The situation when a modern refrigerator Indesit stops turning off and hums around the clock causes reasonable concern for any owner. This is not just an irritating noise that interferes with sleep, but also a signal that compressor it is working for wear, which will inevitably lead to its overheating and costly failure. If you notice that the unit is humming without interruption, you must immediately begin diagnostics to prevent food spoilage and equipment breakdown.
In most cases, the reason lies in a violation of the tightness of the circuit or failures in the control system, but do not immediately panic. You can often fix the problem yourself by checking simple settings and the condition of the seals before calling an appliance repair professional. In this article, we will analyze in detail the algorithm of actions that will help you understand why refrigerator compartment does not reach the desired temperature and why the motor does not go into standby mode.
The first thing you need to do is listen to the operation of the unit and check if the fast freezing or super-cooling mode is turned on. Sometimes users accidentally activate these functions, forcing the equipment to work at its limit, and forget to turn them off, which leads to continuous operation of the compressor.
Checking the settings and operating mode
The most commonplace, but most common reason for continuous operation is the activated mode "Super Freeze" (Super Freeze). In refrigerators Indesit this mode is designed to quickly cool large quantities of fresh food, and when turned on, the compressor runs continuously, ignoring standard temperature shutdown thresholds. The corresponding indicator usually lights up on the control panel, which is easy to miss if you do not watch the blinking lights.
If you find the quick freeze indicator lit, you must forcefully disable this mode. To do this, find a button with the corresponding icon (often a snowflake or an inscription Super) and hold it for 3-5 seconds until the indicator goes out. After this, the refrigerator will take some time to return to normal operation and pause the compressor.
⚠️ Attention: Long-term operation in super-freezing mode (more than 24 hours) can lead to freezing of food in the main chamber and a significant increase in energy consumption.
It is also worth checking the installed temperature. If the regulator is set to the minimum value (maximum cold), and the room is hot, the unit may not physically have time to reach the set shutdown point. Try setting the average values, usually +4°C for the refrigerator compartment and -18°C for the freezer, and watch the cycle of operation for several hours.
Diagnostics of seals and tightness
The second most common reason is a violation of the tightness of the refrigeration chamber. If warm air from the room constantly flows inside through a loose door, temperature sensors record the increase and command the compressor to work without stopping. The main load in this case falls on the sealing rubber (cuff), which over time dries out, cracks or simply becomes dirty.
Carefully inspect the rubber contour around the entire perimeter of the door. There should be no adhered dirt, crumbs or greasy residue that would interfere with a tight seal. Wipe the seal with a soft cloth soaked in soapy water and check for visible tears or dents. Pay special attention to the corners of the door and the area around the handle, where wear occurs most quickly.
There is a simple and reliable way to test for leaks, known as the "sheet of paper" test. Take a regular A4 sheet, open the refrigerator door Indesit and press the sheet with the door so that half of it hangs out. Try to pull out the sheet:
- 📄 If the paper is pulled out with noticeable force and breaks, the seal is OK.
- 📄 If the sheet falls out on its own or is pulled out too easily, the fit is broken in this place.
- 📄 If the sheet passes freely in several places, replacement is required seal or adjusting the hinges.
If the test shows a leak, but the rubber is intact, the door itself may be warped. Check the horizontal installation of the refrigerator using a building level. The legs of the unit must be unscrewed so that the body is slightly tilted back, which ensures automatic closing of the door under the influence of gravity.
Problems with the thermostat and sensors
If everything is in order with the door and settings, the next one that comes under suspicion is thermostat (thermostat). This device is responsible for turning the compressor on and off depending on the temperature inside the chamber. In older models Indesit with mechanical control, the thermostat is a relay with a bellows, which, when cooled, contracts and opens the circuit. If the bellows has lost its tightness or the contacts are stuck, the compressor will work constantly.
In more modern models with electronic control (No Frost, Total No Frost), the thermostat function is performed by air sensors. There may be several of them: in the refrigerator compartment, in the freezer, and even in the evaporator area. If one of the sensors fails and shows incorrect data (for example, “it’s warm in the chamber,” although it’s cold there), the “brain” of the refrigerator will drive the motor without interruption.
For initial diagnostics of the thermostat in mechanical models, you can try the following method:
- Find the temperature regulator (usually inside the refrigerator compartment).
- Turn the knob to the "0" or "Off" position.
- Listen to see if there is a click and whether the compressor has stopped.
If after turning off the regulator the motor is silent, then the problem is most likely in the thermostat itself or in a freon leak (more on this below). If, even when the regulator is turned off, the compressor continues to hum, this may indicate sticking contacts of the start relay or a faulty control wiring.
Where is the thermostat in Indesit?
In mechanical models, the thermostat is often located inside the refrigerator compartment, under a plastic cover on the side wall or above the light bulb. You can get to it by carefully prying up the cover with a screwdriver.
Refrigerant leak and system blockage
One of the most serious technical malfunctions is leakage refrigerant (of freon). If a microcrack has formed in the circuit (often in the foamed part of the housing or in the evaporator), the gas gradually evaporates. The pressure in the system drops, and the compressor tries to compensate for the lack of cold by operating in continuous mode. However, no matter how much it works, it is not possible to achieve the required temperature.
An indirect sign of a leak may be a hot condenser (rear grille or side walls) only partially, or, conversely, a cold evaporator. Also, frost may appear on the tubes only at the beginning of the circuit, and then the tube remains warm. This is a sure sign that there is not enough freon in the system for a full cooling cycle.
