The Indesit refrigerator does not turn off: causes and repairs

The situation when Indesit refrigerator does not turn off and buzzes around the clock is familiar to many owners of this equipment. The constant operation of the motor-compressor not only leads to an increase in electricity bills, but also creates excess noise in the room. Moreover, long-term work without rest breaks can be a harbinger of a serious breakdown of the unit, requiring expensive intervention from specialists.

The main task of any refrigeration equipment is to maintain the set temperature inside the chambers. When the goal is achieved, thermostat should give a signal to turn off the compressor. If this does not happen, it means that there is a failure in the control circuit or in the cooling system itself. Understanding the nature of this malfunction will help you make the right decision: call a technician or try to fix the problem yourself.

In this article we will look in detail at why Indesit refrigerator stopped turning off, what symptoms indicate specific breakdowns and how to carry out initial diagnostics. It is important not to ignore the first signs of malfunction, since working “to wear” significantly reduces the life of expensive components.

The influence of the external environment and operating conditions

Before sounding the alarm and looking for internal breakdowns, it is necessary to analyze external factors. Often the reason that The refrigerator does not turn offlies not in the technology, but in the conditions of its placement. High temperature in the room causes the unit to work harder, trying to compensate for heat inflows.

This is especially true in the summer or if the equipment is installed next to heat sources, such as radiators or gas stoves. In such conditions compressor simply does not have time to cool the chambers to the required temperature during a standard operating cycle.

⚠️ Attention: If you installed the refrigerator in a niche or close to the wall, make sure that the gap for ventilation is at least 5-7 cm. Impaired heat transfer of the condenser is a common cause of continuous work.

It is also worth checking the tightness of the door. If sealing rubber is worn out or dirty, warm air constantly penetrates inside. Sensors detect an increase in temperature and prevent the system from going into standby mode. Check whether a foreign object is preventing the chamber from closing tightly.

Another factor is the loading of the chambers. If you put a lot of warm food inside, the refrigerator will take a long time to cool it down. During this period, continuous operation is a normal mode, and not a breakdown.

Malfunctions of the thermostat and sensors

One ​​of the most common reasons why Indesit refrigerator buzzing without interruption is the failure of the thermostat (thermostat). This unit is responsible for monitoring the temperature inside the chamber and sending commands to turn the compressor on or off.

If the thermostat contacts are “stuck” in the closed position, the signal to turn off the motor simply does not come. In models with electronic control, the control module is responsible for this function. If a sensor breaks down, it may transmit incorrect data that the chamber is too warm, forcing the unit to work continuously. temperature sensor and a control module. If damaged, the sensor may transmit incorrect data that the chamber is too warm, causing the unit to operate continuously.

• 🔧 Symptoms: The refrigerator freezes too much, a “coat” of ice forms on the walls, the compressor is hot and does not stop.
• ❄️ Check: In mechanical models, you can try to unscrew the thermostat knob and check the contacts with a conductivity tester.
• 💡 Electronics: In No Frost models, it is often necessary to replace the air sensor, which is located inside the chamber and not on the body.

Replacing the thermostat is a procedure that you can do yourself if you have basic skills. However, in refrigerators with a system No Frost access to the sensors may be difficult due to the need to disassemble the evaporator.

Refrigerant leak and problems with the compressor

If the refrigerator runs constantly, but there is not enough cold inside, this may indicate a freon leak. The refrigerant circulates through the system, picking up heat. When its quantity decreases, the cooling efficiency drops, and the equipment tries to compensate for this by endless operation of the motor.

Leaks often occur in places where pipes are soldered or due to corrosion of the evaporator. It is difficult to determine this visually, but an indirect sign is a hot condenser (grid at the back) only halfway or the absence of characteristic gurgling in the tubes during operation.

The compressor can also be the cause of the problem. If its motor life is exhausted, it may hum, but not create sufficient pressure in the system. As a result the unit does not turn offtrying to achieve specified parameters that it physically cannot provide.

In case of a leak or breakdown of the compressor, a call to the technician is required. It is impossible to fill the system with freon on your own or replace a sealed motor-compressor without special equipment.

Problems of the defrost system in No Frost models

B refrigerators Indesit No Frost the reason for continuous operation is often a malfunction of the defrost system. If an ice “coat” builds up on the evaporator hidden behind the back wall of the freezer, it blocks the circulation of cold air.

The fan circulates air, but because of the ice it does not enter the chambers. Sensors detect high temperatures and prevent the compressor from stopping. The main culprits here: Defrost heating element, defrost timer or fuse.

To check, you need to defrost the refrigerator completely (minimum 24 hours). If after switching on it works normally, but after a week the situation repeats itself, the problem is in the automatic defrost. Ice will block the air channels again.

Often in such models the defrost sensor fails. It may “think” that the evaporator is already warm and does not turn on the heating element, or vice versa - does not allow the cooling cycle to start.

Clogged capillary tube

A less common, but possible cause is a clogged capillary tube. Oil and freon circulate in the system. Over time, oil oxidation products or moisture can form a plug that prevents the flow of refrigerant.

When clogged refrigerator compressor works with increased load, trying to push gas through the obstacle. The pressure at the compressor outlet increases, but there is no cold in the evaporator. This is a dangerous operating mode that can quickly lead to a motor jam.

The symptom is often uneven heating of the condenser grid: one part may be hot, the other cold. There may also be swelling of the side walls of the refrigerator in the area where the pipelines are laid.

⚠️ Attention: Attempts to clean the capillary tube on your own without a vacuum pump and nitrogen often lead to complete failure of the system. Professional blowing and replacement of the filter drier are required.

Errors in placement and care

Sometimes the answer to the question “why the refrigerator does not turn off” lies on the surface. Check to see if the Super Freeze function is turned on (the button with a snowflake or the inscription Super). In this mode, the equipment works non-stop for up to 24-48 hours.

It is also worth paying attention to the cleanliness of the condenser. Dust and pet hair clinging to the black grille at the back or bottom of the refrigerator acts as a heat insulator. Heat is not dissipated, efficiency decreases, and the motor runs longer.

Regular cleaning behind the refrigerator is an easy way to extend the life of the unit. It is enough to vacuum the back wall once every six months or gently wash the grille with warm water (after unplugging the device from the mains).

Frequently asked questions (FAQ)