Why doesn t the car air conditioner cool down? What should I do?

Hello, there are many possible reasons why the car air conditioner is not cooling, which can be roughly summarized as:1The air conditioner was broken. 2.The air conditioner is not cooling due to a power outage. 3.The air conditioner is automatically identified and stopped by the thermostat.

The specific inspection methods are:

Check the compressor belt: if the belt is too loose, it should be adjusted, otherwise it is easy to make the air conditioning system poor refrigeration. Inspect the air conditioning system hose fittings for oil stains. If a leak is found, go to the maintenance office in time to solve it.

Clean the condenser: Because the surface of the car condenser is cleaned, it is easy to dissipate heat energy to the outside world. Regular cleaning of the condenser surface can greatly improve the cooling effect of the air conditioning system.

Check the refrigerant level height: Check the refrigerant level height. The glass peephole is usually installed on the lid of the dryer to operate the motor and air conditioning system to observe the flow of refrigerant through the glass peephole.

If the air conditioner is working properly, you can see the clear refrigerant flowing through the peephole, and occasionally there are some small bubbles at high temperatures, and small bubbles can be seen when the air conditioning system is turned off.

Sufficient refrigerant: It can be measured by sensing the temperature difference between the inlet and outlet lines of the dryer or by measuring it by a manifold pressure gauge.

Hope it helps!

1.There are many reasons why the car air conditioner is not cold, such as the lack of refrigerant fluorine, the air conditioning filter is too dirty, the evaporation box is too dirty, the condenser is too dirty, and the air conditioning system is malfunctioning, which will cause the car air conditioner to not be cold when it is refrigerated. It is recommended that the owner go to the repair point for inspection and processing in time.

2.The car air conditioner is not cool should be checked and solved in this way: first, check whether the compressor is still working, if it is not working, then check whether it has been broken, if it is broken, you must replace it with a new compressor.

3.Secondly, check the refrigeration pipes to see if they have leaked or damaged, and if they are broken, they need to be replaced.

4.Third, it is necessary to detect whether there is still a refrigerant. Because the snow is a refrigerant, it may be lost due to various reasons after being used for a long time, so it is necessary to test whether there is still refrigerant, and if not, add refrigerant.

4. Clean and replace the cabin air filter. The filter will have impurities after being used for a long time, so it should also be cleaned up in time, which may also be one of the reasons why the car air conditioner is not cool.

Don't know what year your car is? You can only go to a repair shop to check if the air conditioner is deficient in fluoride? Check the air conditioner air conditioning pipe for fluorine leakage. So these need to be carried out by professionals.

1. Insufficient or too little refrigerant.

The common reason why the car air conditioner does not refrigerate is that the refrigerant is insufficient or too little, which is likely to be caused by a small amount of refrigerant leakage.

Solution: We can observe from the sight glass above the drying tank that when the air conditioner is running normally, if there are continuous and slow bubbles in the sight glass, the surface refrigerant is insufficient. If there is a significant bubble flipping, it means that the refrigerant is seriously insufficient.

If the refrigerant is insufficient or too little, the solution is to add refrigerant, but it should be noted that if it is added from the low pressure side, it is forbidden to pour the refrigerant bottle; If added from the high-pressure side, the engine is not started. The maintenance cost is about 200 yuan.

2. Too much refrigerant.

I didn't expect that too much refrigerant would also cause the air conditioner not to refrigerate. Because the proportion of refrigerant to the volume in the air conditioning system is required. If the proportion is too large, it will affect its heat dissipation, and similarly, if too much cooling oil is added during maintenance, the heat dissipation of the refrigeration system will also decrease.

Solution: Observed from the sight glass above the drying tank. If you can't see a single bubble in the sight glass when the car air conditioner is running, and there are no bubbles after the compressor stops, it must be too much refrigerant.

If there is too much pressurized cooling oil, cloudy air bubbles can be seen in the sight glasses when the air conditioning system is running normally. Of course, if there is too much refrigerant, you can slowly release some of it at the maintenance port on the low-pressure side of the air-conditioning system. The maintenance cost is about 100 yuan.

