Situation when a refrigerator Indesit with a system No Frost suddenly stops freezing in the upper compartment, causing panic in any home cook. Products begin to deteriorate, and you lose confidence in the future. However, before calling a technician or buying new equipment, it is worth understanding the structure of your model.
Often the problem lies not in a compressor failure, but in a banal failure of air circulation or freezing of the evaporator. The system No Frost (literally “without frost”) is more complex than conventional drip refrigerators, and requires a correct understanding of the processes of evaporation and defrosting.
In this article we will analyze in detail why Indesit stops keeping cold in the freezer, how to carry out initial diagnostics and whether it is possible to fix the problem yourself without expensive equipment.
The principle of operation of the No Frost system and the features of Indesit
To understand where to look for a breakdown, you need to imagine how your Indesitworks. Unlike older models, where the cold was generated on the walls, forced air circulation is used here. The fan drives cold flows from the evaporator, located behind the rear wall, through special channels into the upper chamber.
The main element here is evaporator. It is on its tubes that moisture freezes and is removed from the air. The defrosting heating element periodically turns on, melts the ice, and the water goes into the drainage. If this cycle is disrupted, the upper chamber stops receiving cold.
⚠️ Attention: Attempts to speed up defrosting using a hairdryer or boiling water can lead to deformation of plastic air ducts and cracking of the evaporator tubes. Use only natural defrosting for 24 hours.
Models Indesit often have one compressor for two chambers. This means that if there is a malfunction in the defrosting system, the freezer can work, but the cold simply does not reach the upper compartment due to an ice plug in the channels.
Primary diagnostics: inspection without opening
Before grabbing a screwdriver, it is necessary to exclude external factors. Often the reason that Indesit does not freeze is trivial and does not require repair. Check the following points to save time.
First of all, make sure that the door fits tightly. If the seal (elastic band) is dirty or damaged, warm air constantly enters and the system cannot cope with cooling. Also check if anything is blocking the ventilation holes inside the camera.
Pay attention to the indicators. On some models Indesit a flashing temperature indicator signals an increase in heat inside. If the defrost button or alarm light is on, this confirms a problem with the temperature regime.
It is important to check the thermostat settings. An accidental failure or power surge could disrupt the operating mode. Make sure that the regulator is not in the “0” or “Min” position.
Main causes of malfunction of the upper chamber
If external checks do not produce results, you will have to consider technical faults. In refrigerators Indesit No Frost there is a list of “suspects” that most often fail.
One of the most common reasons is malfunction of the defrost sensor. It tells the control unit when to turn on the heater. If the sensor “lies,” the ice does not melt, the channels become clogged, and the air stops circulating.
The second common culprit is fan. If it is jammed with ice or the motor is burned out, the cold simply will not be pumped into the upper part of the refrigerator. You can hear that the compressor is humming, but there is silence inside.
The third option is a freon leak or a clogged capillary tube. In this case, the refrigerator can work endlessly, but there will be no cold anywhere, or it will be very weak. This is a more complex case that requires the intervention of a specialist with the equipment.
Hidden reasons
Why do sensors fail?: Frequent power surges in the network lead to breakdown of the electronic components of the sensors. Also, the cause may be a factory defect or natural wear and tear after 7-10 years of operation.
Do not forget about the control module. If the “brain” of the refrigerator does not send a command to turn on the compressor or fan, the system will not work.
Step-by-step instructions for defrosting and checking the system
The most effective method of primary treatment Indesit is complete defrosting. This action helps in 80% of cases if the problem is caused by an ice jam in the system. No Frost.
Follow the following steps strictly in order:
- Disconnect the refrigerator from the power supply.
- Remove all food and shelves.
- Leave the doors open for at least 24 hours (preferably for a day).
- Wipe the insides with a dry cloth.
- Turn on the device and check operation after 2-3 hours.
⚠️ Attention: Do not turn on the refrigerator until you are sure that all moisture from the drainage system has completely evaporated. If water gets on the electrical contacts, it can cause a short circuit.
If after defrosting Indesit it worked normally, but a week later the problem recurred, then the defrosting system is not functioning. The ice will grow again and block the channels.
☑️ Checklist for proper defrosting
During defrosting, carefully inspect the back wall in the freezer. If, after switching on, a “coat” of frost quickly appears there, and there is heat in the refrigerator compartment, the problem is definitely in the defrost circuit.
Detailed analysis of malfunctions of the defrost system
The defrost system in Indesit consists of several key elements: a heater (heating element), a defrost sensor (thermostat) and timer (or electronic module). Let's look at them in more detail.
