In 07, the Mondeo air conditioner was turned on for a long time, and the wind became smaller?

Generally, it is caused by a clogged air conditioner filter.

It is also possible that the evaporator temperature sensor, the air conditioner blower regulator is related, and a diagnostic check is needed to see the data stream.

Recently, a friend asked what is going on with the air conditioning of his car that has been very little air conditioner recently? Later, I went to take a look, and it turned out that the air conditioning filter was too dirty, and he didn't notice the cleanliness of the air conditioning system, so the air conditioning in the car became smaller and smaller. So in addition to the air conditioning filter, what are the reasons for the low wind in the car air conditioner, and then what to do?

First of all, let's check whether the wind direction is wrong, it may be that when the wind direction is selected to blow the front windshield, the wind blowing into the cabin is very small.

It may be a problem with the blower, the blower has a short circuit or too little power, resulting in a small amount of air to be delivered. If it is a problem with the blower, the owner is not good at dealing with it by himself, it is recommended to go to a professional repair shop or 4S shop for maintenance.

Of course, it is also possible that the air conditioner filter is too dirty, resulting in the air conditioning air conditioning is blocked, and only part of the air is sent in, so the owner can regularly clean the air filter, note that the cleaning here is not to wash with water, but to use a vacuum cleaner to suck out the dust inside, or use an air compression gun to clean. If it's really dirty, it's recommended to replace it. The replacement cycle of the air conditioning filter element is generally 10,000 kilometers or about once every six months.

The blockage of the condenser may also cause the air outlet of the car air conditioner to be small, and the air conditioner condenser is located at the front of the car, the cleaning method is simple and troublesome, you can directly flush the condenser with a water pipe; In addition, it can be disassembled and washed, which requires removing the condenser to ensure the cleanliness of cleaning. If you don't want to do it yourself, you can still go to a professional car wash to clean it.

Check the fan speed setting of the remote control, if it is set to du, the high-speed air volume is not large, it means that there is a problem, and you should contact the sales DAO in time for maintenance.

If the wind speed increases significantly, it is a problem with the setting. Generally, the fan speed is set to automatic mode, and the air conditioner will automatically adjust the speed according to the indoor temperature to achieve the best effect.

Some air conditioners have a mute button on the remote control, and when you press the mute button, the fan speed will run at low speed, and then you have to press the mute button again to return to normal.

There may be a program, evaporator temperature sensor, air conditioner blower regulator related, need diagnostic checks, look at the data stream.

Generally, the air conditioner filter is clogged. Just clean it up.

The air conditioner filter is generally replaced once every 1 or 2 years, and if you gamble on the game, it will blow out ash, the wind will become smaller, and the smell will become unpleasant.

Nowadays, many air conditioners are inverter, that is to say, when your indoor temperature reaches a certain level, the external compressor will run at low speed, so as to achieve the effect of saving electricity, so the corresponding wind may be small at this time, so it mainly depends on whether your air conditioner is inverted and whether it has this intelligent function.

Check to see if the wind speed is on the automatic transmission, because at the beginning when the air conditioner is cooling, the fan blows the air at the fastest speed. When the temperature is as low as the set temperature, the air conditioner stops refrigerating and the wind speed becomes a lower speed. The same goes for heating.

This is normal.

The compressor will not run all the time, regardless of whether the air conditioner is heating or cooling.

The airflow of your air conditioner is set to "Auto". In the case of automatic air volume, for example, heating is now in winter. When the air conditioner compressor is working, the air volume is large, and the hot air blows out, but after the set temperature, the compressor stops running, and the air volume automatically becomes smaller.

If the compressor is not working, there is still a large air volume, and the wind blowing out has no temperature, and people still feel very uncomfortable.

First of all, you need to make sure that the remote control can be used normally, and then make sure that the wind speed on the remote control is in the minimum wind speed mode. Generally, the air speed adjustment of air conditioners includes: automatic, low wind, medium stroke, high wind, four modes to choose; If it is on the highest gear, you have to check whether the filter in the air conditioner is too dusty, and if there is too much dust, you need to clean it; It should also be reminded that the strength of the wind has nothing to do with the amount of fluorine.

If all of the above is a problem, then check the capacitance of the internal fan and the related control circuits.

Other reasons: 1. First of all, it is necessary to determine whether the remote control can be used normally, and then determine the remote control"Wind speed"Whether it is in the smallest wind speed gear.

2. The wind speed adjustment of general air conditioner includes: automatic, low wind, medium stroke, high wind, four modes to choose;

3. If it is in the highest gear, you need to check whether the filter in the air conditioner is too dusty, and if there is too much dust, it should be cleaned;

4. In addition, it should be reminded that the size of the wind has nothing to do with the amount of fluorine.

5. If the above is all right, then check the capacitance of the internal fan and the related control circuits.

Comment: It may be an automatic deceleration of speed regulation.

It's easy. Find a maintenance master or replace the starting capacitor of the air conditioner compressor with a brand new one with the same specification to solve the problem.

The reason why the air conditioner has this situation is because the compressor starts to run and the capacitor is aging, and only after powering on for a long time can the capacitor reach the state of starting the compressor.

