check a mechanical thermostat
To check, remove the thermostat and immerse its sensitive tube in ice water for 2-3 minutes. Then test the contacts with a multimeter. If the device shows an open circuit (infinity), and the thermostat should be turned on when heating, it is faulty. If the contacts ring even after cooling, the thermostat is “stuck” and requires replacement.
Replacing a thermostat is not the most difficult procedure, but it requires precision. It is important to choose an analogue with identical characteristics, otherwise the temperature regime of the refrigerator will be disrupted.
Refrigerant leakage and problems with the circulation system
If the refrigerator hums, but does not cool or cools very weakly, while the compressor is hot and does not turn off, there is a high probability freon leaks. The refrigerant circulates in a closed circuit, and if its seal is broken (microcracks in the evaporator, corrosion of tubes), the gas evaporates. The compressor tries to compensate for the lack of cooling capacity, working towards wear.
In models with the system No Frost leakage can occur in the foamed part of the housing or in the heating circuit of the door perimeter. Finding a leak on your own without special equipment (leak detector, pressure gauge station) is almost impossible.
Symptoms of a leak can also be:
- 🔹 Swelling of the back wall inside the freezer.
- 🔹 The appearance of oily spots under the refrigerator (oil comes out along with gas).
- 🔹 The compressor runs “idle” and gets very hot.
- 🔹 Uneven cooling (warm above, cold below).
⚠️ Attention: Trying to refill the refrigerator with freon yourself without eliminating the leak is a waste money. The gas will leave again after a short time, and the compressor may burn out from operation without proper lubrication with oil, which circulates along with freon.
Repair in case of a leak includes finding the location of the damage, soldering the tubes, evacuation of the system and charging with new refrigerant. This work should only be performed by a certified technician.
Clogged capillary tube and compressor malfunction
Another technical reason why Indesit refrigerator does not turn off is clogged capillary tube. This is a thin element of the system where the refrigerant is throttled. If there is moisture or oxidation products in the system, an ice or dirt plug may form.
When clogged, the compressor has difficulty pushing freon, the discharge pressure increases, and there is no cold at the outlet of the evaporator. The motor is overloaded, hums louder than usual and does not turn off. A telltale sign is that the condenser (grid at the back) may be only partially hot or cold.
The compressor itself may also be faulty. Wear of the valve group leads to a drop in performance. The motor hums, trying to create the necessary pressure, but physically cannot cool the chamber to the required values. In such cases, a specific metallic clang or knock is heard.
The influence of the No Frost mode and the defrosting system
Owners of modern models Indesit often face a problem when the refrigerator does not turn off due to a failure in the automatic defrosting system. If the defrost heating element, timer or defrost sensor fails, the evaporator becomes covered with a “coat” of ice. The air stops circulating, the temperature sensor does not sense the cold and does not give a command to stop the compressor.
Visually this can be manifested by the fact that it is cold in the freezer, but warm in the refrigerator compartment. Or barely warm air is blowing from the air ducts. Ice blocks the fans and the system operates in emergency mode.
Diagnostics often require a complete defrost of the refrigerator within 24 hours. If, after connecting to the network, the unit worked normally, but a week later the problem recurred, it means that one of the elements of the defrosting system is faulty and requires replacement.
The main elements of the system that the technicians check:
- ❄️ Evaporator heating element (could burn out).
- ❄️ Defrost sensor (does not see that the ice has melted).
- ❄️ Thermal relay (protecting the heating element from overheating).
- ❄️ Control module (does not supply voltage to the heating element).
External factors and operating conditions
The cause of a breakdown does not always lie inside the unit. Sometimes Indesit refrigerator works constantly due to improper operating conditions. For example, if the equipment is installed next to a heating radiator, stove or in direct sunlight, heat exchange is disrupted.
The condenser located at the back or in the side walls must effectively transfer heat to the environment. If there is no 5-10 cm gap around the refrigerator for ventilation, or the room is too hot (above +30°C), the compressor will work almost without stopping.
It is also worth considering the volume of loaded products. If you have just placed a large amount of warm food into the compartment (for example, after cooking or shopping), the refrigerator will take a long time to cool it down. This is normal mode, but if you constantly load warm products, the equipment will not have time to turn off.
Also check the temperature settings. If you accidentally set the “Super Freeze” mode or the minimum temperature, the refrigerator will work continuously. Return the settings to the position 2-3 (average value) and monitor the cyclical operation.
Diagnostic table of main faults
For convenience, we will systematize the main symptoms and probable causes in a summary table. This will help you initially assess the condition of the equipment before calling a technician.
| Symptom | Probable cause | Difficulty of repair | Need for a technician |
|---|---|---|---|
| Buzzing, but not freezing, condenser is cold | Freon leak or blockage | High | Mandatory |
| Works without stopping, there is ice inside | Faulty thermostat | Average | Recommended |
| Noisy, vibrates, does not turn off | Compressor wear | High | Required |
| It cools weakly, the motor is hot | Problems with the defrosting system (No Frost) | Average | Desirable |
| Works constantly after product loading | Normal mode or heat flow | Low | Not required |
As can be seen from the table, many serious problems require professional diagnostics. Independent repair of components related to the refrigerant and the electrical part of the compressor can be dangerous.
When an urgent call to a specialist is necessary
If you have checked the tightness of the door, made sure that the installation and settings are correct, and Indesit refrigerator continues to work non-stop, most likely a repair is required. Particular attention should be paid to the smell of burning or burnt wiring - in this case, the equipment must be immediately de-energized.
Long-term operation of the compressor without stopping leads to its overheating. Engine oil loses its properties, the crankshaft may jam, and then replacing the compressor will become inevitable. The cost of such repairs is a significant part of the price of a new refrigerator.
⚠️ Attention: If, after defrosting for 24 hours, the refrigerator stops turning off again after 2-3 days, do not continue the experiments. Further operation can finish off components that are still working, such as the control module.
A timely contact with the service center will allow you to replace a failed sensor or eliminate a leak at an early stage, preserving the main unit. The technician will conduct diagnostics using professional equipment and accurately identify the unit that requires attention.
Frequently asked questions (FAQ)
Why a new one Does the Indesit refrigerator work continuously on the first day?
This is normal. After the first loading of products and turning on, the empty chamber takes time (up to 24 hours) to enter operating mode and freeze the walls of the evaporator. If after a day it does not turn off, check the settings.
Is it possible to repair an Indesit refrigerator with your own hands?
You can replace the seal, thermostat (mechanical) or light bulb yourself if you have the tools. Repairing the freon circulation system, replacing a compressor or electronic module requires special equipment and knowledge; it is better to entrust this to a pro.
How long should a refrigerator normally work before shutting down?
In normal mode, the operating coefficient is about 40-50%. This means that for 10 minutes of work there should be 10-15 minutes of rest. If the operating cycle exceeds 40 minutes without a break, this is a cause for concern.
What to do if the refrigerator hums, but does not freeze?
Most likely, there is a freon leak or the capillary tube is clogged. It is necessary to turn off the device, defrost it and call a technician to look for leaks and refill it.