What is the reason why the temperature of the car air conditioner is high and the temperature can be

The reason why the car air conditioner has a high temperature and a low starting temperature may be that the air conditioner is about to break down, so it is recommended that you repair it when you go for maintenance.

Go to the garage to check the temperature sensor.

No, the car air conditioning compressor is refrigerated, and the refrigeration is only started when the actual temperature in the car is lower than the set temperature.

1. The automotive air conditioning and refrigeration system is composed of compressor, condenser, liquid storage dryer, expansion valve, evaporator and blower. Copper pipes (or aluminum pipes) and high-pressure rubber pipes are connected into a closed system between the components. When the refrigeration system works, the refrigerant circulates in this closed system in different states.

2. Refrigeration principle:

After the regulator is energized, the low-pressure steam of the refrigerant in the refrigeration system is sucked in by the compressor and compressed into high-pressure steam and discharged to the condenser. At the same time, the outdoor air drawn in by the axial fan flows through the condenser, taking away the heat released by the refrigerant, causing the high-pressure refrigerant vapor to condense into a high-pressure liquid. The refrigerant liquid with the outdoor air is exchanged with the air at medium temperature and medium pressure, and enters the evaporator after throttling and cooling through the capillary tube, and evaporates at the corresponding low pressure to absorb the surrounding heat.

At the same time, the cross-flow fan continuously enters the ribs of the evaporator for heat exchange, and sends the cooled air to the room after heat release. In this way, the indoor air is constantly circulating and flowing to achieve the purpose of cooling.

It should be a problem of poor heat dissipation, which can be found and eliminated from the following aspects:

1. Check whether the electronic fan is working normally, under normal circumstances, the electronic fan has two gears, one is a low-speed gear, and the other is a high-speed gear, the high-speed gear generally works when the air conditioning pressure is too high and the water temperature of the engine reaches 103 degrees Celsius.

2. Check whether the opening of the thermostat is insufficient, the thermostat will be too small at normal temperature, which will lead to the slow circulation speed of the cooling water of the engine, which will lead to the phenomenon of high water temperature at low speed.

3. Check whether the pump is idling. The Jetta avant-garde water pump impeller is plastic, and if the shaft is listed, it will cause idling when the water temperature is high, resulting in high water temperature.

4. Check whether the grounding of the ground wire near the battery and the engine water temperature sensor is not real, if the ground wire contact is not real, it is easy to cause the water temperature indicated by the water temperature gauge to be high, which is also called false high.

Car Air Conditioner Composition:

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.

4. Air purification system: its function is to filter the introduced air, continuously remove the dirty gas in the car room, and keep the air in the car clean.

5. Control system: The control system is mainly composed of electrical components, vacuum pipelines and control mechanisms. On the one hand, it is used to control the temperature and pressure of the refrigeration and heating system, and on the other hand, it is to manipulate the temperature, air volume and flow direction of the air in the car room to improve the functions of the air conditioning system.

Frequent use of air conditioning can increase the load on the engine. Pay more attention to the water thermometer when driving, once the symptoms of water temperature rise, if you don't know how to deal with it, stopping in time to cool down naturally is the easiest way to deal with it.

The water thermometer pointer is above the red line, which indicates that there is a problem with the heat dissipation of the car engine. If you continue to drive at this time, it is likely that the engine of the car will be burned out.

The direct cause is poor engine heat dissipation. For example, small displacement cars climb mountains with air conditioning in summer to increase the engine load; If the car is used for a long time, the dirt inside and outside the water tank is not cleaned, which affects the cooling water circulation and heat dissipation of the water tank; Damage to the fan or other heat dissipation components, failure to assist the water tank in time to dissipate heat, etc., will cause the cooling water in the tank to reach the boiling point. If the water tank is not dealt with in time, the most serious result is direct damage to the engine, followed by high maintenance costs.

In summer, the water temperature of the car is high, and the air conditioning is not cool.

If the refrigeration effect is not good, it is generally due to the leakage of refrigerant, or the failure of the compressor, and whether the temperature adjustment torque of the air conditioner is faulty.

