The air conditioning and refrigeration are not powerful, whether the displacement is not enough or t

The poor refrigeration effect of air conditioning has nothing to do with the displacement of the car, but is related to the following conditions:

Lack of freon, go to check to see if there is a leak, you can drip some water at the pipe joint of the car, bubbles will generally appear in the leakage, find the leak to repair the place, and then go to the car repair shop or maintenance shop to add freon.

The filter is too dirty, you can try to find the bypass valve on the filter element base of the filter, when the pressure difference between the two sides of the valve reaches a certain value, it can be opened, generally the oil flows into the main oil pipeline through this pipeline, and other related parts are lubricated with special lubricant for automobiles, so that it is almost the same.

If the antifreeze is not enough, you can ask the people nearby to see if there is a 4S shop or car repair shop, and you can only find a professional car repairer to see.

If the doors and windows of the car are not closed properly, carefully check whether the doors and windows of your car are closed or not, and if they are closed, they are other problems.

The air conditioning core is too old, if the air conditioning core of your car has used a lot of time, it may be a problem with the air conditioning core, and you will install it to buy an air conditioning core and install it yourself, and you will only find a car maintenance shop and car repair shop.

The pressure of the refrigerant is too large, so check the pressure value of the refrigerant with a pressure gauge and clean the condenser by the way.

If the refrigerant is not enough, you can use the pressure gauge to check the lower pressure value in the case of landing, and carefully see whether the refrigerator is normal, if not, the refrigerant is not enough, and the cold air is not very cold or windy if the refrigerant is not enough. If the refrigerant is not enough, find a car repair shop to add it.

It's also possible that there is a problem with the air conditioner or that you need to add refrigerant.

1. Too much or too little refrigerant.

In the air conditioning system, the proportion of refrigerant is a certain requirement, too much or too little will affect the cooling effect of the air conditioner. If there is too little refrigerant, the refrigerant injected into the evaporator by the expansion valve will be reduced, and then the refrigerant cooling capacity will also decrease. Conversely, too much refrigerant will affect its heat dissipation, because the more heat dissipated, the greater the cooling capacity.

Second, the filter screen is blocked.

If you don't take it out for a long time to clean or replace, the accumulated impurities will block the filter, which will cause the air conditioner to come out and the refrigeration effect will decline.

The working principle of the automotive air conditioning and refrigeration system.

When the compressor is working, the compressor is poured into the low-temperature and low-pressure gaseous refrigerant coming out of the evaporator, and after compression, the temperature and pressure of the refrigerant are increased, and it is fed into the condenser. In the condenser, a high-temperature and high-pressure gaseous refrigerant transfers heat to the outside air passing through the condenser and liquefies it into a liquid.

As the liquid refrigerant flows through the throttling device, the temperature and pressure decrease and enter the evaporator. In the evaporator, a liquid refrigerant at low temperature and low pressure absorbs the heat of the air in the vehicle passing through the evaporator and evaporates into gas. The gas is then sucked in by the compressor for the next cycle.

If the refrigeration of the automobile air conditioner is insufficient or not refrigerated, it is possible that the R134A refrigerant and the refrigeration oil contain too many impurities and micro-blockage to cause insufficient refrigeration capacity. It is also commonly referred to as dirty blockage, and the filter screen, expansion valve, condenser, evaporator, high and low pressure pipe, etc. of the filter drier should be checked for debris blockage.

Working principle: 1. Compression process: The compressor sucks in the low-temperature and low-pressure refrigerant gas at the outlet of the evaporator, compresses it into high-temperature and high-pressure gas and discharges it out of the compressor.

2. Heat dissipation process: the superheated refrigerant gas at high temperature and high pressure enters the condenser, and due to the decrease of pressure and temperature, the refrigerant gas condenses into liquid and discharges a large amount of heat.

A modern air conditioning system consists of a refrigeration system, a heating system, a ventilation and air purification device, and a control system

1. Ventilation system: its function is to ensure indoor ventilation when the car is driving, that is, to continuously rush fresh air into the car room to drive away dust, carbon dioxide and harmful gases from the engine. During the cold winter months, fresh air should also be heated to ensure that the indoor temperature is suitable.

2. Heating system: its function is to heat the air in the car room or the fresh air entering the car room from the outside to achieve the purpose of heating and dehumidification.

3. Refrigeration system: its function is to reduce the temperature in the car when the ambient temperature outside the car is high, so that passengers feel cool and comfortable.

