Do car air conditioner fans have forward and reverse rotation?

Does the car air conditioner fan have forward and reverse rotation The air conditioner that uses three-phase electricity is generally a reciprocating compressor, and the working current of this compressor is the same.

Reciprocating compressors are positive displacement compressors, which are compressors that sequentially suck and discharge a certain volume of gas into and out of a closed space to increase static pressure.

The crankshaft drives the connecting rod, the connecting rod drives the piston, and the piston moves up and down. When the piston moves downward, the cylinder volume increases, the intake valve opens, the exhaust valve closes, and the air is sucked in to complete the intake process; When the piston moves upward, the cylinder volume decreases, the outlet valve opens, and the intake valve closes, completing the compression process. Usually there are piston rings on the piston to seal the gap between the cylinder and the piston, and there is oil lubricating oil in the cylinder to lubricate the piston rings.

A positive displacement compressor that relies on one or several reciprocating pistons to change the internal volume of the compression chamber.

At present, reciprocating compressors are mainly piston air compressors, chemical process compressors, oil and natural gas compressors, and piston air compressors are now mainly developing in the direction of medium pressure and high pressure.

Do car air conditioner fans have forward and reverse rotation? There is no situation like this, unless there are special circumstances, the general car air conditioning fan is not forward and backward, he just rotates in one direction, and as a result, we use the same electric fan today.

It is normal for the car air conditioner fan to turn and stop. When the aircon fan stops working, the owner should check if the water temperature is 90 degrees. If it is 90 degrees, it is normal; If the water temperature exceeds 90 degrees when the air conditioner is turned on, check that the water tank and condenser are dirty.

If it is too dirty, it will affect heat dissipation. It is recommended to clean the surface of the tank and condenser.

It is normal for the car air conditioning fan to turn and stop for a while. When the owner of the air conditioning fan stops working, see if the water temperature is 90 degrees, if it is 90 degrees, it is normal; If the water temperature exceeds 90 degrees when the air conditioner is turned on, it is necessary to check whether the appearance of the water tank and condenser is very dirty, if it is too dirty, it will affect the heat dissipation, it is recommended to clean the appearance of the water tank condenser.

When the car turns on the air conditioner, the fan will turn. Because when the air conditioner is turned on, it means that the compressor is turned on, and the heat must be dissipated after the compressor is turned on, so the fan will turn. The design rotates with the compressor, and the coil of the fan is connected to the compressor coil.

Automobile air conditioning refers to the air conditioning device installed in the car, which can cool, heat, ventilate and purify the air in the cabin. Provide a comfortable riding environment for passengers, reduce the fatigue intensity of drivers, and improve driving safety.

How car air conditioners work.

The automotive air conditioning and refrigeration system is composed of a compressor, a condenser, a liquid storage dryer, an expansion valve, an evaporator and a blower. Copper pipes and high-pressure rubber pipes are used to connect them into a closed system. The refrigeration system works, and the refrigerant circulates in a closed system in different states.

Each cycle has four basic processes:

1. Compression process: inhale the low-temperature and low-pressure refrigerant gas at the outlet of the evaporator, compress it into high-temperature and high-pressure gas and discharge it out of the compressor.

2. Heat dissipation process: The superheated refrigerant gas at high temperature and high pressure enters the condenser, and is condensed into liquid to dissipate heat by the reduction of pressure and temperature.

3. Throttling process: the volume of the refrigerant liquid with higher temperature and pressure becomes larger after passing through the expansion device, and the pressure and temperature drop sharply, and the expansion device is discharged with fine droplets.

4. Endothermic process: the mist refrigerant liquid enters the evaporator, and the boiling point of the refrigerant is much lower than the temperature in the evaporator, so the refrigerant liquid evaporates into gas.

The circuit design of various brands of automobiles is different. However, there is a possibility that the fan relay is broken, or the water temperature sensor is broken (the plug may also be lost), and then the line of the water temperature sensor is open or short-circuited. If it is a high-end car, it is controlled by the engine computer board, and you can use the decoder to see what the fault is, and then make a judgment.

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.

