The situation when you open the refrigerator Indesit, you see a light bulb, but there is warmth inside, and the food begins to deteriorate, causing panic in any home cook. This is a classic symptom indicating that the electrical power circuit of the device is intact, but the cold generation system is not functioning. There is light, which means there is voltage in the outlet, and the power cord is working, but the current either does not reach the units that create the cold, or they are out of order.
In this article we will analyze in detail all the possible causes of failure, from simple settings to complex malfunctions compressor or refrigerant leaks. You will learn how to carry out initial diagnostics yourself without calling a technician, which components most often fail in models Indesit and when repairs become economically impractical. Correct and timely diagnostics can save you significant money.
Do not rush to throw away the equipment or call service right away, since in half of the cases the problem lies in small things that can be fixed on your own in 15-20 minutes. However, ignoring serious symptoms can lead to complete failure of an expensive motor-compressorrefrigerator, the replacement of which costs almost half of a new refrigerator. Let's look at the device and possible failures.
Primary diagnostics: checking simple causes
Before grabbing a multimeter or looking for a service center number, it is necessary to exclude trivial but common causes of lack of cold. Sometimes users accidentally touch the controls when changing operating modes, or forget about the recent defrost. In models Indesit with mechanical control, the thermostat is a knob with numbers, which can be easily turned to the “0” or “Off” position when loading products.
It is also worth checking whether the door is pressed by a foreign object or the food set itself, since a loose fit leads to constant running of the compressor in vain, which can ultimately overheat and switch off via thermal relay. Make sure the refrigerator is level and the door closes tightly without gaps. If you have just defrosted the unit, you may have turned it on too early, without allowing the condensation inside the system to dry.
⚠️ Attention: If you have recently defrosted, turn on the refrigerator no earlier than 4-6 hours after the end of the procedure. An attempt to start a compressor with liquid freon in the system can lead to water hammer and instant failure.
Pay attention to the room temperature. If the refrigerator is installed in an unheated room or next to heating appliances, this may interfere with operation thermostat. Also check that the ventilation gaps at the back of the case are not blocked, which is critical for removing heat from the condenser.
Malfunctions of the thermostat and temperature sensors
One of the most common reasons why Indesit stopped freezing when the lighting is on is failure thermostat (thermostat). This element is responsible for turning the compressor on and off depending on the temperature inside the chambers. If the thermostat contacts are oxidized or broken, the engine power circuit does not close and it simply does not start, although the light in the chamber is on.
In models with the system No Frost electronic sensors (thermistors) are responsible for the temperature regime, which transmit data to the control module. If one of the sensors shows incorrect values (for example, it reports that the chamber is -30°C, although it is +10°C), the “brain” of the refrigerator will not give the command to start cooling. Diagnostics of such elements requires testing the resistance with a multimeter.
Replacing the thermostat is a relatively simple procedure for mechanical models. You will need to remove the plastic cover, unscrew the thermostat housing and replace it with a similar one.
How to check the thermostat with a multimeter?
To check, remove the thermostat, immerse its sensitive tube in cold water with ice. Ring the contacts: if there is no resistance (break), and when heating, conductivity appears in your hands, the thermostat is working. If the circuit does not close even in warm conditions, the part is faulty.
In electronic models Indesit a sensor malfunction is often accompanied by blinking indicators on the control panel or the appearance of an error code. In this case, you cannot do without replacing the sensor element or reflashing the control module.
Problems with the start relay and compressor
If you hear that the refrigerator is humming, clicking, but the cold is not coming, or there is complete silence, the problem may lie in the start relay or the compressor itself. The start relay is a small box on the side of the motor that provides the impulse to start the engine. Over time, the contacts in the relay burn out, and it stops performing its function, which is why the compressor either does not start or works with a characteristic hum and quickly turns off.
Compressor is the heart of the refrigerator. If it burns out (interturn short circuit of the windings), it will no longer be possible to start it. Signs of a compressor malfunction may include: strong heating of the motor housing, lack of vibration when plugged in, and a specific burning smell. In some cases, the piston group jams, and the engine hums, but cannot turn over.
Replacing the start relay is one of the simplest operations that you can do yourself. It is enough to remove the old part (after photographing the connection diagram) and install a new one that strictly corresponds to the markings. However, if the problem is in the motor itself, a complex repair will be required with soldering tubes and vacuuming the system.
It is also worth checking the integrity of the compressor windings with a multimeter. Normal resistance between contacts should be within a certain range (usually 10 to 30 ohms). If the device shows infinity (break) or zero (short circuit), the compressor must be replaced.
Freon leak and capillary system blockage
The most unpleasant situation for the owner is a refrigerant (freon) leak. If the refrigerator Indesit stops freezing, the compressor works continuously (hums without stopping), but there is no cold, and the condenser grille at the back remains cold - this is a sure sign of a lack of freon in the system. Freon can escape through microcracks in the evaporator, which are formed due to corrosion or mechanical damage.
Another similar problem is clogged capillary tube. An ice plug or blockage with oil breakdown products may form in the freon circulation system. The symptoms are similar to a leak: the compressor works, but the cooling capacity drops to zero. In both cases, the intervention of a specialist with professional equipment is required.
