What causes poor refrigeration in car air conditioning?

It is a faulty part of the air conditioning system. For example, if the compressor is damaged, the expansion valve is damaged, etc., you need to go to the 4S shop for inspection and repair. If your car's air conditioner is not strong in summer, and you can't check the problem, go to the repair shop and let a professional maintenance master help you test it, and give you a cool summer.

If the air conditioning system is not faulty, it is caused by too much dust in the evaporation box, and the air conditioner needs to be cleaned. Generally, the air conditioner core is recommended to be replaced twice a year, one in winter and one in summer, and the air conditioner is cleaned once a year or two years.

Speaking of personal experience, when I encountered this situation, I first checked that the air conditioning system was not faulty, and finally because of the excessive dust in the evaporation box, the air conditioner needed to be cleaned, and I went directly to the 4S store to clean the air conditioner, and the maintenance staff told me that the general air conditioning core is recommended to replace two a year, one in winter and one in summer, and clean the air conditioner once a year or two years, according to the frequency of use, it needs to be cleaned in summer, and there is no need to clean the heater in winter.

The poor refrigeration effect of automobile air conditioning is mostly caused by refrigerant leakage. You check if his pressure reaches four pressures, and if not, add some smartphones to reach four to four pressures.

A few days ago, my car encountered this kind of poor refrigeration effect, I checked it first, I really had no way I went to the auto repair shop, and later learned that if you want to check the poor refrigeration ** failure, you must first determine whether it is the blockage of the air conditioning core, resulting in a small air outlet, and there are many cases in this case. The air coolness is enough, but the air volume is not enough, it will feel that the refrigeration is insufficient, and it can be solved by replacing the air conditioning core.

Refrigerant is missing. If the refrigeration dose of the air conditioning system pipeline is insufficient, the pressure decreases, and the heat taken away becomes smaller, resulting in insufficient refrigeration. If there is no refrigeration at all, then it will not be refrigerated at all. The refrigerant needs to be refilled and the leak point should be checked.

The refrigeration effect is poor, first to determine whether it is caused by the blockage of the air conditioner core, resulting in a small air outlet, and there are many cases in this case. If the air outlet is cool enough, but the air volume is not enough, it will feel that the cooling is insufficient, and it can be solved by replacing the air conditioning core.

Since the birth of freon, this chemical that can effectively absorb heat has been widely used as a refrigerant and plays an important role in air conditioning and other fields.

The heat dissipation effect of the condenser is not good, the refrigerant with heat is a high-temperature and high-pressure gas after being compressed by the compressor, and it needs to rely on the cooling of the condenser and the pressure reduction of the expansion valve to become a liquid refrigerant with low pressure and low temperature, and finally reach the evaporator to absorb the heat of the compartment and evaporate.

The condenser is also a reason why the air conditioner is not cool, the condenser is in front of the water tank, the two are next to each other, and it is used to dissipate heat from the refrigerant. It is often clogged with dirt such as some cotton wool, resulting in poor heat dissipation, which in turn leads to a decrease in the cooling effect. When washing the car, you can solve it by rinsing it with a water gun, which is very simple.

There are many factors such as compressors, pipelines, evaporation tanks, condensers, refrigerants, and electronic and mechanical control systems, all of which may cause poor refrigeration effects and design problems.

Freon lines are blocked, and in automotive air conditioning systems, there are a large number of pipes connecting the condenser to the evaporator, and a large amount of refrigerant flows in these lines.

The reasons for the poor refrigeration effect of automobile air conditioners are as follows:1. The first type: if you lack freon, go to a car repair shop or maintenance shop to add freon.

The second type: if the antifreeze is not enough, you can go to a car repair shop or a 4S shop to find a professional person to deal with it.

2. The third type: the aging of the air conditioning core, if you can deal with it, you can buy and install it in **. If you can't handle it yourself, you can find a car repair shop or a 4S shop.

3. Fourth: the refrigerant pressure is large, check the refrigerant pressure value with a pressure gauge, and clean the condenser.

<> "What is the reason for the poor refrigeration effect of automobile air conditioning?

