The situation when in the freezer compartment of the refrigerator Indesit products turn to stone, and room temperature reigns in the upper compartment temperature is one of the most common complaints from owners of this equipment. Many users mistakenly believe that if the compressor is humming and the freezer is doing its job, then the problem lies solely in the settings or a minor malfunction of the thermostat. However, in reality, such asymmetry of temperature conditions most often indicates serious disturbances in the operation of the system refrigerant circulation or a failure in the control algorithms.
Refrigerators Indesit, especially models with the system No Frost or “crying” evaporator, are designed so that cold is generated in one place (often in the freezer compartment) and then distributed throughout the entire volume. If cold air stops flowing into the main chamber or stops being produced in sufficient quantities for both compartments, we see the picture described. Ignoring the problem at an early stage can lead to complete defrosting of food in the refrigerator compartment and damage to equipment.
In this article we will analyze in detail the mechanical and electrical causes of the malfunction, explain how to carry out initial diagnostics without calling a technician, and determine in which cases it is possible do-it-yourself repairand when professional intervention using special tools is required. Understanding the principles of operation of your model will help you avoid unnecessary costs.
Principles of cold distribution in Indesit refrigerators
To understand why the temperature balance is disrupted, you need to briefly consider the design of your unit. Most modern models Indesit use one compressor, which pumps refrigerant into the evaporator, which is usually located in the freezer area. This is where the main heat exchange occurs. Next, the cold air either naturally falls down (in static models) or is forced by a fan (in systems No Frost and Frost Free).
If the freezer is working properly, this means that the compressor turns on, freon circulates and cools the evaporator. The problem is localized precisely at the stage of transferring this cold to the upper compartment. In models with Full No Frost The fan and damper system are responsible for the distribution. If the fan has stopped or the air ducts are blocked by an ice plug, the cold will remain below. In drip systems (“crying back”), the cold is transmitted through the wall and natural convection, and here a violation of the air circulation inside the cabinet or a freon leak plays a key role.
It is important to distinguish between models, since diagnostics for Indesit C 132 (classic drip system) and Indesit DF 520 (No Frost) it will be different. In the first case, a leak or a clogged capillary is most often to blame, in the second case, problems with defrosting the evaporator or fan. Incorrect diagnosis will lead to the purchase of unnecessary spare parts.
Leakage freon: the most likely reason
Statistics from service centers indicate that in 70-80% of cases when the freezer is freezing and the refrigerator is warm, this is because when the amount of freon in the system decreases, there is not enough of it for the full cooling cycle of both compartments. The compressor is working hard, trying to increase the temperature, but The gas resource is only enough for the very first section of the evaporator - the freezer. refrigerant leak. This happens because when the amount of freon in the system decreases, it is not enough for a full cooling cycle of both compartments. The compressor is working hard, trying to gain temperature, but the gas resource is only enough for the very first section of the evaporator - the freezer.
The leak can be microscopic and occur for years until the amount of gas drops below a critical level. Often the cause is corrosion of the metal pipeline sealed into the wall of the refrigerator (especially in models with aluminum evaporators), or mechanical damage during the process. defrosting with a sharp object. In some cases, freon escapes through soldering points or through shut-off valves shut-off and adjustable valves.
⚠️ Attention: If you notice that the refrigerator began to work longer than usual, and then stopped turning off altogether, while there is heat in the refrigerator compartment, this is a classic sign of a leak. Find the leak yourself without a leak detector and pressure gauges. impossible.
Leakage symptoms develop gradually. At first, you may notice that the food in the refrigerator begins to deteriorate faster, then condensation stops appearing on the back wall (in drip models), eventually the ambient temperature is established in the chamber, while in the freezer it is still below zero, but not as deep as before. The compressor may be hot to the touch, since it operates without. break.
Repair in the event of a leak requires a qualified approach. The technician must find the location of the damage, repair it, evacuate the system and fill the exact amount of freon indicated in the model passport. Using the wrong refrigerant or violating the charging technology will lead to failure of the compressor.
