How to repair the car air conditioner with a small blowing volume

1: See whether the voltage at the blower joint position is normal, and if it is normal, the line problem is basically ruled out. (See if the electricity is normal).

2:1 to 4 gears of the blower rotates, whether the noise is normal, see if the four is not the speed regulating resistor, the air volume switch is broken. (See if the switch itself is damaged).

3: Connect the electricity of the battery to the fan separately to see if it works normally. (Check whether the fan itself is damaged, pay attention to whether the battery voltage and the fan voltage are consistent).

4. Remove the filter of the air inlet of the blower to see if it is blocked by leaves, resulting in no air intake. (See if there is any foreign object blocking the air inlet or outlet of the fan).

4: The blowing mode should be right!!

Check whether the fan is working normally, select different air volume switches and judge according to the sound. If the fan is working properly, replace the air filter in the air duct of the air conditioner.

Possible causes: 1. It may be a problem with the blower, short circuit or too little power.

2. If there is no problem with the fan, the condenser is blocked, and when the wind direction is selected to blow the front windshield, the wind blowing the carriage is very small.

3. The wind impeller is directly installed on the fan, and the fan has no force, only the fan is replaced, unless the fan blade has the resistance to touch the shell, there will also be the possibility of small wind, so that the wind blade can be adjusted to solve the problem.

Possible Causes:

1. The air duct is blocked or the filter element of the air conditioner evaporation box is blocked.

2. The refrigeration pipe of the air conditioner condenser is seriously frosted and icy, resulting in the cold air being unable to enter the evaporation box and remove the core.

Solution: First, open the dashboard, check whether the filter element of the evaporation box is blocked, if it is blocked, it needs to be replaced, and check whether there is any foreign matter in the air duct.

Second, open the front cover and check whether the refrigeration pipe of the condenser is frosted and icy, if frost and ice, the preheating sensor on the refrigeration pipe needs to be replaced.

If both are fine, then you need to go to the garage for further checking.

Clean the air duct first and look at the fan motor.

Automotive air conditioning device (hereinafter referred to as automobile air conditioner). It is used to adjust and control the temperature, humidity, air cleanliness and air flow in the car compartment in the best state, provide a comfortable riding environment for the occupants, and reduce the fatigue of the journey; Ventilation devices that create good working conditions for drivers and play an important role in ensuring safe driving. It generally includes refrigeration units, heating units and ventilation units.

This kind of combined device makes full use of the limited space inside the car, has a simple structure and is easy to operate, and is an internationally popular modern automobile air conditioning system.

The functions of automatic air conditioning include automatic adjustment of temperature and humidity in the vehicle, automatic control of return and supply air modes, and control of operation mode and air exchange volume. The electronic control unit will make the air conditioning system run automatically according to the settings made by the driver or passengers through the buttons on the air conditioning display control panel, and adjust the air supply temperature and air supply speed in time according to the signals input from various sensors, so that the air environment in the car can be kept in the best condition.

The low air output may be caused by the following reasons; The first step is to check whether the refrigerant is sufficient, which can be measured by sensing the temperature difference between the inlet and outlet lines of the dryer, or by measuring the manifold pressure gauge. Secondly, the dust and dirt in the air outlet and cab should be cleaned frequently. This not only contributes to the aesthetics of the car, but also to the health of the driver and passengers.

Third, regularly check whether the liquid level height of the refrigerant in the air conditioning system is normal. There are several ways to check the level of liquid, but the most common and easiest way is to use the peephole of the dryer. Fourth, check whether the compressor belt is good.

If the surface of the belt is in contact with the pulley groove, the side is bright, and there is a "squeak" noise when the air conditioner is started, it means that the belt and pulley should be replaced if the belt is seriously slipped; If the belt is too loose, it should be adjusted, otherwise it is easy to make the air conditioning system poor refrigeration. If leakage is found, you should consult the maintenance department in time for solutions. Automobile air conditioners, evaporators, fans, etc. are in a closed and dark state for a long time, and the internal environment is hot and humid.

After the impurities, dust, bacteria, and viruses in the air enter the air conditioner, they are bonded with condensate and blocked on the evaporator and other parts. Over time, a large amount of dirt, nicotine, mold, fungus, etc. are adhered to. Therefore, according to the actual situation, deal with the problem of small air volume as appropriate.

1. If the air outlet of the air conditioner is small, the possibility of the fan being bad can be ruled out under normal circumstances.

2. How long has the air conditioner filter not been changed or cleaned?

3. The air conditioner condenser is dirty and blocked.

If you are still in doubt, find an auto repair unit to check. Minor issues.

If the air outlet is small, you need to clean the air conditioner filter first, and if it is still small, you need to check whether the adjustment failure is caused by the damage of the control switch.

1. Check whether the fan blades of the air conditioner are deformed and block the air outlet.

2. Check whether there is dust accumulation, resulting in poor air outlet.

3. Check if there is any foreign object blocking the air outlet.

4. Check the compressor to see if there is a fault.

Hello, the car air conditioner is light, which means that your car air conditioning filter is clogged and you need to replace the air conditioning filter.

Go to a professional shop for repairs.