3. The drive belt of automobile air conditioning compressor is relaxed.

Automobile refrigeration depends on refrigerant, refrigerant transmission depends on air conditioning compressor, and the drive belt is an important moving part to drive air conditioning compressor. If the drive belt is loose, the compressor will slip when working, causing the transmission efficiency to decrease, so that the compressor speed will decrease, and the delivery of compressed refrigerant will decrease, resulting in the automobile air conditioner not being refrigerated. If the compressor drive belt of the automobile air conditioner is too loose, it should be tightened at this time, if it is flipped by hand, it means that the drive belt is too tight, and it should be slightly loosened.

Of course, if the fastening is ineffective or the drive belt has cracks and aging damage, a new drive belt should be replaced. The maintenance cost is about 200 yuan.

4. Unqualified refrigerant and refrigeration oil.

Too much impurity in the refrigerant and freezer will also lead to the blockage of the filter screen of the automobile air conditioner, resulting in the automobile air conditioner not being refrigerated, its resistance will increase, and the refrigerant flowing to the expansion valve will also be reduced, resulting in insufficient cooling capacity. At this time, it is necessary to choose a qualified refrigerant for maintenance, and a qualified refrigerant plays a key role in automotive air conditioning. The maintenance cost is about 300-500 yuan.

5. There is water infiltration in the refrigeration system.

If there is water infiltration in the refrigeration system of the automobile air conditioner and the refrigeration is insufficient or not refrigerated, if this is the reason, then it is necessary to replace the desiccant or drying tank in the automobile air conditioner, and at the same time, re-vacuum the system and re-inject the appropriate amount of refrigerant. The maintenance cost is about 300-500 yuan.

In addition to these reasons, there are other possibilities for the car air conditioner not to be cooled, if the owner is not sure what is causing it, it is recommended to go to a professional repair shop for maintenance.

The reasons for the non-refrigeration of automobile air conditioners may be: insufficient refrigerant, serious blockage of air conditioning filters, excessive debris attached to the surface of the evaporation box of air conditioners, excessive dirt of the condenser, leakage of refrigerant, and damage to the compressor. The workaround is:

It is recommended to go to the maintenance plant to check whether the pressure of the high-pressure and low-pressure pipelines of the air conditioner is normal, whether the refrigerant is sufficient, whether the air conditioner filter is blocked, and whether the compressor is in working condition.

If the air conditioner filter is seriously blocked, it will seriously affect the air volume of the air conditioner, and the air volume gear will be opened very high, but the air intake volume is too small, resulting in insufficient air conditioning refrigeration, and it is good to replace the air conditioner filter. If there are too many debris attached to the surface of the evaporation box of the air conditioner, it will also affect the refrigeration effect, and it is necessary to find a repair shop for cleaning.

The main function of the air conditioning condenser is to dissipate heat, and there are often dirt such as catkins accumulated on the condenser, which will form the phenomenon that the engine temperature is too high or the air conditioning is poor.

<>1. The heat dissipation of the condenser of the automobile air conditioner is not good.

The automotive condenser is a heat dissipation device, which undertakes the task of dissipating the heat of the entire system to the outside, and it can dissipate a large amount of heat from the extremity of the compressor during the compression process into the outside space. The car cooling fan is a suction type, and after a long time, it will cover the surface of the condenser, so if the owner wants to drive comfortably in summer, he must remember to check whether there is dust between the condenser and the water tank from time to time, and he can use high-pressure air to clean it.

2. The cooling fan does not rotate.

The cooling fan is located behind the radiator, and when the fan is spinning, it draws air through the radiator, thereby enhancing the heat dissipation effect of the radiator and speeding up the cooling rate of the coolant. The rotation of a car's cooling fan is affected by the water temperature sensor and the current inside the transformer. If the car is not cold, it is more common to see if the cooling wind family is not turning or not.