Maintenance method: Replace the new compressor starting capacitor of the same specification.

1. It may be a problem with the blower, the blower has a short circuit or the power is too small.

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

3. The wind impeller is directly installed on the fan, and the fan is not strong to indicate that the fan needs to be replaced, or it may be that there is a resistance to the shell on the fan blade, so there will also be the possibility of wind reduction, as long as the fan blade is adjusted, it can be solved.

4. The filter element of the air conditioner is too dirty, which causes the air outlet of the air conditioner to be blocked, and only part of the air can be sent in.

Generally, this is because many cars are equipped with cabin air filters, the purpose of installation is to keep the interior of the vehicle getting clean air, which also keeps the air conditioner evaporator clean and gets the best results.

However, after a period of use, the filter will be covered with dust, resulting in reduced air permeability, and the air volume of the air outlet will also be reduced.

Therefore, the problem is solved by simply replacing it with a new filter.

Because the temperature in the car is too low, the evaporator does not exchange enough heat and freezes, which affects the blowing out of the air volume and reduces the wind speed.

Air conditioning refrigerant, also known as refrigeration working fluid, is the working medium of the refrigeration cycle, which uses the phase change of the refrigerant to transfer heat, which is that the refrigerant absorbs heat when it vaporizes in the evaporator and releases heat when it condenses in the condenser. At present, there are more than 80 substances that can be used as refrigerants, and the most commonly used are ammonia, freons, water and a few hydrocarbons.

Chinese name: air conditioning refrigerant.

Another name: refrigeration working fluid.

Properties: the working medium of the refrigeration cycle.

Function: The phase change of the refrigerant is used to transfer heat.

Too much refrigerant, or the temperature in the car is too low, resulting in insufficient heat transfer in the evaporator, and freezing, affecting the blowing of the air volume, and the wind speed becomes smaller.

Because the car engine has a good refrigeration effect at high speed, it is more likely to cause the evaporator to freeze, it is recommended to increase the temperature in the car, or put some refrigerant, but do not put too much, so as not to have insufficient refrigeration capacity when idling, not cold.

The air volume of the car air conditioner becomes smaller, because the air conditioner filter is blocked.

Here's how to solve the problem:

If the external circulation air volume used is relatively small, and the internal circulation air volume used is normal, it should be the filter plug of the air conditioner. This situation needs to be solved by replacing the cabin air filter with a new one.

If the amount of air is very small, regardless of internal and external circulation, it may involve problems such as duplication of internal pipes. This situation is not as easy as it used to be. It is advisable to check the cabin air conditioner filter first. Replace the aircon filter, the aircon filter is too dirty and blocks the aircon from entering the car.

How car air conditioners work:

The automotive air conditioning and refrigeration system consists of a compressor, a condenser, a liquid reservoir dryer, an expansion valve, an evaporator, and a blower. Copper (or aluminum) and high-pressure hoses are used to connect components to form a closed system.

When the refrigeration system is working, the refrigerant circulates in different states in this closed system. There are four basic processes in each cycle:

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: high temperature and high pressure superheated refrigerant gas enters the condenser. Due to the decrease in pressure and temperature, the refrigerant gas condenses into a liquid and expels a large amount of heat.

3. Throttling process: the refrigerant liquid with higher temperature and pressure becomes larger after passing through the expansion device, the pressure and temperature drop sharply, and the expansion device is discharged in the form of mist (small droplets).

4. Endothermic process: the refrigerant liquid enters the evaporator, so the boiling point of the refrigerant is much lower than the temperature in the evaporator, so the refrigerant liquid evaporates into gas. During the evaporation process, a large amount of heat from the surroundings is absorbed, and then the refrigerant vapor at low temperature and low pressure enters the compressor.

In order to reduce the temperature of the air around the evaporator, the above process is repeated.

Why does the air volume of car air conditioners become smaller?

How is the cost of hiring a truck to transport goods and what are the aspects? Today is a long time to see.

Is it that the air conditioner filter is blocked, or the blower resistor is broken?

It may be the reason for the long-term internal circulation, and the condenser is icing and blocking the air duct! It's good to turn on the external circulation for a while, or turn off the air conditioner and just turn on the fan, and it will be fine for a while. This shows that your air conditioner works well!

I usually turn off the air conditioner when I'm going uphill, but the fan doesn't turn it off all the time, which can both defrost and increase power when going uphill. Chinese friends roadun:

How long does it usually take for it to freeze? Chinese friend moto kid:

There is no fixed time for icing, it is mainly related to the environment, and the weather is particularly humid, so it is easy to freeze and the time is short. If the weather is dry, it won't freeze for a long time. Now that I think about it, there may be some reasons why my car's air volume decreased that day

1. Dampness. The climate in the Emei Mountain area is particularly humid, and there is a layer of water mist on the walls in many places. Second, it is possible to open the inner loop and forget to switch to the outer loop, which I can't remember.

Changing the cabin air filter can solve the problem.

In this case, it is a matter of the location of the temperature probe, which can be placed in the air inlet, not near the cold air inlet. The temperature sensed by the probe is relatively high, and the air conditioner will not automatically adjust the cooling capacity.