This section provides a comprehensive list of frequently asked questions with detailed answers to help drivers understand the importance of proper car A/C system maintenance.
Here you can find the answers to some frequently asked questions.
This section will be regularly updated.
If you cannot find the answer, please write an email to: info@elke-ac.com
Here can be many reasons, the most common is an abrupt/too fast opening of the regulating valve.
This operation causes the deterioration of the protection membranes inside the regulator.
For a correct use of the regulator, make sure it is fully turned clockwise (closed) before being screwed onto the cylinder.
After connecting the cylinder, slowly turn the knob clockwise to allow the gas to flow.
It depends on the pressure used, and on the size of the system and the bottle.
With an average pressure of 8/10 bars, you can do up to 3 services with
the 1 L cylinder and up to 6 services with the 2.2 L cylinder.
Below you can find some simple operations to determine the cause.
OPERATION n°1
The sensor has a limited functioning life, and gets consumed with use. Replace it to restore the correct functioning of the detector.
OPERATION n°2
The protection of the detector can get dirty or obstructed, preventing it from working correctly.
By only replacing the protection, the leak detector should work properly again.
OPERATION n°3
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Once the leak detector is switched on, it checks and records the concentration of gas present at that moment in the air.
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Then, it will only indicate the concentrations that are higher than the first ones.
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Hence, do not directly point the detector on the leak when turning it on, but rather wait 45/60 seconds to proceed.
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After the first detection, remove the leak detector from the area of interest and wait a few seconds before proceeding with a second, more accurate, detection.
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Please, remember that it is important not to use the detector in a gas saturated environment.
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A complete inspection is recommended every 1–2 years, even if the air conditioning appears to work properly.
Over time, the system naturally loses small amounts of refrigerant and the compressor oil can degrade, reducing efficiency and increasing the risk of failures.
There is no fixed interval, but on average a recharge is needed every 2 years.
A refrigerant loss of 5–10% per year is considered normal.
If cooling performance drops, it is essential to check for leaks before recharging.
The most common causes include:
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low refrigerant level
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clogged cabin air filter
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dirty or damaged condenser
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worn or faulty compressor
A professional diagnostic check helps identify the issue accurately and avoids unnecessary repairs.
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Yes. The cabin air filter protects the interior from dust, pollen, and pollutants.
It should be replaced once a year or every 15,000–20,000 km.
A dirty filter restricts airflow and reduces air quality inside the vehicle.
Bad smells are usually caused by bacteria and mold growth on the evaporator due to moisture buildup.
Regular maintenance and sanitization help keep the system clean and hygienic.
A/C sanitization is a treatment that removes bacteria, fungi, and allergens from the system.
It is recommended once a year, especially before summer or if unpleasant odors are present.
No. Metallic noises, squealing, or knocking sounds may indicate issues with the compressor, drive belt, or compressor clutch.
A prompt inspection is recommended to prevent serious damage.
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Vehicles manufactured up to around 2017 typically use R134a
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Newer vehicles generally use R1234yf, a more environmentally friendly refrigerant
Using the correct refrigerant is essential for system safety and performance.
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Vehicles manufactured up to around 2017 typically use R134a
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Newer vehicles generally use R1234yf, a more environmentally friendly refrigerant
Using the correct refrigerant is essential for system safety and performance.
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