The situation when a brand refrigerator Indesit works without interruptions and does not turn off is an alarming signal for any owner. Continuous operation of the compressor indicates that the cooling system cannot reach the set temperature parameters. This leads to a significant increase in electricity bills and creates the risk of complete breakdown of an expensive unit in the very near future.
In modern models, be it Indesit NBS 18 or older series, the electronics try to compensate for the loss of cold, causing the motor to hum for days. Ignoring the problem often leads to compressor wedge or failure of the starting relay. In this material, we will analyze the main reasons why the equipment stopped turning off and methods for eliminating them.
Primary diagnostics can be carried out independently, but it is important to understand the limits of your capabilities. If you hear extraneous sounds or smell burning, use should be stopped immediately. Below is a detailed analysis of possible failure scenarios.
Malfunctions of the thermostat and temperature sensors
The most common reason why the refrigerator Indesit does not stop the cooling cycle is the failure of the thermostat. This mechanical sensor is responsible for opening the compressor power circuit when the desired temperature in the chamber is reached. If its contacts are stuck in the “on” position or the capillary tube has lost its seal, the motor will hum endlessly.
In models with a system No Frost and electronic control, air sensors perform the thermostat function. Their readings may be distorted due to oxidation of the contacts or a software failure of the controller. In such cases, the alarm indicators may light up on the display, but the compressor will continue to operate.
⚠️ Attention: Before replacing the thermostat, make sure that the sensing element tube is not pinched and is correctly positioned in the evaporator. Incorrect installation will lead to incorrect operation of even a serviceable part.
Checking a mechanical thermostat is possible using a multimeter in continuity mode. When the temperature drops (you can cool the sensor in the freezer), the contacts should open. If this does not happen, replacing the unit is required.
How to check the thermostat with a multimeter?
To check, disconnect the wires from the thermostat and put the multimeter in resistance measurement mode (Ohm). At room temperature the contacts should be closed (beeping). If you put the sensor in the freezer for 10-15 minutes, the circuit should break (resistance is infinite). If the circuit does not break in the cold, the thermostat is faulty.
Refrigerant leakage and violation of the tightness of the circuit
If the refrigerator Indesit hums, but does not give cold, or freezes very weakly, there is a high probability freon leaks. The refrigerant circulates in a closed circuit, and if the seal is broken, its quantity decreases. The compressor tries to compensate for the lack of gas by working in increased mode, but physically cannot create the required pressure.
Leaks often occur in places where tubes are soldered or in the foamed part of the housing due to corrosion. It is difficult to notice this visually, but you can pay attention to the swelling of the rear wall inside the chamber or the appearance of oily spots under the unit. Oil leaves the system along with the gas, which is a sure sign of depressurization.
Long-term operation of the compressor at low freon levels is extremely dangerous. The motor is cooled by the gas passing through it, and when there is a shortage of gas, a critical failure occurs. This can lead to an interturn short circuit and the need to replace the compressor itself. overheating of the windings. This can lead to an interturn short circuit and the need to replace the compressor itself.
- 🔍 Inspect the soldering areas of the copper tubes for traces of oil.
- ❄️ Check the uniformity of cooling of the evaporator (it should get completely cold).
- 🔊 Listen to the sounds: gurgling may indicate a lack of gas.
Problems with door seals and heat exchange
The constant operation of equipment can be caused by the banal penetration of warm air from the outside. If rubber seal doors Indesit are worn out, dirty or deformed, the seal of the chamber is broken. Warm air constantly flows inside, sensors record the increase in temperature and do not give a command to turn off.
It is also worth checking the door hinge. Over time, the hinges may weaken, and the door will not fit tightly, even if visually this is not noticeable. Door misalignment is a common reason that is easy to overlook during the initial inspection.
Another factor is the location of the refrigerator. If it stands close to a wall or furniture, the air circulation around the condenser (grids at the back) is disrupted. Heat exchange deteriorates, the gas does not have time to condense, and the pressure in the system increases, forcing the compressor to work without stopping.
☑️ Diagnostics seal
Clogged capillary tube or filter drier
A mechanical obstruction may occur in the refrigerant circulation system. Capillary tube, which has a very small diameter, is often clogged with wear products compressor or moisture that has turned into ice. The filter drier also loses its properties and creates resistance to the flow of freon.
