The situation when food in the freezer freezes to stone, and the refrigerator compartment is stuffy and food spoils, is one of the most common problems among equipment owners Indesit. Many users mistakenly believe that if the compressor is humming and the freezer is working, then everything is fine with the unit and you just need to wait. However, this is a classic symptom of a serious disturbance in the refrigerant circulation system or a malfunction in temperature control.
In modern models, especially with the system No Frost, cold is forced into the upper chamber, and in older models with a drip system it comes naturally. In both cases, temperature imbalance indicates that the cooling cycle is broken. Understanding the physical processes occurring inside the housing will help you quickly diagnose the problem and avoid unnecessary expenses on products.
Before calling a technician, it is worth conducting an initial diagnosis to rule out trivial causes, such as a loose door or incorrect thermostat settings. However, if you notice that the back wall in the refrigerator compartment is dry and warm, and the (evaporator) in the freezer is covered with ice, this is a technical malfunction that requires intervention.
The operating principle of Indesit two-chamber refrigerators
To understand why a temperature imbalance occurs, it is necessary to briefly consider the design of the unit. Most models Indesit use one compressor that pumps freon in a closed circuit. First, the refrigerant passes through the freezer, where it releases the main cold, and then enters the refrigeration circuit. If a failure or leak occurs at the first stage, the freon simply does not reach the second compartment or arrives already warm.
In systems No Frost the situation is complicated by the presence of a fan and air dampers. Cold air is produced in the freezer and supplied through special channels to the refrigeration compartment. Temperature regulation occurs by opening and closing an electronically controlled air damper. If this mechanism is jammed in the closed position, cold air stops flowing, although the evaporator in the freezer continues to work properly.
It is important to distinguish between moisture removal systems, as this affects the nature of the breakdown. In drip models (“crying wall”), condensation flows down the back panel, and if it does not cool, it means that freon is not circulating through this section of the tubes. In models Total No Frost the problem often lies in freezing of the ducts or a breakdown of the fan, which is supposed to drive air between the chambers.
Freon leakage as the main cause of the malfunction
The most likely reason that the freezer freezes and the refrigerator does not cool is partial refrigerant leak. Freon is a working fluid that transfers heat. When its quantity in the system decreases due to microcracks in the circuit or corrosion of the tubes, the pressure is not enough to drive the gas through the entire circuit. As a result, freon only manages to cool the first area - the freezer, but it simply does not reach the refrigeration compartment.
Often a leak occurs in the foamed part of the body or in solder areas, where rust forms over time. It is impossible to notice this visually, since the gas evaporates gradually. The first sign is exactly the symptom described: in the freezer the temperature may be normal or slightly above normal, and in the refrigerator it may be warm. Over time, as the amount of freon decreases, the freezer will also stop cooling.
You can indirectly diagnose a leak at home. If you defrosted the refrigerator, let it stand, turned it on, and it started working normally, but after a week or two the situation repeated itself, this is an almost guaranteed leak. It is impossible to fix this problem on your own, since it requires searching for the location of the damage, soldering and refilling the system.
Why can’t you ignore a freon leak?
Operating a compressor with insufficient refrigerant leads to its overheating. The motor tries to compensate for the lack of pressure by working longer, which can ultimately lead to burning of the compressor windings and expensive repairs.
⚠️ Attention: If you notice a specific chemical smell in the area of the refrigerator, immediately ventilate the room. Although modern freons are often odorless, oil impurities or products of insulation combustion during overheating can signal a serious problem.
Compressor malfunction and loss of performance
The compressor is the heart of the refrigerator Indesit. If its mechanical part is worn out, it may hum and even start, but not create the necessary pressure to pump freon throughout the system. This condition is often called “compressor not holding pressure.” In this case, the gas circulates only in a small circle (to the freezer) or its flow is so weak that it does not have time to cool a large volume of the refrigeration chamber.
You can determine a compressor malfunction by its temperature and operating mode. If the motor runs continuously without turning off, but it gets very hot (up to 80-90 degrees), and there is no cold in the main chamber, this is an alarming signal. It is also worth listening to sounds: knocking, clanging or intermittent humming may indicate mechanical destruction of internal components.
In some cases, the problem lies not in the compressor itself, but in the start relay. If the relay is stuck or not working correctly, the compressor may not start at full capacity or may shut down frequently. However, if the relay breaks down, most often the refrigerator does not turn on at all or turns on for a few seconds and clicks.
Clogged capillary tube and filter drier
Another technical reason for temperature imbalance is clogging of the capillary tube. This is the thinnest copper tube in which freon sharply expands and cools. If moisture gets into the system, it turns into an ice plug, or oil oxidation products get there, the patency of the tube is disrupted. Freon cannot circulate freely, creating a plug in front of the blockage.
The symptoms of a blockage are very similar to a leak: the freezer is working, the refrigerator is warm. However, there is a difference: when clogged, the compressor often works overload, and the condenser (grid at the back) may only be partially hot. Sometimes, during defrosting, the ice plug melts and the refrigerator begins to work normally for a short time, after which the problem returns.
