The situation when Indesit refrigerator stops freezing in the upper compartment is one of the most common complaints from users. While the lower freezer drawer continues to work properly, the food in the main chamber begins to deteriorate, and ice may appear on the walls or, conversely, a puddle of water may form. This behavior of the equipment often takes you by surprise, because visually the unit looks in good order: the light is on, the compressor is working, but temperature mode it is broken.
The first thing that needs to be done is to eliminate trivial errors problems such as improperly installed regulator or clogged vents. However, if simple manipulations do not help, we may be talking about more serious technical problems associated with refrigerant circulation or the operation of the defrost system. Understanding the design of your model will help you quickly diagnose a malfunction and decide whether to call a technician or repair it yourself.
Primary diagnostics and checking settings
Before looking for complex breakdowns inside the unit, you should carefully check external factors. Often the reason lies in incorrect settings or overloading of the camera with products. In refrigerators Indesit with the No Frost or Low Frost system, it is critical that air circulates freely between the shelves. If you have just loaded a large amount of warm food or tightly packed shelves, cold air simply cannot reach the temperature sensors.
Check the position of the thermostat. If it is set to the minimum value, the upper chamber may not have time to cool, especially in the hot season. It is also worth inspecting the door sealing rubber bands: if they do not fit tightly, warm air constantly enters the chamber and the unit cannot cope with the load. In such cases compressor works almost without interruption, but there is no desired effect.
Pay attention to the nature of the noise of the running engine. If it hums smoothly as usual, the problem is most likely in the control system or cold distribution. If the sound becomes quieter or, conversely, clicks appear, this may indicate problems with the starting relay or the motor itself. It is important to give the equipment a rest: unplug it for 10–12 hours, defrost it completely and try to start it again without food.
In some electronically controlled models, a software failure may have occurred. Try resetting to factory settings if the instructions for your series provide this. Often, after power surges the control module freezes and stops reading sensor readings correctly, which is why it does not send a command to cool the upper zone.
Problems with the defrost system in No Frost models
If yours Indesit equipped with a system No Frostthe most likely reason for the lack of cold in the upper compartment is a malfunction of the defrost system. The operating principle of such models is based on forced air circulation, which is cooled in an evaporator hidden behind the rear wall. If the evaporator is overgrown with a “coat” of ice, the air flow is blocked, and the cold simply does not enter the chamber.
A chain of elements is responsible for the defrosting process: Defrost heating element, a defrost sensor (thermostat) and a timer (or electronic module). Most often, it is the heating element or sensor that fails, which does not give the command to turn on the heating. As a result, ice freezes on the fan and air ducts, blocking the operation of the entire system. You may notice that the back wall in the chamber is swollen or covered with an uneven layer of frost.
For diagnostics, you need to remove the back panel in the freezer chamber (or in the top, depending on the design) and visually assess the condition of the evaporator. If it is covered in ice and the fan is standing still or humming, trying to break through the ice plug, the problem is confirmed. It is also worth checking the integrity of the wires going to the heating element, as they often burn out or oxidize.
⚠️ Attention: Before removing the panels and checking the electrical circuits, be sure to disconnect the refrigerator from the power supply! Working with live electrical wiring is life-threatening.
A common mistake is trying to break off the ice with a knife or other sharp objects. This can damage the evaporator tubes and cause a freon leak, turning a simple repair into an expensive refill. Defrost the chamber only naturally or using a hairdryer at the minimum temperature, directing the air flow carefully.
☑️ Checking the No Frost system
Refrigerant leak and clogged capillary system
One of the most unpleasant breakdowns when Indesit refrigerator does not freeze from above is a freon leak. The refrigerant circulates in a closed circuit, and if a microcrack forms in the tubes, the gas gradually evaporates. At first, productivity drops slightly, and the unit simply works longer, but over time, the cold is no longer enough even for one chamber. Usually, it is the upper compartment that stops freezing first.
The second option for mechanical failure is clogged capillary tube. Not only freon circulates in the system, but also oil to lubricate the compressor. Over time, especially with long-term operation or the use of low-quality refrigerants during previous repairs, a plug of paraffins or oxidation products forms in the narrow part of the tube. This prevents the normal circulation of the substance, and the pressure in the system drops.