Another similar problem is clogged capillary tube. Oil breakdown products or moisture entering the system can clog the thin channel, preventing the circulation of freon. The symptoms are similar to a leak: the compressor runs non-stop, heats up, but there is no cold. It is impossible to eliminate a leak or blockage on your own - you need to call a specialist with evacuation and filling equipment.
| Symptom | Probable cause | User actions |
|---|---|---|
| The compressor is hot, there is no cold | Freon leak or blockage | Call a technician to look for a leak |
| Frost only at the entrance to the evaporator | Lack refrigerant | Do not defrost forcibly, wait for a technician |
| You can hear bubbling or gurgling | Air in the system or low freon | Check the doors for tightness |
| The refrigerator turns off, but does not freeze | The compressor is faulty (loss of performance) | The unit needs to be replaced |
⚠️ Attention: Neither Under no circumstances should you try to pierce the tubes or change freon yourself without special equipment. This is life-threatening and can permanently damage the equipment.
Malfunction of the compressor and start relay
If all the previous points are checked, and the refrigerator Indesit continues to work without interruption, perhaps the problem lies in the very heart of the unit — compressor. Over time, the motor may lose its performance. It hums and vibrates, but does not create enough pressure to circulate freon. As a result, the temperature sensors “see” that there is no cold and do not give a command to turn off the compressor. A frequent reason for continuous operation is a faulty compressor. This small element is responsible for starting the engine. If the contacts inside the relay are burnt or stuck in the closed position, current continues to flow to the compressor windings even when it should be resting. This can be visually noticed if the relay gets very hot or makes a characteristic crackling noise.
A common cause of continuous operation is faulty starting relay. This small element is responsible for starting the engine. If the contacts inside the relay are burnt or stuck in the closed position, current continues to flow to the compressor windings even when it should be resting. This can be visually noticed if the relay gets very hot or makes a characteristic crackling noise.
Replacing the starting relay is one of the simplest and cheapest repair operations. You will need:
- 🔧 New part (the relay is selected strictly according to the markings on the body of the old one).
- 🔧 Screwdriver for removing the back cover.
- 🔧 Pliers for removing terminals.
☑️ Replacing the start relay
However, if the compressor itself operates intermittently, gets very hot or makes unnatural sounds (metallic clanging, knocking), it will most likely need to be replaced. This is a complex and expensive repair, which often requires re-welding the tubes and evacuating the system, so it is not always economically feasible.
The influence of external factors and operating conditions
Sometimes the reason for endless operation lies not in a breakdown, but in incorrect operating conditions. The refrigerator Indesit, like any other equipment, is sensitive to the environment. If the unit is installed next to (battery, stove, in direct sunlight), it will try to compensate for external heating, working at its maximum capacity.
The distance to the walls is also critically important. The rear grille of the condenser must have free air access for heat exchange. If the refrigerator is moved close to the wall (less than 5-7 cm), the hot air does not escape, the cooling efficiency drops, and the motor does not turn off. Check whether the rear grille is dusty - the layer of dust acts as a heat insulator, interfering with heat removal.
Another factor is food loading. If you have just placed a large amount of warm food into the chamber or filled the empty refrigerator to capacity, it will take a long time (up to 24 hours) for it to return to normal. In this case, continuous operation during the first day is the norm.
When you need to call a specialist
Self-diagnosis helps to weed out simple problems, but there are situations where professional intervention cannot be avoided. If you have checked the seals, settings, relays and installation conditions, and the refrigerator Indesit still hums for days and does not freeze, this is a reason to contact a service center. Especially if you notice oily spots under the unit or smell a burning smell.
The technician will conduct diagnostics using a manifold, check the current consumption of the compressor with an ammeter and determine exactly where the fault lies: in a leak, blockage or electrical. Repairing the refrigerant circulation system requires a license and special equipment, so you should not try to do it yourself.
Remember that timely repairs are cheaper than buying a new refrigerator. Ignoring the “won’t turn off” problem can lead to complete combustion of the compressor, the cost of which is up to 70% of the price of a new device.
Why does the refrigerator turn on immediately after being turned off?
If the refrigerator turned off, but literally after a few seconds or a minute it turned on again, this may indicate a short cycle time. Reasons: 1) The thermostat is faulty (does not feel cold). 2) Freon leak (temperature rises quickly). 3) The door seal is broken. 4) A blockage in the system, causing the compressor to quickly heat up and trigger the protection.
Is it possible to operate the refrigerator if it does not turn off?
For a short time (several hours) - it is possible, for example, with quick freezing. Long-term work (a day or more) is strictly not recommended. This will lead to overheating of the compressor windings, oil burnout, jamming of the piston group, and other failure of the motor. Electricity consumption will also increase by 2-3 times.
How long should an Indesit refrigerator operate normally?
Under normal conditions, the compressor operating cycle is approximately 10-15 minutes of operation and 20-30 minutes of rest. The ratio of working time to rest time should be approximately 1:2 or 1:3. If the refrigerator works for 40 minutes and rests for 5, this is a sign of a malfunction.
What to do if the refrigerator does not turn off after defrosting?
After complete defrosting, the refrigerator takes time (from 2 to 6 hours) to return to mode. During this period it can work continuously. If after 6-8 hours of operation without interruptions there is still no cold or the compressor does not stop, check the tightness of the door closure (food could have moved) or the presence of a freon leak.