Car air conditioner is not very cold for the following reasons:

1. The condenser is too dirty;

2. The air filter element is too dirty;

3. The air conditioner is in long-term external circulation mode;

4. The belt is aging.

Solution: 1. Whether there is refrigerant in the system, if not, it needs to be pressurized to check the leakage, and it can be sufficient;

2. If there is a refrigerant, check whether the compressor is working;

3. Clean the condenser;

4. Replace the air conditioner filter. Automobile air conditioning is a device that realizes refrigeration, heating, ventilation and air purification of the air in the cabin, which can provide a comfortable riding environment for passengers, reduce the fatigue intensity of the driver, and improve driving safety.

Tips for using car air conditioners.

There is also a button for the air conditioner in the car is C, which can eliminate the circulation of air inside and outside the car. Especially in summer, the effect of rapid cooling after opening the internal circulation is very obvious.

However, the use of internal circulation is also particular, it will be used when the air conditioning is just turned on, so that the temperature in the car can reach the specified temperature as soon as possible, but because the air in the car is not circulated for a long time, it may cause dizziness and chest tightness and other hypoxic conditions in the car, so after opening for a period of time, the internal circulation function can be turned off to let the air in the car circulate a little, and then turn it on.

Car air conditioning is not cold enough is generally a lack of freon, freon is the most important element of car air conditioning refrigeration, that is, the core of the operation of car air conditioning, only sufficient freon will make the air conditioner play a role, the specific operation steps of adding car freon are as follows:

1. Open the door on this side of the cab.

2. Pull the hood switch at the left position.

3. Lift the hood of the engine upwards.

Fourth, use the support rod to support the engine hood, to ensure that the support is firm, to avoid the danger of operation.

5. Supplement the provisions of Freon to the air conditioning system.

Generally the problem of refrigerants (freons): 1Refrigerant leaks, resulting in insufficient refrigeration capacity and needs to be refilled.

2.The refrigerant filled with automobile air conditioner is generally R134A, and a small number of imported vehicles use other types of refrigerant, which is not discussed here. There are many inferior R134A on the market, and the purity is not enough or other cheap refrigerants are used to pass off R134A, which will cause the refrigeration effect of automobile air conditioning to deteriorate.

Filling with inferior refrigerant can also lead to damage to the car's air conditioning compressor, corrosion of the air conditioning line, and other problems. Therefore, try to use the refrigerant of a regular manufacturer, and pay attention to the brand of refrigerant used by the master when repairing the car in the auto repair shop or doing maintenance in the 4S shop.

Another possibility is a mechanical failure of the air conditioner.

Our factory specializes in the production of automotive air conditioning refrigerant, if you have similar problems, please consult.

Air conditioning has unconsciously become a necessity of our life, the hot summer is coming, this issue will share with you the reasons why the car air conditioner is not cooling, let's take a look!

1.Insufficient or too little refrigerant is often caused by a refrigerant leak.

2.Too much refrigerant will also cause the air conditioner not to refrigerate, because the proportion of refrigerant in the volume of the air conditioning system is required, if too much, it will affect its heat dissipation.

3.The drive belt is loose, and the compressor will slip when working, resulting in a decrease in transmission efficiency.

4.There is water infiltration in the refrigeration system, resulting in insufficient or no refrigeration.

1.Refrigerant leaks. (It is manifested that the internal and external machines are working, and the compressor is also working, but it is ineffective).

2.The compressor capacitor is damaged or defective, causing the compressor to not work. (The phenomenon is similar to the above, but the compressor does not rotate and overheats).

3.The resistance value of the temperature sensing head at room temperature changes, resulting in the air conditioner not working. (The phenomenon is the same as when the air conditioner stops after reaching the set temperature).

4.Bad remote control or bad air conditioner receiver. (Manifested as no reflection of the air conditioner when it is turned on, or it does not work from time to time).

Step 5Four-way valve (single chiller does not have this failure) or compressor high and low pressure string, air conditioning works but has no effect. (The phenomenon is the same as the first one).

Step 6The failure of the control panel of the internal or external unit of the air conditioner causes the air conditioner to not be refrigerated. (Manifested as no reflection when turned on or the air conditioner is messed up).

7.The power supply of the air conditioner is reversed. (This failure occurs in a small number of air conditioners, usually at the time of installation).

8.The internal or external fan is damaged (the capacitor is more broken), and the external fan is damaged by the high exhaust temperature or high voltage protection. If the fan of the internal unit is bad, the internal machine is frosty, the external unit has been working, and the internal machine will condense ).

