The situation when household appliances begin to work incorrectly always causes concern, especially when it comes to the safety of products. If you notice that Indesit refrigerator freezes very much, this is a sure sign of a failure in the temperature management system. Instead of standard microcliota maintenance, the unit goes into constant freezing mode, turning fresh vegetables into ice blocks, and milk into a solid block.
Similar behavior is typical for models with a drip defrosting system and units with function No Frost, although the reasons may vary. Owners often encounter the fact that food spoils faster due to freezing, and a thick coat of snow forms on the walls of the chamber. Ignoring the problem in the early stages can lead to failure of the compressor, which is forced to work without interruption.
In this material we will analyze in detail the technical aspects of the malfunction. You will learn how to carry out initial diagnostics, which controls fail most often and when it is really necessary to call a specialist, and when you can limit yourself to self-adjustment. Understanding the principles of operation Indesit will help you save time and money on repairs.
Failure of the thermostat and temperature sensors
The most common reason Indesit refrigerator is very coldis the failure of the thermostat (thermostat). This mechanical or electronic component is responsible for breaking the compressor power circuit when the set temperature is reached. If the contacts inside the thermostat “stick” in the closed position or the sensitivity of the bellows tube is lost, the compressor continues to drive the refrigerant through the system even when there is already arctic cold in the chamber.
In models with electronic control, the role of a mechanical regulator is performed by temperature sensors (thermistors). They change their resistance depending on heating or cooling. If the sensor “lies” and sends a signal to the control module that it is warm in the chamber, the “brains” of the refrigerator give the command to the compressor to work more intensely. Often the problem lies not in the sensor itself, but in oxidation of the contacts or disruption of the wiring leading to it.
How to check a thermostat with a multimeter?
To check a mechanical thermostat, it must be removed and “ringed” with a tester in ohmmeter mode. At room temperature, the contacts should be closed (resistance close to zero). If you place the sensitive tube in a container with ice, after a few minutes you should hear a click and the circuit will open (the resistance will go to infinity). If there is no click, the thermostat is faulty.
Symptoms of a malfunctioning temperature controller usually manifest themselves clearly and do not require deep technical knowledge for initial identification:
- 🧊 Food in the refrigerator compartment freezes, although the regulator knob is set to minimum.
- ⏱ The compressor operates practically without stops, a buzzing sound is heard constantly.
- 🌡 A continuous layer of ice more than 5-7 mm thick forms on the back wall of the refrigerator compartment.
- 🔌 Disconnecting the device from the network for 10-12 hours does not solve the problem - after turning on the “super freezing” mode is repeated.
Important understand that replacing a thermostat is a procedure accessible to a home handyman, but requires care. In electronic models Indesit with a display, diagnostics are more complicated and often require connecting a special tester or replacing the entire control module if the board does not see the new sensor.
Problems with the defrost system in No Frost models
If your Indesit refrigerator is equipped with a system No Frost and it started to freeze very much, while an ice lump forms in the freezer compartment, and there is water in the refrigerator compartment or, on the contrary, everything freezes, the problem lies in the defrost system. The operating principle of such units is based on the circulation of cold air, which is forced by a fan through an evaporator hidden behind the rear panel.
The key element here is a defrost timer or an electronic controller, which periodically (usually every 8-12 hours) turns on the heating element (heating element) for melting ice on the evaporator. If the heating element has burned out, the defrost fuse has burned out, or the defrost sensor has failed, the ice will not melt. The evaporator becomes overgrown with a “fur coat”, the ventilation ducts are blocked, and cold air stops circulating normally or, conversely, blows constantly without having time to warm up.
System diagnostics No Frost requires partial disassembly of the freezer. You will have to remove the back plastic panel to get to the evaporator. A visual inspection often provides more information than any measurements:
- ❄️ A thick layer of ice blocking the fan blades.
- 🔥 Visible damage to the heating element (swelling, breaks in the nichrome thread).
- 💧 Lack of drainage for melt water, which leads to to the formation of an ice plug in the drainage hole.
- 🔊 The fan is humming, but air does not flow from the deflectors or flows very weakly.
⚠️ Attention: When disassembling the system No Frost be extremely careful with plastic fasteners and tubes. In models Indesit plastic becomes brittle over time. Do not use sharp objects (knives, screwdrivers) to chip ice on the evaporator - breakdown of the circuit tubes will lead to expensive repairs with refilling with freon.
Malfunctions of the control module and electrical circuit
Modern refrigerators Indesit are complex electronic devices where the central control module is responsible for all processes. If the electronics are faulty, they may send incorrect commands to the actuators. For example, the compressor relay on the board may “stick” in the “on” position, causing the motor to operate continuously, regardless of sensor readings.
Failures are often caused by power surges in the network, which damage capacitors or microcircuits on the board. In such cases the refrigerator is freezing it is chaotic: sometimes it turns off for a long time, sometimes it works for days. It is also possible for the contacts to oxidize at the junction of the wires with the board, especially in conditions of high humidity, which inevitably occurs when the defrost system is faulty.
Diagnostics of the control module at home is limited to visual inspection and checking the output voltage. If you see blackening on the board, swollen capacitors or smell a burning smell, DIY repairs are only possible if you have skills in soldering and working with electronics.