The defrosting heating element - this is a tube that heats up and melts the ice on the evaporator. If it burns out, the ice does not melt. You can check it with a multimeter for a “break”. The resistance of a working heating element is usually several hundred Ohms.
The defrost sensor (defroster) opens the heater circuit when the ice has melted. If it is faulty and does not close at low temperatures, the heating element will never turn on. This is a common reason why the upper chamber does not work.
Also plays an important role defrost fuse. It is in series with the heating element and burns out if the heater overheats. Replacing it takes five minutes, but without it the system will not start.
No signal to turn on the heating element| System element | Symptom of failure | Checking method | Probability |
|---|---|---|---|
| Defrost heating element | Ice does not melt, “fur coat” on the evaporator | Ringing with a multimeter | High |
| Defrost sensor | Resistance measurement at t < -5°C | Medium | |
| Fan | There is cold, but not blows into the chamber | Visual inspection of rotation | Medium |
| Fuse | Open defrost circuit | Ring for conductivity | Low |
To replace these parts in models Indesit often it is necessary to remove the back panel of the freezer. Be careful with plastic latches, they can become brittle after being used for a long time in the cold.
Problems with air circulation and fan
Even if the defrost system is working properly, the cold may not flow due to problems with the fan. In refrigerators No Frost it is the “heart” of the cold distribution system.
It often happens that the fan shaft becomes covered with ice. The motor hums, trying to turn over, but cannot. This leads to the fact that the upper chamber is not cooled, and the temperature in the freezer may be below normal.
Another reason is failure of the bearings or windings of the fan motor. In this case, it either stands still or makes a lot of noise and crackling. Replacing a fan is usually not difficult if you can find a similar model.
Also check the air ducts. In models Indesit they can become clogged with foreign objects (for example, pieces of packaging) that accidentally got into the air flow. This creates aerodynamic drag.
Refrigerant leaks and other complex breakdowns
If defrosting and checking the electrical system did not help, it may be a freon leak. In refrigerators Indesit with a system No Frost the evaporator is often built into the body (foamed), which makes repairs difficult.
Signs of a leak:
- ❄️ The compressor runs constantly without turning off.
- ❄️ The condenser (grid at the back) is only partially cold or warm.
- ❄️ There is no characteristic hissing or gurgling in the freezer during operation.
- ❄️ The temperature in the chambers gradually increases, despite the operation of the motor.
In this case, you need to call a technician with equipment to find leaks, evacuate the system and refill with freon. It is impossible to fix such a malfunction on your own.
⚠️ Attention: Freon is a colorless and odorless gas. If you smell a chemical smell, it could be an oil leak from the compressor or burning wiring. Ventilate the room urgently.
It is also worth mentioning the “crying” evaporator. If the drainage hole is clogged with debris or ice, the water does not drain, freezes and blocks the access to the cold. Cleaning the drainage with a thin wire or a syringe with warm water often solves the problem.
How long does an Indesit compressor last?
The average service life of compressors in Indesit refrigerators is 10-12 years under normal operating conditions. Frequent voltage fluctuations and insufficient clearance for ventilation at the rear shorten this period.
Frequently asked questions (FAQ)
Why did the Indesit refrigerator work after defrosting, but after a week it stopped freezing again?
This is a classic sign of a malfunction in the automatic defrosting system. Most likely, the heating element, defrost sensor or timer burned out. Ice builds up on the evaporator, blocks the fan, and the cold stops flowing into the chamber. Diagnosis of the defrost circuit is required.
Is it possible to operate the Indesit No Frost refrigerator with the freezer door open for testing?
No, you cannot leave the door open for more than 1-2 minutes. A large amount of moist air will enter the system, which will instantly freeze on the evaporator, causing even more severe freezing and fan failure. No Frost a large amount of moist air will enter, which will instantly freeze on the evaporator, causing even more severe freezing and damage to the fan.
Where is the defrost button in the Indesit refrigerator?
In most models Indesit s There is no mechanical control for a separate defrosting button - it happens automatically. Electronically controlled models may have a “Super Frost” function or a forced defrost button, but it is usually hidden in the menu or activated (by long pressing) certain keys, according to the instructions for the specific model.
What to do if it is warm in the upper chamber, but everything is frozen into ice in the lower (freezer)?
This indicates that the compressor is working, but it is cold does not circulate. Check if the fan is spinning. Most likely, the air supply channels are clogged with ice due to a defrost failure. A complete defrosting (24 hours) and a subsequent check of the defrosting system are required.