The air conditioner in the car is not on, but there is warm air. When the weather is cold in winter, it is essential for the owner to turn on the warm air function of the air conditioner. Many drivers will find that the air conditioner in the car is not turned on but there is warm air when driving. What's going on here? Let's get to know each other.
The air conditioner in the car is not on, but there is warm air. 1 The air conditioner in the car is not turned on, but there is warm air.
This is because the external circulation mode is turned on, and then the hot air in the engine compartment enters the car from the air inlet of the air conditioner. This situation will be more obvious when driving at high speed. If the external circulation is turned on at this time, the air conditioner outlet will continuously blow out hot air.
Air conditioning is a very important comfortable configuration in the car. The air conditioner of a car can be used for heating or cooling.
Driving in winter and summer, you have to turn on the air conditioner almost every day.
The refrigeration and heating principles of automobile air conditioners are relatively simple.
When the automobile air conditioner heats, the high-temperature coolant in the engine will flow through the warm air tank, and the wind from the blower will also flow through the warm air tank, so that the air outlet of the automobile air conditioner can blow out warm air.
The warm air tank is actually a heat exchanger. Without this component, the car air conditioner can't heat.
When the automobile air conditioner cools, you need to press the ac button. At this time, the compressor clutch will be engaged, and then the engine will drive the compressor to run.
When the compressor is running, it can continuously compress the refrigerant and transport it to the evaporation box, where the refrigerant expands and absorbs heat, so that the refrigerant cools the evaporation box, and the cooled evaporation box cools the wind blown by the blower, so that the air outlet of the automobile air conditioner blows cold air.
The refrigerant used in automobile air conditioning is r 134a, which needs to be replaced regularly.
The air conditioner in the car is not turned on, but there is warm air. Why doesn't the air conditioner in the car turn on and blow hot air by yourself?
Because the air inlet of the air conditioner passes through the engine, when the engine is started, the heat will be carried to the air outlet by the air. This is the principle of car heating, so driving without air conditioning refrigeration will also lead to warm air blowing out. When the air conditioning knob is turned to the heating position, warm air will come out; Adjust the cooling position, and cold air will come out; If you don't like natural warm air, turn the air conditioning system to internal circulation.
How to clean the automobile air conditioning system comprehensively
1, air conditioning filter cleaning
Before cleaning, we must find the location of the air conditioner filter. Most air-conditioning filters are located in the glove box, and the glove box must be removed before the air-conditioning filter can be removed. We first open the glove box, and we can easily take it out by squeezing the plastic on both sides of the glove box.
2. Clean the external circulation of air conditioner.
Cleaning the external circulation of air conditioner requires professional cleaning agent and spray nozzle (existing in the product). Before cleaning the external circulation, dry the evaporator of air conditioner: turn off the air conditioner switch when the vehicle is turned on, and dry the internal circulation with the maximum air volume, the maximum wind direction and the maximum temperature for about 3 minutes.
3. Clean the internal circulation of the air conditioner
Cleaning the internal circulation is relatively simple, but it is also necessary to start the car first and adjust the relevant buttons of the air conditioner: turn off the air conditioner switch, internal circulation, third-grade air volume, wind blowing on the car body or glass, and the temperature is normal (about 24℃). Then find the air inlet of air conditioning internal circulation in the passenger cab.
4. Clean the air conditioner radiator
Cleaning the radiator of air conditioner is relatively simple, but it needs to find the right position, basically in the front of the car. When cleaning, just sprinkle the "radiator cleaner" evenly on the surface, and blow it clean with an air gun after the foam dissolves and disappears. If possible, it is best to wash with a water gun.
Causes and solutions of automobile warm air not being hot
Problem 1: Possible problems in the cooling system.
1, the thermostat is always on or the thermostat is turned on too early, which causes the cooling system to make a big cycle prematurely, and the outside temperature is very low, especially when the car is driving, the cold air quickly cools the antifreeze, the engine water temperature does not rise, and the warm air does not heat up.
2. The water pump impeller is damaged or lost, so that the flow through the warm air small water tank is not enough, and the heat can't come up.
3. There is air resistance in the engine cooling system, which leads to poor circulation of the cooling system, resulting in high water temperature and lukewarm air. If there is gas in the cooling system all the time, it is likely that the cylinder pad is damaged and the gas leaks into the cooling system; If the inlet pipe of the small heating tank is very hot and the outlet pipe is very cold, this situation should be that the small heating tank is blocked and should be replaced.
Question 2: The problem of air volume control mechanism.
1, the car's warm air uses a blower to blow the heat from the warm air small water tank into the cab. If the air volume is insufficient or the distribution of cold and hot air is not good, the heat of the small water tank of the warm air will not be radiated, and the temperature of the warm air will not come up. At this point, first check whether the filter element is dirty or blocked, clean it, and replace it in time if necessary.
2. Check the operation of each gear of the blower to ensure that each gear has sufficient speed. If the knob is set to the warm air position, the air volume is large enough and the wind direction is normal, and the cold air is blown out, check whether the cable of the hot and cold air control flap in the warm air box falls off, whether the warm air impeller is damaged, whether the flap falls off, etc. After troubleshooting, the warm air will get hot.
What are the reasons why car air conditioners don't cool?
First: insufficient refrigerant. Leakage of refrigerant will lead to poor refrigeration effect. You can check the refrigerant to see if there is any leakage.
