The car air conditioner is not cool. How to solve this problem? How to solve the problem depends on

How to solve the problem depends on what causes the air conditioner to be cold. Different reasons have different solutions. First of all, we need to know that there are many reasons why the air conditioner is not cool. Only by finding the root cause of the fault can we solve it "according to the case". Summer is coming soon, let me tell you about the cold air conditioning in cars and the targeted solutions!

Car air conditioning is not cool and solutions

Lack of refrigerant: the so-called refrigerant is Freon, also known as snow. At present, the type of refrigerant commonly used in cars on the market is generally R-134a. In fact, the refrigeration process of automobile air conditioner is essentially the result of the continuous cycle of Freon. If the vehicle is short of refrigerant, the refrigeration effect of the whole system will decline, and even the air conditioner will not cool. The solution is to replenish the refrigerant or refill the refrigerant. However, before filling refrigerant, it is necessary to check whether there is leakage in the air conditioning system. If you do not check and fill it hastily, it will inevitably lead to the loss of refrigerant again.

Compressor does not work: automobile compressor is the beginning of the whole refrigeration system, and is also a very important part. Its function is to compress the refrigerant to increase its temperature and pressure. If the compressor does not work, it is bound to cause the condenser, expansion valve, evaporation tank and other subsequent actuators to work improperly. There are many reasons why the compressor does not work, such as damaged compressor relay, blown fuse, virtual wiring harness and damaged compressor itself. Therefore, the solution to compressor failure depends on the specific situation.

Air conditioning pressure sensor misalignment: This sensor is mainly used to detect the pressure in the air conditioning pipeline, prevent the refrigeration system from working under the limit refrigerant pipeline pressure, and help control the speed of the engine cooling fan. If the sensor is damaged and out of alignment, the signal of too high or too low pressure will be misreported, and the compressor will not work normally. Because if the pressure in the air conditioning pipeline is too high, the compressor will enter the protection mode and will not work; If the pressure in the air conditioning pipeline is too low, the compressor opening condition cannot be reached, and the vehicle's air conditioning will not be cold. The solution is to replace the air conditioning pressure sensor. However, before replacing the sensor, it is also necessary to detect whether the harness of the sensor has a fault, because the false connection and open circuit of the harness can also lead to misjudgment and misalignment of the sensor.

The condenser is dirty: as mentioned above, the compressor compresses the refrigerant into high-temperature and high-pressure gas. Then the next step is to come to the condenser. The high-temperature and high-pressure refrigerant releases heat in the condenser and condenses from gas to liquid. Therefore, if the condenser is dirty, it will inevitably cause the cooling of the refrigerant to drop, resulting in the failure of the air conditioner not cool. The solution is to clean the dust, catkins, flying insects and other dirt on the condenser. The best way is to remove the condenser for cleaning, and then use the water gun for washing the car. Just turn down the water pressure, or it will easily damage the condenser and cause refrigerant leakage.

Well, the above are the four most common reasons and solutions for the cooling of car air conditioners. Of course, the above four fault reasons do not represent all of them. I hope they can help you and reduce your daily car worries.