When clogged, the compressor works “at a dead end”, trying to push gas through the plug. This is accompanied by a characteristic sound: the motor hums, but there is no circulation, and the condenser can be hot only at the beginning or, conversely, cold. Pressure the system becomes abnormal, which blocks the normal cycle.
To eliminate this malfunction, professional intervention is required: purging the system with nitrogen, replacing filter and refilling the refrigerator Indesit with new freon. It is impossible to carry out this work independently without a vacuum pump and a pressure gauge station.
Faults in the start relay and compressor
Sometimes the problem lies in the very “heart” of the refrigerator. Start relay is the device that starts the motor. If its contacts are burnt or the mechanism is jammed, the compressor may hum, but not start, or work intermittently, without turning off at the command of the electronics.
The worst diagnosis is compressor wear. Over time, the piston group wears out, compression drops, and the engine physically cannot pump up the necessary pressure to stop. It works constantly, trying to compensate for its weakness, but the cooling efficiency tends to zero.
| Symptom | Probable cause | Nature of motor operation |
|---|---|---|
| It hums, but does not cool | Freon leak / Clogged | Works continuously, hot |
| Clicks and buzzes | Faulty start relay | Trying to start jerkily |
| It makes a lot of noise and vibrates | Wear of the compressor suspension | Works without interruption |
| It cools, but does not turn off | Thermostat / Leakage | Smooth hum, overheating |
The influence of the fast freezing mode and settings
Before sounding the alarm, check whether your Indesit mode is activated (Super Freeze). In this mode, the refrigerator is forced to operate without stopping for a long time in order to quickly freeze a large volume of food. Usually this mode turns off automatically after 24-48 hours, but the button could be stuck or an electronics failure prevents the system from exiting this state. "Super Freeze" (Super Freeze). In this mode, the refrigerator is forced to operate without stopping for a long time in order to quickly freeze a large volume of food. Usually this mode turns off automatically after 24-48 hours, but the button could be stuck or an electronic failure prevents the system from exiting this state.
It is also worth paying attention to the set temperature. If you set the minimum values (for example, -24°C in the freezer) in a hot room, the refrigerator will work almost constantly, since the heat loss is high and the target temperature is very low. Normalizing the settings often solves the problem.
⚠️ Attention: Long-term activation of the super-freeze mode on a working one refrigerator during normal operation can lead to freezing of food and unnecessary consumption of electricity. Check the control panel.
In models with electronic control (Indesit Smart and analogues), a software failure of the controller is possible. In this case, the full help reboot: unplug the device for 15-20 minutes, and then turn it on again. This will reset the control logic errors.
When you need to call a technician
If simple methods like checking the seal, defrosting and resetting settings did not help, we are talking about a serious technical malfunction. DIY Repair in cases of freon leakage or replacing the compressor is not only complicated, but also dangerous without special equipment and skills.
The technician will conduct diagnostics using a leak detector, check the compression and circuit tightness. Only a professional will be able to accurately determine whether it is worth repairing the old one Indesit or whether it is more economically feasible to purchase new equipment, taking into account the cost of spare parts and labor.
Do not delay calling a specialist if you notice that the engine has become very hot or there is a smell of burnt wiring. Timely handling will save your budget and products.
Is it possible to operate the refrigerator if it does not turn off?
Short-term - yes, but this is emergency mode. Long-term operation without stopping (more than a day) leads to overheating of the compressor, deformation of parts and other failure. The risk of fire or complete destruction of the unit is high.
How long should an Indesit refrigerator normally work?
The normal operating cycle is approximately 15-20 minutes of work and 20-30 minutes of rest. The working time factor (WFC) should not exceed 50%. If the refrigerator works for 40 minutes, but stays on for 10, this is already a cause for concern.
Why does the refrigerator not turn off for a long time after defrosting?
After complete defrosting, the chambers take time (up to 2-3 hours) to reach the operating temperature mode. During this time, the compressor can operate continuously. If after 3-4 hours it does not turn off, look for a malfunction.
Does hot weather affect the operation of the refrigerator?
Yes, in a hot room the heat transfer of the condenser worsens. The refrigerator will run longer and more often to compensate for heat gain. However, it should still turn off periodically. If the room is +30°C, the operating time will increase, but the cyclicity should remain.
What to do if the compressor relay clicks, but there is no start?
This is a sign of a malfunction of the start relay or the compressor itself (jamming). It is necessary to disconnect the device from the network. You can try to carefully replace the relay yourself (if you have the skill), but it is better to call a technician to check the compressor.