Is it possible to refill the refrigerator yourself?
Independent refilling with freon is highly not recommended. This requires specialized equipment (scales, vacuum pump, pressure gauge station) and skills in working with gas under pressure. An error in dosage or the presence of moisture in the system will lead to capillary blockage and costly repair of the compressor.
Problems with the defrost system (No Frost)
In refrigerators Indesit with a system No Frost a frequent reason for the lack of cold in the upper compartment when the freezer is running is a malfunction of the evaporator defrost system. The essence of the problem is as follows: on the evaporator, which is hidden behind the plastic panel in the freezer, a “coat” of ice builds up. This ice blocks the operation of the fan, which should drive cold air. air into the refrigerator compartment.
As a result, the fan either stops due to icing of the blades, or the air simply cannot pass through the ice blockage in the air ducts. The freezer continues to freeze, since the cold is generated directly in it, but you may not even hear the noise of the fan in the upper section, since it can be blocked by ice or burn out. data-i="86">Three main elements are responsible for the defrosting process:
Three main elements are responsible for the defrosting process: Defrost heating element (heating element), defrost sensor (thermostat) and defrost timer (or electronic control module). If the heating element is burned out, the ice does not melt. If the sensor “lies” and does not give a command to turn on the heating element, the same thing happens. If the timer is stuck. in cooling mode, defrosting will never start.
Diagnosis of this malfunction often requires partial disassembly of the freezer to access the evaporator. a thick layer of ice or frost on the back wall of the freezer if you remove the plastic panel. Also a sign may be a whistling or crackling sound of the fan trying to break through the ice.
☑️ Diagnostics of the No Frost system
Faulty damper and fan
In models with electronic control and system Multi Air Flow or No Frost a special damper (damper) is responsible for supplying air to the refrigeration compartment. This is a mechanical shutter with an electric drive, which opens at the command of the control module when the temperature in the chamber rises above the set one.
If the damper is stuck in the closed position or burned out. drive motor, cold air physically cannot enter the refrigeration compartment. In this case, the freezer operates in normal mode, perhaps even freezing food more than usual, since all the cold remains below. You can check the condition of the dampers by reaching the air ducts, usually located in the upper part of the refrigerator compartment or between the compartments.
The fan is another critical unit, in contrast to the defrost system. the fan is located at the evaporator; some models may have additional circulation fans. If it is faulty, convection is disrupted. You can check it by listening to the operation of the refrigerator: if there is no characteristic air noise, and the freezer is freezing, perhaps the fan simply does not start.
It is interesting that sometimes the problem lies not in a breakdown, but in a banal overload of products. If you pack the shelves too tightly and block the air outlets, circulation will naturally be disrupted. In such cases, it is quite simple unload the refrigerator to ensure free flow of air.
Clogging of the capillary tube
A less common but possible reason is the formation of an ice plug in the capillary tube or clogging of its technical debris (oil oxidation products, dirt). This often happens if there was moisture in the system, which froze at a low temperature in the narrowest point of the circuit.
When clogged, the circulation of freon is disrupted. The compressor works, trying to push gas, gurgling or whistling is heard, but the cooling capacity drops. This is often accompanied by the fact that the condenser (grid at the back) heats up unevenly: it is hot only up to a certain point, and then cold. This indicates that freon does not reach the end of the circuit.
| Symptom | Probable cause | Nature of compressor operation |
|---|---|---|
| It is cold in the freezer, warm in the refrigerator | Freon leak | Works without stopping, hot |
| Frost only at the entrance to the evaporator | Clogged capillary | Works with overload, may buzz |
| Ice on the back wall of the freezer | Defrost malfunction (No Frost) | Works cyclically, as usual |
| Fan noise or lack of it | Fan failure | Works normally |
Removing the blockage requires purging the system with nitrogen, replacing the filter-drier and refilling with freon. This is a complex procedure that requires professional equipment and skills in soldering copper pipes.
