Brand refrigeration equipment Indesit is deservedly popular due to its reliability and affordable price, however, even the highest quality units can malfunction over time. One of the most common problems faced by owners is excessive cooling of the chambers, leading to the formation of a thick ice crust on the back wall or even in the main compartment. Excessive freezing ice not only reduces the usable volume for food, but can also indicate serious malfunctions in the temperature control system or the tightness of the circuit.
If you notice that in your refrigerator Indesit No Frost or a classic model with a drip defrosting system, food freezes where it should simply be cooled, you cannot ignore this signal. Long-term operation in abnormal mode leads to increased energy consumption, compressor wear and inventory damage. In this article, we will analyze in detail the main reasons why the refrigerator freezes inside, and determine which of them can be eliminated independently, and which require the intervention of a specialist.
Faults of the thermostat and temperature sensors
The most likely culprit for the fact that the refrigerator Indesit began to freeze more than usual is the failure of the thermostat. This element is responsible for breaking the compressor power supply circuit when the set temperature inside the chambers is reached. If the contacts inside the thermostat are “stuck” in the closed position or the sensor transmits incorrect readings, the motor-compressor will work continuously without turning off to rest. As a result, the temperature drops significantly below normal, turning vegetables into ice and milk into a solid block.
In models with electronic control, the role of a mechanical regulator is performed by air temperature sensors. They can fail due to oxidation of contacts, moisture ingress, or natural aging of electronic components. Sensor malfunction often leads to the control board “thinking” that it is warm in the chamber and giving a command for increased cooling. Diagnosis of such elements requires the use of a multimeter to check resistance under different temperature conditions.
⚠️ Attention: Before replacing the thermostat or sensors, be sure to unplug the refrigerator from the power supply for at least 30 minutes. Working with electrical components under voltage or immediately after the compressor is running may result in electric shock or false diagnostic readings.
To understand how different components affect system operation, consider their main characteristics and symptoms of malfunction in the table below.
| Component | Function | Symptom of breakdown | Check method |
|---|---|---|---|
| Thermostat | Adjustment of compressor switching | Compressor does not turn off, severe icing | Continuity contacts |
| Defrost sensor | Evaporator temperature control | Snow accumulation in the freezer, water leakage | Resistance measurement |
| Defrost heating element | Heating the evaporator for defrosting | Ice coat on the evaporator | Checking the integrity of the spiral |
| Control board | Processing sensor signals | Chaotic operation, errors on the display | Diagnostics of error codes |
Replacing the thermostat in refrigerators Indesit usually does not require complex equipment, but it is important to choose an analogue with identical parameters, especially the length of the capillary tube and the on/off temperature. An incorrectly selected regulator can lead to the fact that the refrigerator either stops freezing at all or operates in eternal freezing mode.
Problems with the defrost system in No Frost models
Equipment owners Indesit No Frost often face a situation when it becomes too cold in the main refrigeration chamber, and ice forms on the back wall, although the system should prevent this. The cause is often a problem with the defrost cycle of the evaporator located behind the back of the freezer. If the defrost heating element is burned out, the timer is jammed, or the defrost sensor is out of order, the ice does not melt, but builds up layer by layer.
When the evaporator becomes overgrown with ice, the passage for air flow narrows or is completely blocked. The fan begins to circulate air with less efficiency, but at the same time the evaporator itself, deprived of heat exchange with the chamber air, can become supercooled locally. At some point, pieces of ice may break off and block the air channel leading to the refrigerator compartment, which will lead to a sharp drop in temperature in this particular area.
To eliminate this problem, it is necessary to completely defrost the unit. Leave the refrigerator turned off for a day to allow all the ice inside the evaporator system to melt. If, after turning on and setting the temperature, the problem returns after 1-2 weeks, it means that one of the elements of the defrost system is faulty and requires replacement.
☑️ Diagnostics of the No Frost system
It is worth noting that in some models Indesit there is a manufacturing defect wiring going to the defrost heating element. Wires can rub against the edges of the plastic box or oxidize due to constant moisture. A visual inspection of the wiring harness often helps to find the location of the break without deep disassembly of the assembly.
Refrigerant leak and seal failure
Paradoxically, a freon leak can also cause the refrigerator to freeze inside, although more often we expect a complete absence of cold. If there is a slight leak of refrigerant, the system loses efficiency, and the compressor is forced to work almost non-stop, trying to reach the set temperature. As a result of such a “tear” in the evaporator, local hypothermia may be observed in the freon inlet area, which leads to the formation of an ice build-up in one corner of the chamber.
If you notice that the refrigerator is humming continuously, and food begins to freeze unevenly (for example, only at the back wall or in the corner), this is an alarming sign. Leakage the circuit may be caused by microcracks in the evaporator, corrosion of pipelines or poor-quality factory soldering. Over time, the amount of refrigerant will decrease so much that the cold will no longer be produced at all.