It is impossible to independently find the leak or clean the capillary without a vacuum pump and a pressure gauge station. Attempts to “refuel” the refrigerator without eliminating the leak will only give a short-term effect, since the gas will escape through the crack again.
| Symptom | Probable cause | Nature of compressor operation | Condenser temperature |
|---|---|---|---|
| No cold, silence | Thermostat or relay is faulty | Won’t turn on | Cold |
| No cold, buzzing | Freon leak / Blockage | Works without stopping | Cold or partially warm |
| No cold, clicks | Starting relay burnt out | Trying to start | Cold |
| Weak cold | Compressor wear | Works constantly | Barely warm |
⚠️ Attention: Freon used in modern refrigerators can be a fire hazard (for example, isobutane R600a). Soldering and filling the system should only be carried out by a qualified specialist with the appropriate permit and equipment.
Failures in the operation of the No Frost system
In refrigerators Indesit with the system No Frost cold is generated in a separate evaporator hidden behind the rear wall of the freezer compartment, and is distributed by a fan. If the fan stops spinning, cold air does not enter the main chamber, and food there begins to spoil, although there may be ice in the freezer. The reason should be sought in a malfunction of the fan motor or icing of its blades.
A frequent problem is failure of Defrost heating element or the defrost timer. If the evaporator becomes overgrown with a “coat” of ice, the air channels are blocked and circulation stops. Visually, this can be seen if you remove the back panel in the freezer: you will see an ice monolith instead of a clean radiator.
To check the heating element, you need to ring it with a multimeter. If the spiral is broken, the heater will not melt the ice and the system will go into emergency mode. Replacing the heating element requires complete defrosting of the refrigerator (at least 24 hours) and disassembling the internal unit.
☑️ Diagnostics No Frost
It is also worth checking the defrost sensor, which gives the command to turn on the heating element. If it “lies,” heating will not begin, and ice will accumulate until the system is completely blocked.
When you need to call a technician: assessing the feasibility
When deciding whether to repair the refrigerator Indesit on your own or call a specialist, it is important to soberly assess your skills and the cost of spare parts. Replacing a thermostat, start relay or fan is within the capabilities of a home DIYer with a basic set of tools. However, work related to the violation of the tightness of the circuit (replacing the compressor, eliminating leaks, refilling with freon) requires expensive equipment and a license.
If the diagnostics showed that the compressor burned out, calculate the cost of the new part and the work of the technician. Often this amount is 60-70% of the price of a new refrigerator. In such cases, buying new equipment may be a more rational decision, especially if your unit is already more than 10 years old.
Do not forget that a professional technician provides a guarantee on the work performed and the spare parts used, which cannot be said about self-repair. In addition, a specialist can conduct a full diagnosis and identify hidden defects that are not visible during a superficial inspection.
Always weigh the risks: incorrect self-filling or Soldering may result in a refrigerant explosion or fire. Safety should be a priority.
Prevention and proper care of the refrigerator
To avoid situations when the refrigerator Indesit stops freezing, it is necessary to regularly carry out preventive maintenance. First of all, this is timely defrosting (even for No Frost systems it is recommended to defrost the unit 1-2 times a year for hygiene and checking the seals). A dirty condenser on the back of the refrigerator is a common cause of overheating and compressor failure, so wipe the grill from dust at least once every six months.
Monitor the condition of the rubber door seal. If it is dry or dirty, the door will not close tightly, which will lead to constant operation of the compressor and its premature wear. Wipe the seal with a soft cloth and check its fit with a simple test with a sheet of paper.
Do not overload the refrigerated shelves and do not place hot foods inside. This places excess load on the cooling system. Also avoid frequent power surges - use a surge protector or stabilizer, since surges in electricity often cause combustion of electronics and motor windings.
⚠️ Attention: Do not install the refrigerator close to the wall. A minimum gap of 5-10 cm is necessary for free air circulation around the condenser. Violation of this rule leads to overheating and shortened service life.
Regular washing of the internal chambers and drainage hole will help avoid the appearance of mold and unpleasant odors, and will also ensure correct removal of moisture in systems with drip defrosting.
Questions and answers (FAQ)
Why a refrigerator hums, but does not freeze, and turns off after a while?
Most likely, the problem is in the compressor start relay. It tries to start the engine, there is a clicking and buzzing sound, but the protection turns off the engine because the start does not occur. Less commonly, the cause is a jammed compressor.
Is it possible to operate the refrigerator if it has stopped freezing, but the light is on?
For a short period of time - yes, but you cannot store food in it. Prolonged operation of a faulty compressor (for example, due to a freon leak) can lead to its complete combustion. It is better to turn off the device until the reasons are determined.
How long should the refrigerator cool down after defrosting before turning it on?
The optimal waiting time is from 4 to 8 hours. This is necessary so that all condensate from the electrical circuits and the compressor evaporates, and the oil in the system returns to the engine crankcase.
How to understand that there is a freon leak in the refrigerator?
Main signs: the compressor runs continuously without turning off; the rear grille (condenser) remains cold or warm only at the compressor outlet; It’s warm inside the chambers, the evaporator is clean (no frost).
Will the technician replace the thermostat at home?
Yes, replacing a mechanical thermostat or start relay is done on site and takes about 30-60 minutes. Repairs related to the freon circulation system are also often carried out at home, since mobile workshops have the necessary equipment.