The situation when a refrigerator Indesit with a system No Frost stops cooling the upper compartment often takes you by surprise. At the same time, a normal temperature may be maintained in the lower chamber, which confuses the owner who is accustomed to the uniform operation of the equipment. The basic principle of operation of such models is the forced circulation of cold air, which is generated in the evaporator and forced by a fan into the refrigerator compartment through special channels.
If this process is disrupted, the products at the top begin to deteriorate, condensation or an ice crust appears, although the compressor continues to hum. In 80% of cases, the problem lies in the condensate drainage system or fan operation, and not in a freon leak. Understanding the design of your model Indesit will help you locate the fault faster.
It is important not to ignore the first signs of a failure, since prolonged operation in emergency mode can lead to overheating of the compressor. Next, we will analyze in detail the mechanical and electrical reasons why the cold stops flowing to the upper zone.
Main signs of a malfunction of the cooling system
Before disassembling the equipment, it is necessary to clearly identify the symptoms. Users often confuse the “rest” mode of the compressor with a breakdown, but in the case of a compressor there are specific markers. If you notice that the temperature in the refrigerator compartment has risen above +10°C, and water has appeared on the shelves, this is a direct signal of a circulation problem. No Frost there are specific markers. If you notice that the temperature in the refrigerator compartment has risen above +10°C and water appears on the shelves, this is a direct signal of a circulation problem.
Pay attention to the operation of the motor. When in good condition, it turns on and off cyclically. If the unit hums continuously, without turning off for hours, but there is no cold, this indicates that the system is trying to compensate for the lack of refrigerant or poor heat transfer. Also an alarming bell is the absence of the characteristic noise of a working fan inside the chamber.
⚠️ Attention: If a “coat” of ice or snow has formed on the back wall of the upper chamber, this indicates that moisture does not have time to be removed and freezes in the air supply channel, blocking it.
Another important indicator is condition of products. Meat and fish in the upper compartment become soft, dairy products quickly sour, while in the freezer everything is frozen solid. This is a classic picture for models Indesitwhere the problem is localized in the air ducts.
Mechanical blockages: ice and clogged ducts
The most common reason why the upper chamber does not freeze is banal freezing of the air ducts. In the system No Frost cold air is supplied from the freezer through openings located on the rear wall of the refrigerator compartment. Over time, these channels can become clogged with ice if the automatic defrost system fails.
An ice plug forms when the defrost heating elements do not warm up the evaporator in a timely manner, or when the drain hole is clogged with debris. Water from melting snow does not go into the tray, but freezes in a narrow channel, turning into a dead plug. The air stops circulating, and the temperature in the upper compartment rises.
To eliminate this problem, it is often enough to completely defrost the refrigerator. Leave Indesit unplugged for 24 hours with doors open. This will allow ice in hard-to-reach places to completely melt and exit through the drainage.
Why does ice return after 2-3 weeks?
If after defrosting the problem repeats after a short time, it means that one of the elements of the defrosting system is faulty: heating element, temperature sensor or timer. Simply defrosting will not solve this; the part will need to be replaced.
After defrosting, check the drainage hole. It is located at the bottom of the rear wall of the refrigerator compartment. Clean it with a soft tube or a cotton swab to make sure that water flows freely.
Problems with the evaporator fan
The heart of the system No Frost is the fan that drives cold air through the chambers. If it stops, circulation stops and the cold remains only in the freezer where the evaporator is located. In models Indesit the fan is often located behind the rear panel of the freezer.
The reasons for the stop may vary. Mechanical blocking of blades by ice is a common occurrence. Also, the engine bearings may wear out, producing a characteristic hum or crackling noise before stopping completely. You can check the operation of the fan by opening the refrigerator door (on many models it should go silent when the door is opened) and listening to changes in the sound of the unit.
If the fan does not spin, but hums, the motor may be jammed. If there is complete silence, it is worth checking the electrical circuit. Sometimes the problem is solved by lubricating or replacing the fan, which is a standard repair procedure.
Malfunctions of the defrost system (Defrost)
The defrost system is a set of parts responsible for periodically defrosting the evaporator. It includes a heating element (heater), a defrost thermostat (temperature sensor) and a fuse. If any of these elements fails, the evaporator becomes overgrown with ice, blocking the air supply.
The defrost heating element Indesit can burn out due to power surges or natural wear. The thermostat, in turn, may “stick” in the open state, not giving a command to turn on the heating. Without regular defrosting, the evaporator turns into an ice monolith in 1-2 weeks.