It is extremely difficult to diagnose a leak visually, since freon is a colorless and odorless gas. Craftsmen use special leak detectors or a method of washing pipeline joints. Finding the leak location and refilling the refrigerator on your own without professional equipment and skills is almost impossible.
⚠️ Attention: If you find an oily stain on the floor under the refrigerator or on the pipes at the back, this is almost guaranteed to indicate a freon leak along with compressor oil. Immediately turn off the appliance and call a technician.
Is it possible to refuel the refrigerator yourself?
Refilling the refrigerator yourself is dangerous and ineffective. This requires a vacuum pump to remove moisture from the system, precise scales for dosing freon, and special tools for soldering. An incorrect dose of refrigerant will lead to compressor failure in a short time.
Improper operation and placement of equipment
Before looking for complex technical faults, it is worth analyzing the operating conditions of your Indesit. Often the cause of excess cold lies in simple user errors. For example, if the refrigerator is installed too close to the wall or radiators, air circulation around the condenser is disrupted. This leads to system overheating and malfunctions in operating algorithms, which can cause chaotic cooling.
Another common mistake is setting the minimum temperature on the regulator in the summer. Many users, wanting to compensate for the heat in the kitchen, turn the thermostat knob to maximum. As a result, the compressor operates at its maximum capacity, and the food in the refrigerator freezes. The optimal setting depends on the season and the load on the cameras.
It is also worth checking the tightness of the door. If the sealing rubber is worn out, dirty, or the door is warped, warm, moist air enters inside. The system tries to cool this volume by working in enhanced mode, which leads to abundant condensation and its subsequent freezing on the walls and products.
Failures in the operation of the electronic control module
Modern refrigerators Indesit are equipped with electronic control boards that coordinate the operation of all components. Sometimes the reason that the freezer is working too hard is due to an electronic glitch. Power surges in the network, lightning strikes, or simply a manufacturing defect can cause the control relay to “stick” in the on state.
In such cases, the compressor receives a constant signal to operate, ignoring the readings of the temperature sensors. Outwardly, it looks like the refrigerator has “gone crazy.” The first step in such a situation should be to attempt a soft reset: disconnect the device from the network for 15-20 minutes. This will allow you to reset errors in the controller's memory.
If after a reboot the situation repeats, there is likely a physical malfunction of the board components: a burnt resistor, a swollen capacitor, or a breakdown of the control relays microscope. Repairing a module requires skills in working with a soldering iron and knowledge of radio engineering, so in most cases it is more rational to replace the entire board or contact a service center.
When you need to call a professional technician
Although many causes of excessive cooling can be diagnosed and even eliminated on your own, there are situations where you cannot do without qualified help. If you have checked the thermostat, made sure that the seal is intact and the settings are correct, and the refrigerator continues to freeze, the problem may lie in hidden components, such as the capillary tube or the compressor itself.
It is especially dangerous to ignore symptoms if they are accompanied by extraneous sounds: gurgling, hissing or metallic knocking. This may indicate a hydraulic shock in the compressor due to the ingress of liquid freon, which is a direct threat to the “heart” of the refrigerator. In such cases, delays in repairs may lead to the need to replace the compressor, which constitutes a significant part of the cost of the entire unit.
A master is also needed if evacuation of the system and accurate refrigerant charging are required. These operations cannot be performed efficiently at home. Professional repair guarantees not only the elimination of the current malfunction, but also checking of adjacent components, which will extend the life of your Indesit for many years.
Frequently asked questions (FAQ)
Why does the water in the door freeze in the Indesit refrigerator?
Freezing of water in the door niches usually indicates that the temperature in the chamber has dropped below 0°C. This may be caused by a faulty thermostat that does not turn off the compressor, or a power regulator setting that is too low. Also, the reason may be a violation of the door seal, due to which cold air actively enters the seal area.
Is it possible to continue to use the refrigerator if it is very cold?
Short-term use is possible, but not recommended. Constant operation of the compressor without switching off leads to its overheating and rapid wear. In addition, products lose their taste and beneficial properties when frozen, and the ice crust worsens heat transfer, causing equipment to consume more electricity.
How to defrost an Indesit refrigerator correctly?
You must completely disconnect the device from the network, remove all products and leave the doors open for at least 10-12 hours (preferably for a day for the No Frost system). Do not use a knife or hair dryer to speed up the process, as this may damage the evaporator or plastic housing. Collect the melt water in a container and wipe the chambers dry before turning it on.
Why did the refrigerator start to freeze strongly again after defrosting?
If after complete defrosting the problem returned, then the reason is not the accumulated ice, but a technical malfunction. Most likely, the thermostat, temperature sensor or elements of the defrost system have failed. Diagnosis and replacement of the defective part is required.