It is worth noting that in some models Indesit with electronics EVO or EVO II failures may occur software. Sometimes a full reset (Hard Reset) helps, which is performed by a certain combination of buttons on the control panel. However, if the problem is in the hardware, a soft reset will only provide a temporary effect.
Freon leaks and compressor problems
Although a refrigerant leak is more often associated with insufficient cooling, in some scenarios it can lead to a paradox effect when the refrigerator is running out of steam. If there is critically little freon in the system, the compressor cannot gain the required pressure and switches off according to the sensor. It works constantly, trying to “catch up” the temperature, which leads to severe overcooling of the evaporator and, as a result, intense ice formation in those areas where the refrigerant is still circulating.
Another option is a malfunction of the compressor itself. If compression is impaired (valve wear), operating efficiency decreases. The motor hums, heats up, consumes a lot of electricity, but produces little cold. The user, seeing that the food is spoiling, turns the thermostat knob to maximum. As a result, the unit works at the limit, the freezer compartment is “clogged” with snow, and the refrigerator compartment is still a little warm, although the walls may be icy.
The main signs of problems with a sealed circuit or motor:
- 🔊 The compressor operates louder than usual, with a metallic clanging or humming.
- 🔥 The condenser grill at the back of the refrigerator is either barely warm or unevenly hot.
- 🧊 Ice forms only in a certain place (for example, at the entrance of the tubes to the freezer), and the rest of the chamber is warm.
- ⚡ Consumption has increased sharply electricity.
Repair in this case requires calling a technician with equipment to find leaks, evacuate the system and refill freon. It is impossible to fix a leak on your own and correctly calculate the refrigerant dosage.
The influence of improper operation and external factors
Not always the reason why the Indesit refrigerator freezes a lotlies in a breakdown. Often the users themselves or the operating conditions are to blame. For example, if you have just loaded a large amount of warm food into the chamber, the temperature sensor will detect a sudden increase in heat. In response, the system will turn on the intensive freezing mode. If at this moment you do not return the settings back, the refrigerator will continue to freeze with a vengeance.
The position of the thermostat also plays an important role. On mechanical models, the scale may not be calibrated. Position “3” on one device may correspond to position “5” on another. If it is cold in your apartment (below +16°C), the refrigerator may behave incorrectly, since it is designed to operate in a certain climate class.
☑️ Checking the operating conditions
Another important factor is the tightness of the door seal. If the rubber Indesit wears out, warm, moist air constantly enters the chamber. The system tries to compensate for the heat and runs non-stop, which leads to icing. Check the seal: it should be soft, elastic and fit snugly to the body around the entire perimeter.
Comparative table of symptoms and probable breakdowns
To simplify diagnostics, we have compiled a table that will help compare the observed symptoms with the most likely faults. This will allow you to more accurately formulate the problem when talking with a service center or when searching for a spare part.
| Symptom | Probable cause | Difficulty of repair |
|---|---|---|
| The compressor does not turn off, there is ice in the chamber | The thermostat or temperature sensor is faulty | Low (part replacement) |
| Snow coat in No Frost, the fan is humming | The defrost heating element or defrost sensor is burnt out | Medium (disassembly) |
| Ice only at the rear wall, the compressor is hot | Freon leak or capillary blockage | High (needs a technician) |
| Chaotic operation, blinking indicators | Control module or wiring failure | High (electronics) |
| Food freezes, but the compressor turns off | Incorrect thermostat setting or position | Minimum (adjustment) |
Please note that in older models Indesit mechanical thermostats may “float” according to the readings over time. If your refrigerator is more than 7-10 years old, even a seemingly serviceable regulator can give an error of 5-7 degrees, which leads to freezing.
FAQ: Frequently Asked Questions
Is it possible to use a refrigerator if it gets very cold?
Short-term operation is possible, but undesirable. Constant operation of the compressor at the limit reduces its service life, and frozen products lose their taste. In addition, a thick layer of ice impairs heat transfer, causing equipment to consume more electricity. It is better to eliminate the cause.
Why, after defrosting, did the refrigerator start to freeze very hard again after a couple of days?
This indicates that the reason is not the amount of ice, but a malfunction of the control electronics or sensors. Defrosting only temporarily relieves the symptom (ice jam), but does not cure the “disease.” Most likely, you need to replace the thermostat, defrost sensor, or repair the module.
How to correctly set the temperature in the Indesit refrigerator?
The optimal temperature in the refrigerator compartment is +2...+4°C. On mechanical models with a 1 to 5 (or 1 to 7) adjuster, the middle position (usually 3) is nominal. If food freezes, reduce power (turn counterclockwise or lower). In electronic models, set the value to +3°C or +4°C.
Water freezes in the refrigerator door - is this normal?
No, water should not freeze in the door shelves, the temperature there should be higher than at the back wall. If the water in the door turns to ice, the main chamber is too cold (below 0°C). This confirms the diagnosis of a malfunction of the thermostat or defrost system.
How much does it cost to repair if the defrosting heating element burns out?
The cost consists of the price of the spare part (the heating element for Indesit is relatively inexpensive) and the work of the technician. However, the total amount may increase if complex disassembly or replacement of additional elements (fuse, sensor) is required. The exact price can only be found out after diagnostics.