Failure of the electronic control module
Modern refrigerators Indesit are controlled electronically. If the main control module or display module fails, it may not correctly read the temperature sensors. For example, the module “thinks” that it is already quite cold in the refrigerator compartment and does not give a command to cool, although in fact it is warm there.
Failures in the operation of temperature sensors (thermistors) are also possible. If the sensor in the refrigerator compartment shows incorrect data (for example, -5°C instead of +5°C), the control module will not start the compressor or close the damper. Replacing the sensor is a relatively simple procedure, but requires accurate diagnostics with a multimeter.
Sometimes the problem is solved by rebooting the “brains” of the refrigerator. To do this, just disconnect the device from the network for 15-20 minutes. If after turning on the problem disappears, then a software failure has occurred. If the situation repeats after a day, the sensor needs to be replaced or the board repaired.
⚠️ Attention: Before replacing any electronic components, make sure that the refrigerator is completely disconnected from the power supply. Residual voltage on the capacitors can be dangerous, and careless handling of the board will lead to its complete burnout.
Mechanical damage and wear of seals
Trivial reasons related to thermal insulation cannot be discounted. If the sealing rubber on the door of the refrigerator compartment is worn out, dirty or deformed, warm air from the room constantly enters the chamber. The compressor (or air supply system) cannot cope with compensating for this heat, and the temperature inside rises.
You can check the seal with a simple test with a sheet of paper. Clamp the sheet with the door around the perimeter. If it pulls out too easily without resistance, it means the seal is broken. Also inspect the door for distortions: if the door is distorted, it will not fit tightly even with a new seal.
Frequent opening of the door, especially in the hot season, also leads to the described effect. The refrigerator simply does not have time to restore the temperature. In this case, technical repairs are not required, it is enough to change your operating habits.
When you need to call a technician
You can independently check the tightness of the door, defrost the refrigerator (if you suspect an ice plug in No Frost) and check the settings. However, if we are talking about filling with freon, replacing the compressor, soldering pipes or complex diagnostics of electronics, you cannot do without a specialist.
Attempts on your own Opening the cooling system often ends in the final breakdown of the equipment. Freon under pressure, the need for evacuation and precise dosage of oil and refrigerant are tasks for licensed professionals. In addition, improper repairs can be a fire hazard.
If, after complete defrosting (at least 24 hours with the doors open), the problem with the temperature in the refrigerator compartment returns within 24 hours, this is a 100% technical malfunction that requires specialist intervention.
Why does the refrigerator work normally after defrosting, but a day later it stops working again? freeze?
This is a classic sign of problems with the defrosting system in No Frost models or the initial stage of blockage. During defrosting, you manually remove the ice blockage that was preventing circulation. But since the cause (faulty heating element, timer or moisture in the system) is not eliminated, the ice builds up again in 12-24 hours, and the cycle repeats.
Is it possible to operate the refrigerator if the freezer is freezing, but it is warm in the refrigerator?
In the short term - yes, the food in the freezer will not spoil. However, ignoring the problem for a long time is dangerous. If the cause is a leak, the compressor will work hard, trying to gain temperature, which will lead to overheating and burning of the windings. Repairing a compressor costs much more than eliminating a leak.
How much does it cost to repair such a fault?
The cost depends on the cause. Refilling with freon and finding leaks usually costs more than replacing the sensor or heating element. Also, the price varies depending on the refrigerator model and region. The exact amount can only be announced after diagnosis by a technician on site.
How to extend the life of a compressor with such symptoms?
If you cannot call a technician right now, try to minimize the opening of the doors. You can temporarily reduce the load on the system by setting the temperature in the refrigerator compartment to the maximum (for example, +7...+8°C) so that the compressor turns on less often, although this is risky for the food. The best solution is (as soon as possible) to contact the service.