It is difficult to diagnose these conditions at home, since a pressure gauge station is required. However, there are indirect signs. If there is a leak or blockage, the condenser (grid at the back or sides) will only be partially warm (for example, 30-40%), and the rest will remain cold. When working properly, it should be evenly hot over the entire area.
Also pay attention to the operation of the compressor. If there is a lack of freon or a blockage, the engine may turn on, run for several minutes, then click and turn off due to thermal protection. Or, conversely, work continuously, trying to gain temperature, but to no avail. In both cases, the intervention of a specialist with equipment to find leaks, vacuum and refill is required.
Is it possible to refill the refrigerator yourself?
Self-refueling is impossible without special equipment. You will need a vacuum pump, a pressure gauge station, scales and precise knowledge of the type and amount of freon. In addition, the leak must be found and sealed, otherwise the gas will escape again in a few days or weeks. An attempt to “just add gas” without eliminating the cause will lead to compressor failure.
Faulty air damper and fan
In two-chamber models Indesit, especially in series with one compressor, cold is supplied to the upper chamber from the freezer through a special channel. Regulates this flow air damper (damper). It opens and closes at the command of an electronic module or mechanical thermostat. If the damper is stuck in the closed position, cold air simply does not enter the upper compartment, remaining in the freezer.
The cause of jamming may be a mechanical obstacle (a piece of ice, fallen product) or a failure of the damper motor. In electronically controlled models, the drive gear itself often breaks or the motor winding burns out. You can check this by reaching the air supply duct (usually located at the top of the rear wall of the refrigerator compartment) and trying to manually turn the damper.
The fan is another key element of the system No Frost. It is he who drives cold air through the chambers. If its blades are covered with ice or the bearing fails, circulation stops. The fan may hum, but not rotate, or operate with strong vibration. In some cases, a fan malfunction is signaled by the absence of the characteristic noise of the air flow, which is usually heard when the door of a working refrigerator is open.
Interestingly, a malfunction of the damper is often confused with a lack of freon, since the symptoms are similar: the freezer is freezing, but the refrigerator compartment is warm. However, if the damper breaks down, the compressor may turn off in time, since the temperature in the freezer has already been reached, but the cold does not rise. This is an important diagnostic sign for the technician.
Table of main symptoms and probable causes
To simplify diagnostics, we suggest that you familiarize yourself with the summary table, which will help compare the observed symptoms with the most likely malfunctions. Remember that an accurate diagnosis can only be made by a specialist after an instrumental examination.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The compressor is humming, but there is no cold anywhere | Freon leak, capillary blockage, compressor breakdown | High (needs a technician) |
| The freezer is freezing, the top is warm, there is ice on the wall | Faulty defrost system (heating element, sensor) | Medium (replacement of parts) |
| The refrigerator turns on and immediately turns off | Start relay, thermal protection, problems with the compressor | Medium/High |
| Fan is noisy, no air circulation | Fan freezing, fan motor failure | Low/Medium |
| Temperature fluctuates, sometimes freezing, sometimes not | Faulty thermostat or temperature sensor | Low (sensor replacement) |
By analyzing the data in the table, you can understand the scale of the proposed work. Replacing a sensor or heating element can often be done by a careful home craftsman with a multimeter, while finding a leak or replacing a compressor requires professional tools and soldering skills.
It is worth considering that in older models Indesit the life of some components may be exhausted simply due to age. If the refrigerator is more than 10-12 years old, the feasibility of expensive repairs (for example, replacing a compressor) is called into question, since other components may also soon fail.
When you need to call a professional technician
Despite the desire to save money, there are situations where independent repairs are not only ineffective, but also dangerous. If diagnostics indicate problems with refrigerant (freon), you cannot do without special equipment. The technician uses a leak detector to find the location of the leak, which cannot be done “by eye” or using a soap solution in hard-to-reach places in the foamed casing.