There is little refrigerant or there is moisture infiltration in the air conditioning and refrigeration system.

1. The on-board air conditioner is composed of compressors, condensers, throttling elements, evaporators, fans and necessary control components, which are used to adjust the temperature and humidity in the car and provide a comfortable environment for the occupants. Too little refrigerant will make the condensing system insufficient to supply the attitude, and there is no refrigerant to act as a refrigeration medium, resulting in the air conditioner not being cold enough.

This can be solved by adding a refrigerant.

2. The second is that there is water infiltration in air conditioning and refrigeration. In the automotive air conditioning system, the systems are cooled in a dry state, and when moisture penetrates, the refrigerant cannot be converted into cold air and blown out, resulting in the air conditioner not being cold enough. This problem can be solved by drying the moisture that has penetrated in.

1. Reason: Too little refrigerant causes insufficient fiber refrigerant. Solution: It is necessary to check the leakage and re-vacuum the judgment tape.

2. Reason: The presence of air in the system also leads to insufficient refrigeration. Solution: Need to re-vacuum.

3. Reason: The air conditioning system does not dissipate heat well. Sun Chong's solution: the water tank condenser needs to be cleaned.

4. Reason: If the refrigerant is sufficient, the air conditioner is still not refrigerated at all, and hot air is produced. Solution: Consider repairing or replacing the compressor.

Reasons why the air conditioning in the car is not cool:

1. The air conditioning pipeline is not smooth.

The air conditioning temperature has been adjusted to the lowest and the fan has been turned on to the maximum, but the temperature in the cabin has not been able to drop for a long time. A similar situation is likely to be caused by insufficient air conditioning due to poor air conditioning lines.

The solution is to clean the air conditioner condenser to avoid dust affecting heat dissipation; Check (replace) the air-conditioning filter to ensure that the air-conditioning pipeline is unobstructed. Turn off the external circulation of the air conditioner to avoid the external heat and no air from entering the cabin with the cold air, which will affect the refrigeration effect.

2. Refrigerant leakage.

During the drive, the cooling effect of the air conditioner, which was originally working well, suddenly weakened or disappeared. When this happens, it is likely that the aircon refrigerant is leaking.

The solution is to check whether there are small gaps in the air conditioning pipeline, especially at the pipe joint. After refilling the refrigerant, do not turn on the air conditioner in a hurry, and let it stand for 12 hours before testing whether the refrigerant is leaking.

3. Air conditioning compressor failure.

When running the air conditioner, it was found that the indicator light of the air switch was on, but the air conditioner was not working. When this happens, it is most likely due to a malfunction of the air conditioner compressor.

The solution is to check whether the belt connected to the compressor is aging or loose. The air conditioning compressor is generally located at the bottom of the engine compartment, so when driving on a daily basis, care should be taken to avoid collisions.

Causes and solutions for car air conditioners not to be cool:1. There is no refrigerant in the compressor, and the refrigerant is added to the code pants;

3. The solenoid valve is not reversed: detect whether the solenoid valve is normal, and replace the solenoid valve if it is not on/off;

4. System failure: check whether the capillary is dirty, oil or ice, if the air conditioner is not refrigerated, it is generally ice blockage, if the nitrogen blowing pipeline is blown out of the stolen goods or not smooth, it means that the dirty blockage or oil blockage, such as the pure cherry fruit open system without refrigerant, it means that the refrigerant leakage is delayed, check the leakage point maintenance;

5. Compressor failure: the whole machine is not refrigerated, open the system, check whether there is enough refrigerant spray, determine whether it is refrigerant leakage, no leakage, and check whether the compressor is not exhausted.

The car air conditioner is not too cool, because the refrigerant is not enough or the air filter is too dirty.

The air conditioner lacks refrigerant, that is, freon, the refrigeration function of the air conditioner will be affected, and the natural refrigeration effect will not be good.

If the air conditioning filter of the car is too dirty, it will affect the air intake volume of the air conditioner. If the air conditioning filter is not replaced for a long time, there will be foreign objects on the upper surface, and even the air conditioning filter will be blocked, and the owner needs to clean or replace the air conditioning filter.

Air conditioning can be said to be an indispensable equipment on today's cars, but there are not a few problems with air conditioning, it is understood that the most common problem of air conditioning is not cold enough, not refrigerated, damaged and so on. In fact, most people have encountered the problem that the air conditioner is not cold enough, and some netizens have reported that they have repaired the air conditioner four times a year, and they really can't accept it in summer, and they have the urge to change the car directly.