Second: the condenser is too dirty. The condenser is used to exchange heat. If its surface is too dirty, the dirt attached to it will affect its refrigeration, and the natural air conditioner will not be cold. So if the air conditioner is not cooled, it is likely to be dirty.
Third: there is water in the pipeline. When the refrigerant flows through the orifice of the expansion valve, it will drop due to its pressure and temperature. At this time, the water on the refrigerant will freeze in the small holes, resulting in poor refrigerant circulation, which is one of the reasons why the air conditioner does not cool.
The air conditioner in the car is not turned on, but there is warm air. It is more energy-saving to turn on the air conditioner and warm air when driving.
The cold air continues these days, and the majority of car owners can only describe their feelings in one word-cold! For car owners, it is essential to turn on the warm air function of the air conditioner. However, unlike the simple and easy-to-use air conditioning cold air, using warm air, in the eyes of some car owners, either feels bad or brings too many side effects, especially after using warm air, "more power consumption", "dry mouth and uncomfortable whole body" are common examples. In this regard, industry experts introduced a series of targeted use methods, allowing car owners to sweep away many inconveniences while heating.
Heating with automatic air conditioner is faster.
For those mid-to high-end cars, there are several ways to use the air conditioning and heating of the original car. It is easier to get heating with automatic air conditioner, just like the method of turning on air conditioner in the car. Just turn on the automatic air conditioner switch and set the temperature above 30 degrees Celsius. The advantage of using automatic air conditioner for heating is that the vehicle does not need preheating, and the heating comes faster and the operation is simple, which is more suitable for lazy car owners. However, this method has a disadvantage: it will increase fuel consumption to a certain extent by turning on the air conditioner compressor.
It is a little more complicated to use the water temperature of the engine radiator to provide heat. Its advantage is that it doesn't need to turn on the compressor, which is much more fuel-efficient than using automatic air conditioning. However, it also has an obvious disadvantage, and it needs to wait until the vehicle water temperature rises to the standard value before heating.
At the same time, car owners can also make proper use of natural wind. When the heating temperature is enough, you can turn off the fan and use natural wind to heat, so there will be no extra fuel consumption. If you only need natural wind heating, you must set the temperature first, then press the O FF key to use external circulation. At this time, all the displays on the screen disappeared, but the heating continued to be emitted. The faster the speed, the more sufficient the heating.
Turning on the warm air after driving can save electricity.
Due to the cold weather, many car owners enter the car and turn on the heating of the air conditioner immediately after ignition. In fact, this not only did not make the temperature inside the car rise rapidly, but increased the burden on the engine and delayed the normal temperature rise of the engine. The correct way is to start the engine warm-up. After the engine temperature indicator reaches the middle position, first turn on the warm air conditioner, and set the air circulation to external circulation, so that the cold air in the car can be discharged outside the car. After waiting for 2-3 minutes, set the air circulation to internal circulation. Experts say that if you are eager to turn on the air conditioner to warm up, you will lose the power of the battery. When the vehicle is turned on after driving, you can use the generator to supply power.
A crack in the window can drive away the turbid air.
I believe many car owners will find that whether in their own cars or in other people's cars, when the air conditioner is turned on for a while and they feel obvious warmth, they often feel uncomfortable. Chen Jin, a car maintenance expert, said that this is because the car itself is in a closed space. If there are many people in the car, heat exchange will continue from each other's breathing, which will lead to the feeling that the air is not circulating. However, there is no such discomfort when air conditioning is used in summer. In this regard, the owner can open a slit in all four windows, which can drive away some dirty air in the car, and people can effectively relieve the symptoms of chest tightness after turning on the air conditioner warm air.
Warm air can also remove fog.
When it rains in winter, due to the high air humidity and the large temperature difference between the inside and outside of the car, it is easy to produce fog in the car. The best way to eliminate fog is to use air conditioning. The most common way is to turn on the air conditioner and blow cold air against the front windshield. After all, if the air conditioner heater is used improperly, it will not only eliminate the fog, but also create the fog. Many car owners know that when you press the defogging button on the window, cold air will automatically blow on the windshield, which can quickly eliminate the fog on the window. But when it rains, there are more than two passengers on the bus. Even with this method, fog will appear soon. In the face of such repeated fogging, car owners are inevitably bored. Industry experts told reporters that at this time, the owner can try to turn on the warm air defogging mode, turn the air conditioning temperature adjustment button to the warm air direction, and turn the air conditioning direction button to the glass air outlet. At this time, the hot air will blow directly to the front windshield. However, it should be noted that this method of warm air demisting will not be as fast as that of cold air demisting at first, but will generally last for 1-2 minutes, and the moisture on the glass will be dried by hot air without repeated fogging. It's cold and rainy in Guangzhou now, but the weather is still relatively dry. Therefore, the effect of demisting with warm air will be better than when it is wet.
Don't blow the heating directly on your face.
In winter, the climate itself becomes dry, and the heating in the car will only make the air inside the car drier. For women, beauty or warmth has become a dilemma. At the same time, the dry air in the car is easy to generate static electricity, which makes people feel quite uncomfortable. Huang, general manager of Guangzhou Huangpolo Automobile One-stop Maintenance Shop, pointed out that after the car is heated, the air outlet should not be directly aimed at the human face, which makes the skin dry more easily. In order to prevent it from being too dry, you can not only use the car humidifier, but also put a wet towel on the dashboard. Moreover, the heating air outlet blows directly on people's faces, which will make long-distance drivers feel sleepy and bring safety hazards to driving.