1.Please wash the water tank, check the speed of the fan coupler when the temperature is high, replace it when it is low, and check the tightness of the belt. Check the air conditioner's electronic fan. Clean the condenser.

2.If none of the above is done, the thermostat is damaged. If you want to remove the thermostat, you should plug the small circulation at this time, so as to ensure that all the coolant is dissipated by the water tank; When installing a new thermostat, you should pay attention to the water hole, such as Santana does not have a water hole, at this time, a 6mm drill bit should be used to drill a hole.

3.One function is to be used as a marker; Another function is that during the heating process of the car, the temperature difference between the two sides of the thermostat is generated, so that the thermostat is accurately opened with the water temperature.

Normal normal, very normal. If you're still not sure, try changing the water temperature sensor. The general temperature is not more than 100, and the electronic fan does not work to drop.

So sometimes, the water temperature is low when the air conditioner is turned on. Because the silicone oil fan, when the air conditioner is turned on, it will increase the wind power. The silicone oil fan will always work lazily, even if the water temperature is over 100 and the air conditioner is not turned on, it will also drip lazily.

At the same time, you can only rely on electronic fans.

In summer, remove the thermostat and circulate it all the time, the water temperature generally does not exceed 100 °, and when the traffic jam exceeds 100 °, the 106 ° electronic fan begins to rotate, the water temperature will drop, and the speed of the car will run above 40, and the water temperature will begin to drop. In winter, the thermostat will rise faster, the thermostat controls the size of the circulation, the water temperature is not too high in winter, the water temperature is too low, and the water temperature will cost oil, and the water temperature will rise quickly, and it will also save fuel. I just removed the thermostat when it was hot two days ago, and the water temperature is now very normal, and occasionally there is a traffic jam, and it will never reach 110° again.

Personally, I don't feel that it plays a role, if it is a blocked waterway, it has been an engine that uses antifreeze, there is very little iron oxide, most of it has been limescale-based, if you have added water before, this little acidity is not enough, oxide can not be formed in a day or two, remove the water temperature sensing plug to see if it is scale or oxide!

Air conditioner use 6 caution.

1. The AC voltage used in single-phase window air conditioners should be 220V10. Before installation, the capacity of the wire should be verified, if the capacity is not enough, a special line should be laid, and a matching air switch should be installed on the line, or a fuse matching the capacity should be used.

2. At the air inlet in front of the evaporator, the filter screen set up for filtering air dust should be cleaned regularly to keep the ventilation good.

3. The radiator on the outdoor side of the air conditioner, as well as the evaporator and condenser, should be kept clean, and the dust and dirt stuck to it should be brushed frequently to ensure the normal refrigeration of the machine.

4. The bearings of the fan motor generally use oil-impregnated bearings, which should be filled with oil once every six months, and if ball bearings are used, they can be cleaned and changed once every two years.

5. When the air conditioner is running normally, there is only a slight fan turning sound, if there is an abnormal sound or burnt smell, it should be shut down immediately for maintenance.

6. In case of power failure, it should be shut down immediately, and it can be restarted after an interval of three minutes.

Summary. 1. The power supply voltage is unstable. This is a very common reason, some areas have high electrical voltage during the day, and the voltage is low at night, resulting in the air conditioner can refrigerate normally during the day, and it will not work at night.

Or the voltage is high and low, causing the computer board to automatically reset or the compressor to overcurrent protection. This kind of problem is relatively easy to find and solve, and it is generally possible to solve the problem by purchasing a voltage regulator with the right power.

2. The power supply is unbalanced between the three phases. This is more prevalent in rural areas. Air conditioners often have over-voltage, under-voltage protection, over-current protection, and difficulty in starting in use.

What is the reason why the air conditioner has a high temperature and does not start and the temperature is low and can it be started.

1. The power supply voltage is unstable. This is a very common reason, in some areas the electrical voltage is high during the day, and the voltage is low at night, and the air conditioner can be cooled normally during the day, but it does not work at night. Or the voltage is high and low, causing the computer board to automatically reset or the compressor to overcurrent protection.

This kind of problem is relatively easy to find and solve, and it is generally possible to solve the problem by purchasing a voltage regulator with the right power. 2. The power supply is unbalanced between the three phases. This is more prevalent in rural areas.