If your car's electronic fan does not have high speed or the speed of high speed is not enough, the above phenomenon will definitely occur. It should be noted that if the electronic fan does not have high speed, it is not necessarily the problem of the electronic fan, the high-speed insurance of the electronic fan is in the fuse box on the battery, if the insurance is burned, the line contact of the insurance is not real, the high and low voltage switch of the air conditioner is damaged or the fan high-speed relay is damaged, it will lead to the electronic fan without high speed.

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.

Yes, turning on the air conditioner fan will definitely turn, and if it doesn't, it will need to be repaired.

There are two fans, a radiator and a condenser;

The fan is controlled by the medium-voltage switch in the pressure switch, for example, when the pressure is reached, the medium-voltage switch action makes the condensing fan run at high speed.

After turning on the air conditioner, the compressor starts to work, after it compresses the condensate into liquid, the temperature of the condensate will rise, if this part of the heat is not discharged, it will not be able to carry out the next cycle of refrigeration, so it must be dispersed into the atmosphere through the radiator, and the natural heat dissipation effect of the radiator is very poor, and therefore, turn on the fan and force the heat dissipation.

As soon as the car air conditioner is turned on, the fan must be turned.

！If you don't turn, there is a problem.

Hello. In fact, one day, the air conditioner compressor and the electronic fan on the air conditioner's radiator plate work together.

Because the compressor works to compress the refrigerant to a high temperature.

It's about to dissipate heat.

If you don't dissipate heat, the cooling effect is not good.

or not refrigerated. And then there's the fry-pipe.

There are several reasons for the reversal of the fan of the air conditioner:

1. Poor contact of the main control switch.

Maintenance method: Use a meter to measure the contact resistance of the main control switch, when the resistance is too large or zero, it should be repaired or replaced.

Second, the fan motor coil is damaged.

Maintenance method: Use a meter to measure the contact resistance of the main control switch, when the resistance is too large or zero, it should be repaired or replaced.

3. The set screw between the motor of the fan and the fan blade is loose.

Maintenance method: Tighten the set screws.

4. The fan capacitor is open or short-circuited.

Repair method: Check the capacitor and replace it with a capacitor of the same specification.

Extended Information: There are 4 precautions for air conditioner maintenance:

1. Be sure to unplug the power plug from the socket before disassembling the equipment during maintenance. Operation on a powered-on device can cause an electric shock. If it is necessary to connect the power supply for repair or testing the circuit, do not remove any live part of the device.

2. If there is refrigerant gas discharged during the maintenance process, do not contact the discharged refrigerant gas. Refrigerant gases can cause frostbite.

3. When disassembling the suction pipe or exhaust pipe of the compressor at the welding part, the refrigerant gas should be completely discharged in a well-ventilated place. If there is refrigerant gas left in the compressor, when the piping is disassembled, the refrigerant gas or refrigeration oil will be discharged, causing injury.

4. When carrying out maintenance, if there is a refrigerant gas leakage, the workplace should be ventilated. When refrigerant gas hits a sparkle, toxic gases are produced.

Generally, the piston inside the automobile air conditioning pump needs to be replaced, and if the air conditioning duct is found to have wear and tear after disassembly, it is necessary to thoroughly clean the air conditioning and refrigeration components before use.

If the motor wiring is reversed, it will be reversed, and the same is true for the air conditioning motor.

Summary. Hello, I am your car master exclusive mechanic at your service. Here's a great day.

The Year of the Tiger is auspicious. We promise to be attentive, careful and attentive to solve your car troubles. Provide you with fault solutions and repair methods for your car.

Hello, friend, your car turns on the air conditioner, the fan will turn, and then after the air conditioner is turned off, the fan is still turning, this is all because the water tank and water tank cooling fan are running, which leads to this problem caused by this position, this is not related, it doesn't matter, this is a normal image.

What happens when the car turns on the air conditioner fan and turns off the air conditioner, and the fan will turn off?

Hello, I am your car master exclusive mechanic at your service. Here's a great day. The Year of the Tiger is auspicious.

We promise to be attentive, careful and attentive to solve your car troubles. Provide you with fault solutions and repair methods for your car. Hello, friend, your car turns on the air conditioner, the fan will turn, and then after the air conditioner is turned off, the fan is still turning, this is all because the water tank and water tank cooling fan are running, which leads to this problem caused by this position, this is not related, it doesn't matter, this is a normal image.