Professional help is also needed when replacing the compressor. This process includes not only dismantling the old motor and installing a new one, but also high-quality soldering of pipes in a nitrogen environment (to avoid oxidation within the system), evacuation of the circuit to remove moisture and precise charging of freon by weight. Violation of the technology will lead to the previous breakdown of the new compressor.
If you do not have the skills to work with electrical circuits and a multimeter, you should not get involved in the “electrics” of the refrigerator. An error in the connection can lead to the burning of an expensive control modulecontrol module, which in modern models Indesit costs a lot of money and is often supplied only assembled with the housing.
⚠️ Attention: Opening a sealed circuit without a license and equipment is prohibited by the environmental standards of many countries, since freon destroys the ozone layer. Entrust this work to certified specialists.
In addition, professional repairs are usually accompanied by a warranty. If you fixed the refrigerator yourself and a week later it breaks again, there will be no one to blame. The master is responsible for the work performed and the spare parts used, which gives you confidence in the result.
Prevention of repeated breakdowns
In order Indesit refrigerator to serve for a long time and not require frequent repairs, it is important to follow simple operating rules. Regularly, at least once every six months, completely defrost the unit, even if you have a system No Frost. This will remove micro-ice in hidden channels and give the equipment a rest.
Keep the condenser clean. If your model has an open black grille at the back, vacuum it periodically or gently brush it with a soft brush. Dust and animal hair act as a heat insulator, forcing the compressor to work overload, which reduces its life. The same applies to the gap between the back wall of the refrigerator and the kitchen wall - it should be at least 5-7 cm for normal ventilation.
Do not place hot dishes in the chamber. This creates a sharp temperature drop and increases humidity, which leads to increased ice formation on the evaporator and increased load on the defrost system. Also check the integrity of the seal: if it is dirty, wipe it with a weak soda solution, and if it has lost elasticity, consider replacing it.
The stability of the voltage in the network is another factor in longevity. Voltage surges are detrimental to the start relay and compressor. If the light in your house often “flashes”, it is recommended to install a voltage stabilizer or at least a surge protector with surge protection.
How to extend the life of a seal?
Once every 3-4 months, wipe the rubber door seal with glycerin or a special rubber product. This will prevent drying out and cracking, maintaining the tightness of the chamber.
Why does ice freeze on the back wall in the Indesit refrigerator?
Ice on the back wall of the fridge compartment most often indicates problems with water drainage or a malfunction of the defrost system. If the water produced by melting ice does not go down the drain hole (due to a blockage or freezing), it accumulates and freezes. Also, the reason may be a loose fit of the door, due to which moist air enters the chamber, which condenses and freezes on the coldest surface - the back wall.
How long should the refrigerator thaw before turning it on again?
For complete and safe defrosting, especially if a thick coat of ice has formed, the refrigerator must remain unplugged at least 12 hours, or better yet, 24 hours. This is necessary so that the ice melts in all hidden channels and the evaporator. Turning on the unit with ice residue inside can lead to water hammer in the compressor or rapid rapid failure of the defrost system again.
Is it possible to use a refrigerator with a non-functioning upper chamber?
You can only use a refrigerator in which the upper chamber does not work as a freezer if the lower part is functioning properly. However, you cannot store food in the warm upper chamber - it will quickly spoil. Long-term operation in this mode (when the compressor tries to cool the chamber, but cannot) will lead to overheating and combustion of the engine, so it is better to turn off the unit until repairs.
What kind of freon is used in Indesit refrigerators?
In modern models Indesit R600a refrigerant is most often used (isobutane). It is more environmentally friendly and economical, but requires precise dosage when refueling. In older models, R134a may be found. The type of refrigerant and its exact amount (in grams) are always indicated on the technical sticker located inside or behind the refrigerator. Using the wrong freon is unacceptable.
What to do if after defrosting the refrigerator still does not freeze?
If after a complete 24-hour defrosting and turning on without load for 2-3 hours the temperature does not drop, then the problem is of a technical nature. Most likely, one of the components is faulty: the compressor does not create the required pressure, there is a freon leak, or the defrost/circulation system does not work. In this case, independent actions are exhausted, and diagnostics from a specialist is required.