In the use of air conditioners, there are often over-voltage, under-voltage protection, over-current protection, and difficulty in starting.

Maintenance during start-up: After the air conditioner is turned on, it depends on the environmental conditions, climatic conditions, the number of hours of start-up, the surrounding dust, air cleanliness, whether the room is clean and many other factors determine the number of maintenance times during the start-up process of the air conditioner. The environmental conditions are not good, the weather is hot, the air conditioner is outdated, the air conditioner is turned on for a long time, and the number of maintenance during the air conditioner start-up process increases, usually once every month and a half.

If the environmental conditions are good, the slag of the air conditioner is relatively new, the dust in the air is less, the air conditioner is reasonably turned on, and the electric fan is used alternately, the maintenance cycle can be appropriately extended, from the failure of the air conditioner to the shutdown of the air conditioner jujube chain vibrillation for maintenance 1-2 times. Maintenance should be careful and careful, leaving no dead ends. Comply with the specifications, improve the refrigeration speed and refrigeration effect, and achieve energy saving, freshness and comfort.

Summary. Hello, happy to answer your questions.

Hello, happy to answer your questions.

Hello, the temperature of the car air conditioner can not be adjusted, Chang Fang this to check, you adjust the switch or adjustment button is not damaged by the problem caused by the history of the argument You can take a picture of the control panel to show me what is the limb rapid control adjustment?

This switch can only be reduced but not increased, now it is 23 degrees, it cannot be increased to 24, it can be subtracted down.

If you can't dig up, you can only add it up to 23 degrees, which shouldn't be possible, but if it's normal, it will be increased to about 28 degrees. There is only one case for this, and that is if your key head is broken, or the core control panel at the back is collapsed. There is a problem.

The number is decreasing, not increasing.

The switch is out of order. I know that the number of closed lines is only reduced but not increased, and the minimum can be increased to about 28 degrees, and you can't add 23 degrees now, there must be a problem. The problem may lie in the control of the J&M panel, or in the keys of the keys.

By the way, the switch may be out of order.

What to do. How do I fix it?

How to fix this to replace the on/off key button.

If I can help you, please give me a thumbs up Thank you!

Or remove the control panel, take it for repair, or replace the switch.

Summary. There is no way to adjust the temperature of the air conditioner, if this phenomenon occurs, that is to say, when you adjust the knob or adjust the button, it is the temperature change after adjustment. If the temperature does not change, there may be a problem in the air conditioner panel, a problem with the circuit board that causes the temperature adjustment knob to fail, or a problem with the control module of the air conditioner that cannot control the temperature of the air conditioner normally.

He may be connected to this line of the air conditioning panel, or there is a problem with the circuit board inside, you can turn off the engine and restart it to try, if it still doesn't work, then you need to check these two aspects specifically, use the computer to detect the air conditioning system, see if there is a problem with the data flow, if there is a problem, according to the fault of the detection ** to deal with.

The temperature of the car cannot be controlled, and the display is normal.

There is no way to adjust the temperature of the air conditioner, if this phenomenon occurs, that is to say, when you adjust the knob or adjust the button, it is the temperature change after adjustment. This temperature has not changed, in this case, it may be that there is a problem in the air conditioner panel, there is a problem with this circuit board, which causes the temperature adjustment knob to fail, or there is a problem with the control module of this air conditioner, which cannot control the temperature of the air conditioner normally. He may be connected to the line of this air conditioning panel, or there is a problem with the circuit board in the rolling out cover, you can turn off the engine and restart it to try, if it still doesn't work, then you need to check these two aspects specifically, use the computer to detect the air conditioning system, see if there is a problem with the data flow, if there is a problem, according to the fault of the detection ** to deal with.

If the temperature of the air conditioner is normal, there is no way to adjust it, then this is caused by the problem of the air conditioning early shielding module, and it needs to be detected by the computer, and the data flow of the air conditioning system is specifically judged according to the data flow.

When the car is cold, the shaking is worse than before.

Is it time to change the spark plug?

The spark plugs need to be replaced, and the throttle and fuel injectors need to be cleaned.