Diagnostics of these elements requires a multimeter. It is necessary to “ring” the circuit for a break. Often it is the fuse that fails, which burns out when the heating element overheats, breaking the circuit forever. Replacing it takes a few minutes, but finding the original can be difficult, you have to select analogues.
⚠️ Attention: Do not try to remove ice from the evaporator with sharp objects! Damage to the evaporator tubes or heating element will lead to freon leakage and costly repairs.
Refrigerant leakage and problems with the compressor
Although problems with air circulation are more typical for the system No Frost it is not possible exclude freon leakage. If the refrigerant becomes low, the compressor works hard, trying to gain temperature, but there is not enough cold even for the freezer, not to mention the upper chamber.
Signs of a leak: the compressor is hot and works without stopping, the condenser grill at the back of the refrigerator is cold or only partially warm (at the beginning of the circuit). In such cases, independent repair is impossible; you need to call a technician to look for leaks, solder and refill.
It is also worth mentioning the interturn short circuit in the compressor windings. The engine hums, but cannot start or operates with very low performance. This is a critical breakdown that requires replacing the compressor.
☑️ Diagnostics before calling a technician
Table: Comparison of symptoms and probable causes
To quickly navigate the problem, use the summary table. It will help weed out unlikely options and focus on the main thing.
| Symptom | Probable cause | Difficulty of repair | Necessary actions |
|---|---|---|---|
| Warm above, below freezing | Air duct clogged with ice | Low | Full defrosting (24 hours) |
| Noise/crackling, no cold | Fault fan | Average | Fan replacement |
| Ice coat on the wall | Failure of the defrost system (heating element, sensor) | Average | Replacing defrost elements |
| The compressor does not turn off | Freon leakage | High | Searching for leaks and refilling |
| Water on the floor under the refrigerator | Clogged drain hole | Low | Cleaning the drain |
Prevention and proper care of Indesit
In order for your Indesit to serve for a long time, it is important to follow the operating rules. Do not place hot food in the chamber - this creates excess humidity that the system No Frost may not be able to cope with, leading to ice formation. Also, make sure that the door seals tightly: if the seal is worn out, warm, moist air constantly enters the chamber.
Carry out preventive defrosting regularly, at least once a year, even if there is no visible ice. This will help clean the system of unnoticeable build-up and extend the life of the compressor. Periodically check the cleanliness of the condenser grille at the back of the refrigerator - dust impairs heat transfer.
Do not forget to check the drainage hole. Throw some water in there - it should go away quickly. If it is, clean it. This is the simplest but most effective preventive measure.
When you need to call a specialist
There are a number of situations where independent actions can only do harm. If, after a 24-hour defrosting, the refrigerator Indesit stops freezing again after a few days, then the problem is in the hardware (sensors, heating elements, control board). Here you need professional diagnostics with a multimeter.
If you hear gurgling, hissing or see oil around the compressor, these are signs of a leak in the circuit. You cannot solder tubes and refill with freon on your own without equipment and a license.
⚠️ Attention: Opening the factory seals on the compressor or interfering with the electrical circuit without the appropriate knowledge will void the warranty and can be life-threatening.
A technician is also needed if the problem is related to the electronic module management. Modern models Indesit have complex operating logic, and a failure in the “brains” of the refrigerator can simulate a breakdown of mechanical parts.
Frequently asked questions (FAQ)
How long does it take to defrost an Indesit refrigerator?
For complete and high-quality defrosting, so that the ice in the hidden channels and evaporator melts, it is recommended to keep the refrigerator turned off with open doors for at least 24 hours. The minimum time is 12 hours, but it may not be enough if there is severe freezing.
Is it possible to operate the refrigerator if the upper chamber does not freeze?
For a short time - it is possible if you have unloaded perishable foods. However, prolonged operation in this mode is harmful to the compressor, which will work without rest, trying to reach the set temperature. This can lead to its overheating and combustion.
Why does the refrigerator take a long time to get cold after defrosting?
After complete defrosting, the insides of the unit heat up to room temperature. The compressor takes time (from 2 to 6 hours) to cool the entire volume. In the first hours, do not load the chamber with products, let the equipment go into operation.
Water freezes in the upper chamber, what is the reason?
If water freezes directly on the shelves or products, most likely the thermostat adjustment is broken (the temperature is too low) or cold air blows directly on the products due to the displacement of the damper or the lack of products that serve as heat buffer.
How to check if the fan is working without disassembling?
Open the refrigerator door. In working order Indesit the fan should stop (the door switch is activated). If when you open the door, the sound of the fan does not change or you couldn’t hear it at all, it is probably not working or stopped by ice.