First, the water tank and condenser are too dirty, resulting in poor heat dissipation effect of the condenser, and cleaning directly from the outside with a water gun has almost no effect.

The correct cleaning method needs to find the gap between the water tank and the condenser, blow the catkins in the middle with compressed air, and then use the high-pressure water gun of the car wash to flush it again, the pressure of the water gun should not be adjusted too much, and the distance of 30-50 cm should be strafed back and forth with a fan mode until the water flowing down becomes clear.

It should be noted that most cars only need to remove the upper cover of the water tank, or the lower guard plate can be effectively cleaned, and a small number of models need to remove the front bumper, and even loosen the water tank frame to find the interlayer of the box and the condenser, in order to carry out effective cleaning.

Second, use the air conditioning pressure gauge to check whether the earing pressure of the air conditioning pipe is normal, and share the mantra of the air conditioning repair summary with you. Low pressure high, high pressure low, replace the compressor. If the pressure is double, check that there is a problem with the exhaust or heat dissipation. The pressure is double low and the refrigerant is added or there may be a blockage.

Third, it is to turn on the air conditioner to produce cold air, but the air volume is very small, you need to check whether the air conditioner filter is blocked or whether the speed control module of the fan is too worn.

What are the common fault points of poor air conditioning refrigeration effect?

1.The refrigerant in the air conditioning system leaks out, resulting in no refrigerant, so the air conditioner is not cooling.

Solution: You can check whether the pipes, air conditioning pumps, condensers, evaporation tanks and other parts in the air conditioning system are damaged and cause refrigerant leakage. There is also an inspection method to add fluorescent agent at the same time as adding refrigerant, the vehicle uses a special fluorescent lamp to check the air conditioning system after a week, if there is a leak point will glow, it means that the part is damaged.

2.Damage to the inside of the air conditioner pump, such as damage to the piston ring inside the air conditioner pump, damage to the clutch suction cup, etc. As a result, the air conditioning pump cannot work and thus cannot start the refrigeration effect, and the general air conditioning pump will be damaged and abnormal noise.

Solution: Check the air conditioning pump, if it is damaged, you need to replace the air conditioning pump.

The reasons for the poor refrigeration effect of automobile air conditioning are: 1. The air conditioning filter is dirty and needs to be cleaned up in time; 2. Lack of freon in the air conditioning system; 3. The condenser of the water tank is dirty; 4. The air conditioner flap is damaged.

1. Refrigerant leakage: If the mold making efficiency of the air conditioner decreases, you can check whether it is a refrigerant leak or needs to be replaced.

2. The air conditioning filter is too dirty: The blockage of the air conditioning filter will not only block the discharge of hot air in the car, but also reduce the cold air entering the car, which will not only affect the refrigeration but also bring a lot of low-quality air to the car.

3. Air conditioning duct cleaning: If you don't clean up, these harmful substances will circulate in the car and take turns to infringe on the human body, so you should clean and sterilize the air conditioning duct regularly.

1. Refrigerant leakage The scientific name of refrigerant is air conditioning refrigerant, the reason why air conditioning can be refrigerated is because the refrigerant plays a huge role in it, if the refrigeration efficiency of the air conditioner decreases, you can check whether it is a refrigerant leak or needs to be replaced.

Second, the air conditioning filter is dirty, the air conditioning filter is used to filter the dust in the air, which can ensure that the air in the car is not polluted by the outside world. However, if you do not pay attention to cleaning and replacing the air conditioning filter, it will cause the filter element to be blocked, and the blockage of the air conditioning filter will not only block the hot air in the car, but also reduce the cold air entering the car, which will not only affect the refrigeration but also bring a lot of low-quality air to the car.

3. Air conditioning duct cleaningBecause the air conditioning duct can circulate the air in the car, it is necessary to pay attention to avoid the air conditioning duct being blocked. Moreover, after a long time in the air conditioning duct, a lot of bacteria, dust and viruses will accumulate. If you don't clean up, these harmful substances will circulate in the car and take turns to invade the human body, so it is necessary to clean and sterilize the air conditioning ducts regularly.

Photo by Pacific Motors Q&A (Beast).