Faced with the fact that the refrigerator Indesit has stopped freezing or is working intermittently, many owners immediately begin to look for information about the refrigerant. This is a logical first step, because it is freon the working environment that ensures the cooling of products. However, without understanding exactly what type of gas circulates in your specific model, any repair attempts may turn out to be not only useless, but also dangerous.
Modern refrigerators of this brand, like any other equipment, can be filled with various substances depending on the year of manufacture and energy efficiency class. Previously, one standard was used everywhere, but today environmental standards dictate their own rules, forcing manufacturers to switch to safer mixtures. The exact type of refrigerant is always indicated on the factory sticker located on the back wall or inside the chamber, and the use of unsuitable gas is strictly prohibited.
In this article we will analyze in detail what types of freons were used engineers Indesit over the past decades, how to independently diagnose a leak and why you can’t just “add” gas without eliminating the cause of its disappearance. Understanding these nuances will help you competently build a dialogue with the technician or decide on the advisability of repairing the old unit.
Main types of refrigerants in Indesit technology
The history of the development of the company's refrigeration equipment Indesit counts back decades, and during this time the chemical composition of the “blood” of refrigerators has changed dramatically. In older models released before the mid-2000s, one could most often find R12. It was an effective, but environmentally hazardous freon that destroyed the ozone layer, so its production and use was legally limited by international agreements.
It was replaced by R134a, which became the de facto standard for most household refrigerators in the middle price segment. This gas is chemically inert, non-flammable and safe for humans at normal atmospheric pressure. It is this type of freon that is most often found in popular models Indesit with a system No Frost or drip defrosting, produced between 2000 and 2015.
The most modern and environmentally friendly are hydrocarbon refrigerants, in particular R600a (isobutane). Despite its high efficiency and low energy consumption, this gas has one significant drawback - it is flammable. In refrigerators Indesit recent years of production, exactly R600ais used, which requires the technician to be especially careful and have a special spark-proof tool when carrying out work.
- 🧊 R12 is outdated freon, requiring an oil change during system conversion.
- ❄️ R134a is the most common type for middle-aged models category.
- 🔥 R600a - modern, economical, but explosive gas in new models.
⚠️ Attention: Mixing different types of freons (for example, adding R134a to a system that contained R12) leads to irreversible damage to the compressor and the formation of acidic compounds that corrode the tubes from the inside.
How to determine the type of freon in your model
Before ordering repairs or buying a gas cylinder, you must accurately identify the substance for which your system is designed. The most reliable way is a visual inspection of the technical documentation. On the body of each refrigerator Indesit there is a factory marking plate, which contains comprehensive information about the technical characteristics of the unit.
Usually this sticker is located on the back wall of the refrigerator, less often - on the inner side wall of the refrigerator compartment or at the end of the door. Look for the field labeled Refrigerant or “Refrigerant”. An alphanumeric designation (for example, R134a) and the number of grams required for a full refill will be indicated next to it. This data cannot be ignored, since the saturation pressure of different gases differs significantly.
If the sticker is worn off or missing, you can use indirect signs. Models with black compressors installed openly at the rear are most often filled R134a. Units where the compressor is “rolled up” in a metal casing along with a condenser (often found in old “Stinols”, produced under the brand Indesit) may contain R12 or its analogues. However, relying on a visual inspection of the compressor is risky; it is better to find the model number and punch it in the database.
Model and refrigerant correspondence table
To simplify the search for information, we have compiled a summary table that covers popular series of refrigerators Indesit. Remember that within the same series, different compressors and, accordingly, different types of freon could be used in different years. Therefore, the table is for reference only, and the sticker on your device always takes precedence.
| Series / Model | Years of production | Freon type | Features |
|---|---|---|---|
| Indesit C 130, C 132 | 1998–2005 | R12 / R134a | Transient possible period |
| Indesit DF 416, DF 418 | 2005–2015 | R134a | No Frost system |
| Indesit DS 316, DS 318 | 2010–2018 | R134a | Drip system |
| Indesit EF 18, EF 20 | 2016–2023 | R600a | High energy efficiency |
| Indesit ITS 4180 | 2019–present | R600a | Thin walls, quiet compressor |
It is important to note that the amount of refrigerant (filling mass) is also critically important. For R134a a typical dressing is from 100 to 140 grams, while for R600a requires only 50–70 grams. An overdose of even 10 grams in a system with isobutane can lead to a sharp increase in pressure and protection or destruction of the circuit.
Is it possible to replace R12 with R134a?
Yes, such a replacement (conversion) is possible and is often practiced when repairing old refrigerators, since R12 has been discontinued. However, the process requires a complete replacement of the compressor oil with synthetic oil (POE), since mineral oil does not mix with R134a. It may also be necessary to replace the filter-drier and throttling element.
Signs of a leak and diagnostics of the system
Freon in a working refrigerator Indesit circulates in a closed circuit and is not consumed over time, like fuel in a car. If the gas has disappeared somewhere, it means that leakhas appeared in the system. The first and most obvious sign is a violation of the temperature regime: the food in the refrigerator begins to deteriorate, and the ice melts in the freezer or, conversely, the “fur coat” freezes on only one of the evaporators.
Visually it is difficult to detect a leak, since freon has neither color nor odor (although R600a is added odorants for safety, their concentration is negligible). However, with a strong leak of R134a, you can sometimes hear a characteristic hissing sound if you listen carefully to the rear wall in silence. A more reliable method is to check the operation of the compressor: it can turn on, work for several minutes and turn off due to overload, or work around the clock without stopping, without reaching the set temperature.