The old Cruze turned on the air conditioner after the cold car started, and the cooling fan was running, but after the air conditioner was turned off, the fan kept turning at low speed and stopped, completely at a low temperature.

In this case, it is possible that your electronic thermostat has been damaged. If this accessory is damaged, it will cause the fan to always belong to this running state, use the computer to do a diagnosis, see if there is a fault, if there is a fault, replace this accessory can solve this problem.

I turned off the engine again, and then started the car fan, and it didn't turn anymore, what's going on.

In this case, it can only mean that this accessory thermostat may have this problem, resulting in this common problem of failure.

There was a situation before that the air conditioner could not be started, and then the space was normal again, and then this situation occurred.

Later the air conditioner started up normally.

This doesn't matter, it doesn't matter, can you check if you have enough antifreeze? Check the antifreeze, if it is enough, there is no need for maintenance.

Won't the fan break when it runs for a long time? Fault codes also did not appear.

If the fan runs for a long time, this life will definitely be shortened, this must be faulty, what should you do if you want to use a computer?

Is it related to the air conditioner pressure sensor.

If you have a pressure sensor, it doesn't matter much, you can turn off the air conditioner pressure sensor when the engine is off, if the fan is running, you unplug the air conditioner pressure sensor and try again.

Yes, there are many reasons why the air conditioning fan of the car does not rotate, including poor contact of the air conditioning switch, damage to the coil of the fan motor, falling off the fan bearing, water temperature not meeting the requirements, etc. 1.Poor contact of the empty switch:

If the null switch is not in good contact, it cannot control the normal start of the car's null switch, and the fan of the car's null switch cannot work because it cannot be connected. This kind of affection.

Yes, there are many reasons why the air conditioning fan of the car does not rotate, including poor contact of the air conditioning switch, damage to the coil of the fan motor, falling off the fan bearing, water temperature not meeting the requirements, etc.

1.Poor contact of the empty switch: If the contact of the empty switch is poor, the normal start of the empty switch of the car cannot be controlled, and the fan of the empty switch of the car cannot work because it cannot be connected. In this case, replace the empty control switch and pay attention to whether the connecting wire of the switch is short-circuited.

2.Fan motor coil damage: If the fan motor coil is damaged, the fan cannot supply energy normally, so it will not rotate. In this case, the coil of the fan motor should be inspected and repaired, and if necessary, it can be replaced directly.

3.Fan bearing falling off: When the fan bearing falls off, only the bearing is empty and the fan cannot rotate normally. In this case, the bearings of the fan should be reinstalled and secured.

4.The water temperature does not meet the requirements: As of July 2019, most of the car fans on the market use electronic temperature control technology, and only the air conditioning system can work normally if the water temperature meets the standard.

If the air fan does not turn because the water temperature is not up to standard, it is normal, just heat the car to make the water temperature reach the normal standard.

What's going on with the car turning on the air conditioner, the fan is loud.

The reason for the high noise of the empty fan when the car is turned on is that the blades of the empty switch exhaust fan are deformed, and it is recommended to replace the exhaust fan; The exhaust fan motor inside the empty switch is broken. It is recommended to replace the exhaust fan. There is a lot of dirt in the air, so it is recommended to clean the air.

Car fans are generally used to cool water tanks.

Whether it's a model or an economy, it's a big fan. Luxury cars usually have two small fans. Luxury car fan, cooling water tank, empty adjustment box in front of the water tank.

The fan drives the air flow to help the water temperature drop, but the lower the water temperature, the better, and the lower the engine temperature, the worse. Of course, the thermostat and the water pump work together, so cooling at a certain temperature is necessary.

The car air conditioning unit is referred to as the car air. This includes general refrigeration, heating and ventilation. The combined device makes full use of the limited empty space in the car, the structure is simple, the operation is convenient, and it is the internationally popular modern automobile air conditioning system.

It is used to control the temperature, humidity, air cleanliness and air flow regulation in the carriage in the best state, provide a comfortable riding environment for passengers, and reduce travel fatigue; Ventilation devices, which create good working conditions for drivers, play an important role in ensuring safe driving. Does the car turn on the air conditioning fan What is the reason why the car turns on the air conditioning fan is loud @2019