The situation when Indesit refrigerator the compressor stops turning off is familiar to many owners of this popular equipment. Instead of the usual rhythmic humming with periodic pauses, the unit begins to work non-stop, trying to achieve the set temperature indicators. This not only leads to a significant increase in energy bills, but also creates the risk of complete breakdown of the expensive compressor unit due to overheating.
Users often panic when they hear the continuous hum of the motor, but the cause is not always a complex technical breakdown. In some cases, the problem lies in improper operation, leakage or simple blockage. Understanding why Indesit refrigerator does not turn off for a long time will help you make the right decision: call a technician or fix the problem yourself.
In this article we will analyze in detail the main causes of malfunctions in the thermostat, defrost system and compressor. You will learn how to carry out initial diagnostics, what error codes to pay attention to and in which cases intervention in the electrical circuit is strictly prohibited without special skills.
Faults of the thermostat and temperature sensor
The most likely reason for the continuous operation of the refrigerator is the failure of the thermostat (thermostat). This unit is responsible for opening the compressor power circuit when the desired temperature in the chamber is reached. If the contacts inside the thermostat “stick” in the closed position, compressor receives current constantly and does not stop. In older models Indesit with mechanical control, this is a common problem.
In more modern models with electronic control, temperature sensors perform the role of a thermostat. They transmit signals to control modulewhich, in turn, commands the compressor to stop. If the sensor “lies” and shows that the chamber is too warm, the module will keep the motor on indefinitely. Diagnostics of such elements requires a multimeter to measure resistance.
Symptoms of a malfunctioning thermostat or sensor are often accompanied by the absence of a characteristic click when turned off. Also pay attention to whether the evaporator is freezing excessively, which may indicate a problem with the refrigeration cycle. If you suspect this particular unit, it is worth checking its integrity.
Problems with the No Frost system and defrost sensor
If your Indesit refrigerator is equipped with a system No Frostthen the reason for continuous operation may be a failure in the defrost cycle. In normal mode, the evaporator periodically heats up to melt ice. The defrost sensor and heating element are responsible for this process. If the sensor does not work or the heating element burns out, a “coat” of ice grows on the evaporator.
The ice shell blocks the circulation of cold air. Sensors in the chamber record that the temperature does not drop to normal and give the command to the compressor to work without interruption. As a result, you hear a constant hum, but the refrigerator compartment may be warmer than usual, despite the efforts of the motor.
To test this hypothesis, it is necessary to inspect the evaporator. It is often necessary to completely defrost the unit within 24 hours. If, after defrosting, the refrigerator began to work normally with pauses, then the problem was due to ice. However, if the ice builds up quickly again, you will have to change defrost sensor or heating element.
⚠️ Attention: When diagnosing the No Frost system, be sure to disconnect the device from the power supply. Working with heating elements and electrical circuits under voltage is life-threatening.
Freon leakage and seal failure
One of the most serious reasons why Indesit refrigerator does not turn off for a long time is a refrigerant (freon) leak. Gas circulates in a closed loop, and if a microcrack appears in the tubes or connections, the pressure drops. The compressor tries to compensate for the lack of cooling capacity, working to wear out.
When freon leaks, you can often notice the following signs:
- 🧊 The condenser (grid at the back) remains only partially cold or warm.
- ❄️ In the freezer, food begins to thaw, although the compressor is constantly humming.
- 🔊 The motor may work louder than usual or make gurgling sounds.
- 🌡️ The temperature in the chambers does not drop to the set values.
It is difficult to find the leak on your own, since the gas has no odor. The technician uses a leak detector or the soap foam method. If a leak is confirmed, not only refilling with freon will be required, but also soldering of the damaged area. It is important to understand that simply “adding gas” is a temporary solution; the leak needs to be eliminated.
Clogged capillary tube
Another technical malfunction leading to endless operation of the motor is a clogged capillary tube. Freon is throttled in this thin copper tube. If there is moisture, oxidation products or debris in the system, a plug will form. The refrigerant cannot circulate freely, and the pressure in the system is disrupted.
Unlike a leak, when clogged compressor it can work very quietly or, conversely, with a strong strained hum. The condenser at the back of the refrigerator often remains cold. The pressure at the outlet of the compressor increases, and at the inlet it drops, which can lead to rapid failure of the motor.