Another symptom is swelling of the side walls of the refrigerator (in models where the condenser is built into the walls of the case) or the appearance of rust in the places where the tubes are soldered. If you notice oily spots under the refrigerator or on the pipes at the back, this is an almost one hundred percent indicator that gas has also left the system along with the oil.
- 🌡️ The temperature in the chambers is higher than the set temperature, despite the maximum thermostat setting.
- 🔊 The compressor hums continuously or often clicks, trying to start.
- 💧 The appearance of oily traces on the floor or on the system elements at the back of the unit.
Refilling technology and necessary tools
The process of refilling the refrigerator Indesit with freon is not just “pumping up” gas, like a bicycle tire. This is a complex technical procedure that requires maintaining a vacuum and precise dosage. First you need to find and fix the leak, otherwise all the gas will come out again in a few days or weeks. After eliminating the malfunction, the system must be purged with nitrogen to remove moisture and combustion products.
The key step is to create a deep vacuum in the outline. For this, a vacuum pump is used, which is connected to the service connection. Pumping time depends on the power of the pump and the volume of the system, but is usually at least 15–20 minutes. Residual moisture in the system, upon contact with freon and oil, turns into acid, which will quickly damage the compressor.
Refilling is carried out strictly according to scales. The freon cylinder is placed on an electronic scale, and the technician controls the amount of gas entering the system with an accuracy of up to a gram. The pressure in the system is a secondary parameter that depends on the ambient temperature, so you cannot rely only on the pressure gauge. After refueling, the service tube is sealed and the tightness of the soldering points is checked with a soap solution.
☑️ Checklist for the master
⚠️ Attention: When working with freon R600a (isobutane), it is strictly forbidden to use an open flame for soldering near places of possible gas concentration. The room must be well ventilated, since the gas is heavier than air and can accumulate below, forming an explosive mixture.
Common mistakes during self-repair
Attempts to save on calling a technician often lead to even greater expenses. One of the main mistakes is buying cheap Chinese refill kits with small cans. They often do not contain pure freon, but a mixture of gases with unknown impurities, which can “kill” the compressor in a matter of weeks. Another common problem is ignoring replacement. This element is inexpensive, but its function is critical: it retains moisture and oxidation products. When the circuit is opened (to eliminate a leak), the filter loses its properties and must be replaced. If you leave the old filter, it will quickly become saturated with moisture and block the capillary tube, causing blockage of the system. Indesit in a matter of weeks.
Another common problem is ignoring replacements. filter drier. This element is inexpensive, but its function is critical: it retains moisture and oxidation products. When the circuit is opened (to eliminate a leak), the filter loses its properties and must be replaced. If you leave the old filter, it will quickly become saturated with moisture and block the capillary tube, causing a blockage in the system.
Also, many people forget about oil compatibility. In systems with R134a and R600a, synthetic oils (POE, PAG) are used, which are hygroscopic, that is, they actively absorb moisture from the air. An open system should not “breathe” the atmosphere for more than 15–20 minutes. Prolonged contact with air leads to chemical decomposition of the oil and the formation of varnish deposits inside the compressor.
Is it worth repairing an old refrigerator?
The question of the economic feasibility of repairing old models Indesit (especially those with R12 freon) is quite acute. If the refrigerator is more than 15 years old and has a breakdown of the evaporator inside the chamber (often due to corrosion), then repairs can cost up to 70% of the cost of a new analogue. In such cases, it is easier to consider purchasing modern equipment.
However, if we are talking about a high-quality, middle-aged model with a leak in an accessible place (for example, in a door heating circuit or at visible joints), then replacing freon and eliminating the leak is completely justified. Modern compressors last a long time, and a good one can last another 5–7 years after a quality repair. Indesit can last another 5–7 years after quality repairs.
When making a decision, also take into account energy consumption. Old refrigerators using R12 or early versions of R134a consume significantly more electricity than modern models of the class A+ or A++ isobutane. Sometimes replacing equipment turns out to be more profitable in the long term.
Is it possible to fill a refrigerator with regular car freon?
No, it is not. Car air conditioners run on R134a freon (often), but the pressure and cleanliness requirements in car systems are different from refrigeration systems. In addition, automobile freons may contain additives that are compatible with the rubber seals of the car, but destroy the insulation of the windings of the electric motor of the refrigeration compressor.
Why did the refrigerator begin to freeze worse after refilling?
Most likely, the dosage was violated. Excess freon leads to the fact that the liquid refrigerant does not have time to evaporate and enters the compressor, causing it to knock and overload. Lack of freon reduces productivity. Also, the reason may be an air lock or a drier filter that has not been replaced.
Is it dangerous to breathe freon vapors from an Indesit refrigerator?
In small quantities (if leaked), freons R134a and R600a are not toxic, but displace oxygen. In a confined space this may cause suffocation. R600a is also explosive. R12, upon contact with an open flame, decomposes to form phosgene, a chemical warfare agent, so soldering tubes without bleeding off the gas is prohibited.
How often do you need to change freon in a refrigerator?
Freon has no expiration date and does not require scheduled replacement. If the system is sealed, it operates on the same volume of gas for decades. Replacement is required only in case of a leak or after repair work associated with opening the circuit.