How to Ddentify the Lack of Eefrigerant in the Car Air Conditioner?

If the air conditioner does not cool in summer, this is a more troublesome thing for car owners and friends. Of course, there are many reasons for this phenomenon. But the most common reason is probably the lack of refrigerant. So for the refrigerant, how often should our friends who use the car add it? How are we supposed to judge?

After the air conditioner is normally turned on for a period of time, the wind blowing on the body feels very cool, and can quickly reach the set temperature. The outdoor compressor can work like a refrigerator and stop for a while, which indicates that it is normal. Otherwise, refrigerant may be required.

Use a thermometer to measure the temperature difference between the air inlet and air outlet of the indoor unit. The difference is above 8°C, which is a normal temperature difference. The larger the temperature difference, the better the air conditioner works. The best can reach about 15 ℃. And the difference is lower than 8 ℃ may need to add refrigerant. After more than ten minutes of starting the machine, open the panel of the indoor unit, and you should see that the parts of the copper tube of the evaporator that are covered with aluminum sheets for heat exchange are evenly covered with condensed water, which is normal. When the air humidity is high, it is more, and vice versa. If half of them are not, it may be a lack of refrigerant. Such as local frost or ice is not normal.

Users who have used it for more than half a year can check whether there are obvious signs of oil leakage at the pipe joints of the indoor unit and the valves of the outdoor unit. If there is obvious oil leakage, it indicates that the machine is leaking. Because oil and fluorine are mutually soluble, oil leaks will leak fluorine, and fluorine leaks will leak oil. When the air conditioner is running normally and continuously, there are continuous bubbles in the glass hole, indicating that the amount of fluorine is insufficient and needs to be added. When the air conditioner is running normally and continuously, there are no air bubbles in the glass hole, and when the air conditioner is stopped, no short-term air bubbles appear, indicating that the amount of fluorine is too much and needs to be discharged. When the air conditioner is running normally and continuously, there are no air bubbles in the glass hole. When the air conditioner stops, there will be short-term air bubbles, indicating that the amount of fluorine is normal.

If the owner does not find this glass viewing hole, there is a simple way to roughly judge. Open the hood of the car and check whether there is any oil stain on the air conditioning system connector. If there is, it should be a lack of fluorine. Before adding fluoridation to the car air conditioner, it is necessary to conduct an overall inspection of the air conditioning system of the vehicle to ensure that there is no leakage point in the air conditioning equipment before fluoridation can be added.