3. Air conditioning refrigerant leakage.

The ducts of automobile air conditioners are complex, and refrigerant leakage will occur if there are gaps in any joints or small holes in the pipes. The condenser inside the air conditioner is too dirty and needs to be cleaned in time, many people are usually too lazy to clean the condenser, and the dust accumulation on it is getting thicker and thicker, resulting in poor heat dissipation and seriously affecting the refrigeration effect.

It is not difficult to clean the condenser, when washing the car at home, prepare a bucket of water first, scrub it carefully with a rag, and mainly remove the dust stains on it. There is also a blockage of the filter of the air conditioner, resulting in the car air conditioner is not cooling, then it is necessary to clean the filter of the air conditioner, if the filter is seriously damaged or the service life is up, directly replace it with a new one.

The car air conditioner is not refrigerated, which is nothing more than these 3 reasons, and it is much cooler to repair it yourself without spending money in vain.

1. The car condenser is too dirty.

The condenser is a part of the car air conditioning system, and its main function is to dissipate heat. If the environment is bad, dust and other dirt can easily adhere to it, resulting in poor heat dissipation performance, which will lead to a decrease in the cooling efficiency of the air conditioner. If the car air conditioner is not refrigerated due to the condenser being too dirty, the solution is very simple, just rinse it with water.

You can clean it by yourself, at zero cost and at no cost of a penny.

2. The car air conditioning filter has not been replaced for a long time.

If the car air conditioning filter is covered with dust, the air conditioning volume will be smaller, and the corresponding cold air will be reduced a lot, which will affect the refrigeration effect of the car, and if the air conditioning filter is not replaced for a long time, it will also pollute the air in the car and increase the noise in the car. Therefore, the air conditioning filter of the car should be replaced regularly.

3. Automobile air conditioners lack refrigerant.

The lack of refrigerant is also an important reason why the car air conditioner is not refrigerated, this is very easy to understand, the air conditioner in our home is the same, if the lack of refrigerant, the air conditioner can not be refrigerated. Once it is judged that the air conditioner is not refrigerated due to the lack of refrigerant, you only need to go to the car repair shop to add the corresponding refrigerant to solve the problem of not refrigerating. However, as long as you maintain the car regularly, this lack of refrigerant is generally not easy to occur, unless the car is hit and leaks.

When driving in summer, air conditioning is an indispensable configuration for car owners, if there is no air conditioning, then it is really hot. But there are times when the air conditioner also strikes, such as not cooling. So what is the reason why the car air conditioner is not cooling?

What should I do if the car air conditioner is not refrigerated?

1. The refrigerant of air conditioning is not enough. If you want to refrigerate the car air conditioner, then there must be a refrigerant in it, if the refrigerant is not enough, then the air conditioner cannot operate normally, so you can check whether the car air conditioner refrigerant is not enough. If you find that it is not enough, you can pour it slightly.

2. The air conditioner filter is blocked. If the air conditioner filter is blocked, it is likely to cause the air intake of the air conditioning system to be particularly unblocked, which will lead to a decrease in the air outlet of the air conditioner, or even the inability to refrigerate. Therefore, it is recommended that all car owners check the air conditioning filter, and if they find that it has been blocked, then replace it with a new filter.

Reasons and solutions for automobile air conditioners not to be cold: 1. Reason 1: Too little refrigerant causes insufficient refrigerant.

Measures: Need to check for leaks and re-vacuum. 2. Reason 2:

The presence of air in the system is also a consequence of insufficient refrigeration: it needs to be re-vacuumed. 3. Reason 3:

The air conditioning system does not dissipate heat well. Action: The tank condenser needs to be cleaned.

4. Reason 4: If the refrigerant is sufficient, the air conditioner still does not refrigerate the hot air at all. Measures:

Consider repairing or replacing the compressor. 5. Reason 5: The cold air cannot enter the cab due to the failure of the air conditioning damper control.

Measures: If it is still not possible to reset the position of the air conditioner damper, it is necessary to repair or replace the damper flap motor. 6. Reason 6: