What is the reason why the compressor does not start when the AC indicator light of the car is on?

The AC indicator light is on, and the compressor does not start.

1. First of all, you need to check the pressure switch of the car air conditioner, too high or too low pressure will cause the compressor to not work. It may be due to a leak of refrigerant, resulting in a shortage of refrigerant, or too much refrigerant added.

2. The relay and fuse that need to be checked for effect, whether there is a short circuit or short circuit, if there is a need to replace it.

3. It is also necessary to check whether the circuit of the compressor of the air conditioner is faulty, which may be an abnormal short circuit. You need to use a multimeter to check whether the compressor is energized, and if there is electricity, then check the thermal switch that controls the compressor starting.

4. It may be that the compressor does not work due to the speed switch problem of the blower, and it may be caused by poor line contact.

If all the relevant areas have been inspected and the compressor is still not working properly, then it is possible that the compressor is damaged and needs to be replaced. The compressor of the general car is about 800 yuan to 1500 yuan, and it can be replaced at a 4S shop or an auto repair shop.

Check the line step by step from beginning to end, first check whether the power supply of the compressor coil is normal, if the voltage is normal, focus on checking the compressor coil, if the coil is damaged, replace the coil and clutch related parts! If there is no voltage to check, focus on checking the line, first check the output fuse and relay unit, and then find out whether the line is broken, just such a maintenance idea, slowly check!

1. The pressure of the automobile air conditioner is too high or too low;

2. The refrigerant of the automobile air conditioner is insufficient or excessive;

3. The relay or fuse of the automobile air conditioner is short-circuited or broken;

4. The blower is faulty, which causes it to be unable to work normally, which affects the compressor and cannot start;

5. The line contact of the compressor of the automobile air conditioner is poor or the line is faulty.

Check the insurance and relay, there is a high probability that this is the thing.

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

Hello, the car air conditioner press the AC button light on, clear but the compression answer punch banquet machine does not start, in this case, first check whether the freon of the air conditioning system is a loss, if the air conditioning system lacks fluorine, the compressor will not start, and then check whether there is a problem with the air conditioning pressure switch.

After turning on the air conditioner, the cooling fan turns and the compressor does not work. It is possible that the compression head is damaged, you can first use the voltage tester to test whether the compressor is energized, if the positive and negative electrodes are electrified, then it must be the compressor head is damaged.

If you say that you are unwilling to run the compressor at idle speed and low speed before, you should check: the pressure switch of the air conditioning system and the thermal switch plugged into the evaporator. Because when there is no problem with the circuit, the pressure switch controls the compressor to start, and the thermal switch controls the compressor to shut down.

Introduce the use of automotive air conditioning 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 AC indicator light is on, the compressor is not starting, and we want to check if there is a problem with the following parts:

1. First of all, check the pressure switch of the car air conditioner, too high or too low pressure will cause the compressor to not work. The possible cause is a leak of refrigerant, resulting in a shortage of refrigerant, or too much refrigerant added.

2. It is necessary to check the function of the relay and fuse, whether there is a short circuit or short circuit, and replace it if necessary.

3. Check whether the air conditioning compressor circuit is faulty, it may be an abnormal short circuit. Use a multimeter to check if the compressor is energized. If yes, check the thermal switch that controls the compressor.

4. It may be that the compressor does not work due to the speed control switch of the blower, or it may be caused by poor line contact.

If the compressor is still not working properly after checking the relevant places, it is possible that the compressor is damaged and needs to be replaced. The compressor of the general car is about 800 yuan to 1500 yuan, which can be replaced in a 4S shop or an auto repair shop.

Workaround for air conditioner compressor not working:

1. If the compressor cannot work due to too much or insufficient refrigerant, the refrigerant can be added or the excess refrigerant can be extracted;

2. If there is a problem with the pressure of the car air conditioner, the pressure switch can be adjusted to the appropriate pressure;

3. Check whether there is a problem with the relay and fuse of the air conditioner, and replace it if so;

4. The blower should be repaired or replaced if it fails;

5. Maintenance of compressor lines.

The air conditioning compressor of the car is generally installed on the engine and below the generator, because the compressor of the car needs to be connected to the engine with a belt to work, so you can find the compressor of the car by looking for the belt. Automotive air conditioning compressors are the core components of refrigeration. Without a compressor, an air conditioner cannot be cooled.

The phenomenon of a bad car air conditioner compressor is:

1. The most common phenomenon is that the car air conditioner is not refrigerated

2. When the air conditioner is turned on for refrigeration, the engine speed will often increase, but if the compressor is broken, the compressor will not start, and the engine speed will not increase;

3. When the vehicle is driving, there may be engine stalling, abnormal noise, and burning smell.

Maintenance. Because the AC indicator of the air conditioner is on, the compressor does not start, which means that the compressor is faulty, so it should be repaired as soon as possible.

In this case, you can restart, if there is no way to solve it, you need to go to a professional place for repair, you can go to the 4S shop.

Check the switch of the air conditioner to see if there is anything wrong with the air conditioner, if nothing is wrong with the air conditioner, you can go to the maintenance factory and let the maintenance master help check it.

It may be because there is a problem with the air conditioner, and you should go to the 4S shop for maintenance at this time, so that it can be used normally, which can be regarded as a kind of maintenance of the car.

Hello, malfunction of AC light flashing.

There are many bai, usually du air conditioning electronic zhi control system failure is more common than dao possible reasons have back: 1. line.

Road fault answer 2, pressure switch fault 3, air conditioner leakage 4, indoor and outdoor temperature sensor fault 5, blower fault 7,According to the different designs of the air conditioner, the system adds other faults as soon as possible to check, especially in the rainy season without air conditioning is a dangerous thing.

Close the key door and press and hold the auto and inner cycle keys at the same time to open the key door, settle for more than 3 seconds, all the lights on the air conditioning panel will flash, and then the air conditioner LCD will pop up the fault code, it is a digital code, you first see what the number is.

It may be that the solenoid switch of the compressor is broken.

I'm the same way, but it'll be fine after a while.

1. What happens when the air conditioner running light is not on?

This should not be a problem with the compressor, if there is a problem with the compressor, the light should be on when it is first turned on, and then it will be protected immediately, or tripped. You get electricity from another outlet to the air conditioner to see if it's normal. Or let's take a look at the main power switch first, and whether it's the air switch for the air conditioning socket is not on.

2. Analysis and maintenance method of air conditioning running light not lit:

According to the phenomenon analysis, the fault is generally caused by the inability of indoor and outdoor units to communicate. The main reasons and maintenance methods are as follows:

1) Check whether the indoor and outdoor connection lines are correct according to the wiring diagram;

2) Replace the outdoor electrical control board, if the fault still exists, check whether the wiring of the indoor unit is correct;

3) Replace the indoor electromechanical control board. If the judgment is due to the poor communication phenomenon caused by the replacement of the indoor unit (or outdoor unit) transformer, then the two wires of the primary winding of the transformer can be exchanged. The machine was inspected as having a poor indoor electromechanical control board.

Machine troubleshooting after replacing the electric control board.

The biggest possibility is that the refrigerant is leaking.

Go check the ** leak first, and then repair it first. If you don't add socks, they will also leak, resulting in poor refrigeration effect, or even no refrigeration.

If there is no refrigerant, the compressor will not run. There is a pressure switch on the air conditioning pipe, and when the pressure trap is too high or too low, the compressor does not work, so it is set to protect the Wang Hu compressor.