To eliminate this problem, it is necessary to flush the system with nitrogen, replace the filter-drier and vacuum. The filter drier is responsible for removing moisture from the freon, and if it is overfilled or clogged, it also creates resistance to gas flow. This is work for a service center that requires special equipment.
| Symptom | Probable cause | Nature of compressor operation | Difficulty of repair |
|---|---|---|---|
| The freezer freezes, the refrigerator warm | Freon leak | Works without stopping | High (requires soldering) |
| The chamber is warm, the compressor is hot | Capillary clogged | Operates with overload | High (needs purge) |
| Temperature floats, ice in the channels | Faulty heating element defrost | Works cyclically | Medium (replacement of parts) |
| Noisy, but no cold | Compressor wear | Constant hum | High (motor replacement) |
Problems with the No Frost defrost system
In refrigerators Indesit No Frost the proper operation of the defrost system is critically important. If the defrost heating element, timer or shutdown thermostat fails, a “coat” of ice begins to grow on the evaporator in the freezer. This ice blocks the channels through which cold air should flow into the refrigerator compartment. As a result, the fan moves air, but it cannot pass through the ice jam.
The user may notice that the freezer is freezing, but the food in it freezes to the walls, and it is warm in the upper chamber. Over time, there is so much ice that it can crush plastic parts or jam the fan. A characteristic sign is also that after complete defrosting (for 24 hours), the refrigerator begins to work perfectly, but after 1-2 weeks the problem returns.
The malfunction may lie in several elements:
- ❄️ Heating element defrost —the evaporator is burnt out and does not heat.
- ❄️ Defrost thermostat —does not give a command to turn on the heating.
- ❄️ Defrost timer —does not switch the “cooling/defrost” modes.
- ❄️ Fuse — burned out due to overheating of the system.
☑️ Diagnostics of the No Frost system
⚠️ Attention: When checking the defrost system, be sure to unplug the refrigerator. Working with electrical components (heating element, fan) under voltage is deadly.
Damper and fan malfunctions
If everything is in order with freon and the defrost system, you should pay attention to the mechanical elements of the air supply. In refrigerators Indesit the air damper is responsible for the distribution of cold. It may become stuck in the closed position due to foreign objects, icing, or actuator failure. In this case, the physical access of cold air to the refrigerator compartment is blocked.
The fan located in the freezer compartment may also fail. If its impeller is covered with ice or the motor burns out, air circulation stops. You may hear that the fan is humming, but not spinning, or it will make strange sounds (grinding, crackling). In some models, when the door is opened, the fan should stop - check if this mechanism works.
For diagnostics, you need to remove the back panel in the freezer (after defrosting the unit). A visual inspection will show whether there is ice on the blades, whether the wiring is intact and whether the shaft rotates freely. Often the problem is solved by simple defrosting, if the ice has not yet become critical.
Other possible causes and settings
Before disassembling unit, eliminate the human factor. It is possible that the operating mode was accidentally changed in the settings. For example, the “Super Freeze” or “Vacation” mode is activated, which may affect the operation of the cameras differently depending on the model. It is also worth checking the tightness of the door seals: if warm air constantly enters the refrigerator compartment, the system cannot cope, even if it is technically sound.
Sometimes the problem lies in the thermostat or electronic control module. If the temperature sensor in the refrigerator compartment “lies” and shows that it is cold there, the module will not give a command to cool, although in fact it is warm there. Replacing a sensor is a simple procedure, but it requires precision in selecting an analogue.
Do not forget about banal things: do not load too many warm products into the chamber at the same time. This creates a peak load that the cold distribution system may not be able to handle, creating a temporary temperature imbalance. Allow the food to cool to room temperature before loading.
Why is the Indesit refrigerator very cold in the freezer, but not cold on top?
This is a classic sign of a freon leak or a clogged capillary system. There is only enough refrigerant for the first circuit (freezer), but it does not reach the second circuit (refrigerator). Diagnostics by a specialist is required.
Is it possible to operate the refrigerator if the upper chamber does not cool?
For a short time - yes, but you cannot do this for a long time. The compressor will work hard, trying to gain temperature, which will lead to its combustion. The products in the upper chamber will quickly deteriorate.
How much does the repair cost if the cause is a freon leak?
Repair includes finding the leak, soldering, replacing the filter-drier and refilling with freon. This is a complex technical process, the cost of which depends on the model and region, but is usually one of the most expensive procedures in refrigerator repair.
How to understand that the defrost heating element has burned out?
Without disassembly - based on indirect signs: ice in the freezer, heat from above, cyclical problems (after defrosting it works, then it doesn’t work again). You can accurately determine only by ringing the heating element with a multimeter: if it shows a break (infinity), it has burned out.
Do you need to change the compressor if the refrigerator has stopped cooling?
Not always. Often the problem is not with the compressor itself, but with a leak or blockage. The compressor is replaced only in case of mechanical destruction or combustion of the windings, which is confirmed by the technician's diagnostics.