Removing the blockage is a complex procedure that requires purging the system with nitrogen under high pressure and replacing the filter-drier. It is almost impossible to perform this operation efficiently at home. If you hear that the motor is trying to start, hums for a few seconds and clicks, and then the cycle repeats, this may be a sign of serious hydraulic resistance in the system.
Is it possible to break through the blockage yourself?
There is a method of “pushing” the blockage, when the technician creates excess pressure in the system to break through the ice or mud plug. However, without professional equipment and skills, this can lead to ruptured pipes or damaged compressor valves. It is better to entrust this work to a specialist.
Malfunction of the compressor and start relay
The refrigerator “engine” itself can also be the source of the problem. If compressor has exhausted its resource, its piston group may be exhausted. In this case, it is not able to create the necessary pressure for effective cooling. The motor runs constantly, trying to compensate for low performance, but cannot reach the desired temperature.
It is also worth paying attention to the start relay. This small element is responsible for starting the engine. If the relay is faulty, the contacts may not open and the compressor windings are constantly energized. This is an extremely dangerous situation that threatens fire. Check to see if the relay housing is overheated and if there is a burning smell.
Diagnostics of the compressor includes measuring current consumption. If the current is significantly lower than the nominal value, it means that the compressor is running “idle” (leakage, blockage). If the current is higher than normal, an interturn short circuit of the windings or mechanical wear is possible. In both cases Indesit refrigerator requires serious repairs.
The influence of external factors and improper operation
Before committing a breakdown, it is worth eliminating external factors. Often the reason lies in how you use the refrigerator. For example, if you have just placed a large amount of warm food into the chamber, the compressor will run longer than usual to cool the volume. This is normal, but should not last for days.
Check the tight fit rubber sealing collar to the door. If the seal is dirty, damaged, or the door is warped, warm air constantly enters the chamber. Sensors detect the temperature increase and do not allow the compressor to rest. Simply cleaning the seal or adjusting the hinges can solve the problem.
It is also important to consider the room temperature. If the refrigerator is located near a radiator, stove, or in direct sun, the cooling system has to work under increased load. In a hot room, the heat transfer of the condenser deteriorates, and the operating time of the compressor increases.
Diagnostics using error codes and a table of symptoms
Modern models Indesit with electronic control can report problems through an indication on the panel or flashing lights. Even if there is no obvious code, a combination of symptoms will help narrow down the search. Below is a table that helps to compare the symptoms with a possible malfunction.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The compressor is humming, but there is no cold | Freon leak or blockage | High (needs a technician) |
| The refrigerator freezes, but does not turn off | Thermostat/sensor is faulty | Medium (can yourself) |
| Heavy ice in the freezer | No Frost system failure | Average |
| The hum is interrupted by clicks | The starter is faulty relay | Low (part replacement) |
For accurate diagnostics, electronic models may require switching to service mode. This is usually done using a combination of buttons on the control panel. For example, holding down the “Defrost” and “Super Freeze” buttons for several seconds. In this mode, you can see the current sensor readings.
⚠️ Attention: Switching to service mode and changing parameters without knowledge may reset the factory settings. Do this only if you are confident in your actions or record the initial values.
When you need to call a specialist
Despite the desire to save money, there are situations when self-repair is impractical or dangerous. If you have identified a freon leak, special equipment is required to evacuate the system and refill it. You cannot simply “refuel” the refrigerator - this will disrupt the operation of the compressor.
A technician is also needed if the compressor itself needs to be replaced. This is a labor-intensive process that includes resoldering copper pipes, installing a new motor and filter drier. Incorrect soldering can lead to repeated failure in a short time.
If the problem persists after defrosting and checking the seals, and you do not have the skills to work with a multimeter and electrical circuits, it is better to contact a service center. Professional diagnostics are often cheaper than buying unnecessary spare parts at random.
☑️ Checklist before calling a technician
Why does the new Indesit refrigerator not turn off for a long time on the first day?
When turned on for the first time or after a long transportation, the refrigerator must gain temperature in the empty chambers. This process can take from 6 to 24 hours. At this time, the compressor operates almost without interruption, which is the norm. Do not load food during the first hours of operation.
Can a dirty condenser cause constant operation?
Yes, if the condenser grille at the back or bottom of the refrigerator is clogged with dust and animal hair, heat transfer deteriorates. The compressor overheats and runs longer to compensate for poor cooling. Regular cleaning of the condenser with a vacuum cleaner prolongs the life of the unit