In many ways affects the comfort of driving. Climate control is an integral part of any modern car, the advantages of conders are known to many motorists. What to do if the air conditioner does not work on the Kia Rio car, how to refuel it if necessary - read more about this below.
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The main malfunctions of the car air conditioner
Also, each car owner should know how to fill the system if necessary:
- To begin with, the hood opens, and the cap is removed from the main hose low pressure in the climate system. When the pressure is released, the cap installation site must be cleaned, as it must always be kept clean. If debris enters the system through the cap, this can lead to damage to the compressor device.
- Further, on the fitting for refueling (specify in service book) the hose must be installed. The car engine starts, wait about 10 minutes until the engine warms up. Please note that at this stage power unit should run at about 1500 rpm.
- When the engine warms up, you will need to turn on the conder itself, while setting it to recirculation mode and activating full power. Having done this, it will be necessary to open the low pressure valve, at the same time the valve on the antifreeze bottle is also unscrewed. It can open in different ways, but it usually has to be turned down to open it. After the pressure is completely released, the system is charged. Please note that this procedure carried out on running engine, you don't have to mute it.
- When refueling is performed, the car owner must in any case monitor the results of the pressure gauge, in particular, monitor the pressure. During the refueling process, the pressure in the system should not exceed 285 kPa.
- After some time, cool air should begin to flow into the passenger compartment of the car. But his entry into the salon does not mean that the tap needs to be closed. Its overlap is made when the temperature of the air leaving the ducts is approximately 5-8 degrees.
- Pay attention to the filter. If you did everything correctly and did not make mistakes, then a transparent liquid without bubbles should form on it. If this liquid is cloudy or there are bubbles on it, this indicates poor-quality cleaning of the system during refueling. If you want to solve this problem, then it is desirable to repeat the procedure.
Kia Sportage III. AIR CONDITIONING FEATURES - PART 1
On KIA cars Sportage III has a compressor-type air conditioning system. The heater units and the heat exchanger of the air conditioner evaporator are arranged in one block. The controls for the air conditioning system are located on a panel shared with the heater controls.
circuit diagram movement of the refrigerant in the air conditioning system is shown in fig. 12.2.
The piston-type compressor is mounted on the engine block and is driven by a V-ribbed belt.
The compressor (Fig. 12.3) circulates the refrigerant in the system. The compressor shaft is installed in the aluminum front housing cover on bearings and sealed from the side of the drive pulley with an oil seal.
The compressor drive pulley is mounted on a double row ball bearing and rotates constantly when the engine is running. When the air conditioner is turned on, torque is transmitted from the pulley to the compressor shaft through a friction clutch with an electromagnetic drive.
NOTES
If the system is working properly, when the air conditioner is turned on, a click is heard - this is the clutch pressure plate, under the action of an electromagnet, engages with the drive pulley, and the compressor rotor begins to rotate.
But during the operation of the air conditioner, the following compressor malfunctions may occur.
Figure 12.2. Schematic diagram of the movement of the refrigerant in the air conditioning system: 1 - combined pressure sensor; 2 - section of the high pressure pipeline; 3 - receiver-drier; 4 - service valve of the high pressure line; 5 - condenser (air conditioner radiator); b - fan of the condenser and radiator of the cooling system; 7 - air conditioner compressor; 8 - section of the low pressure pipeline; 9 - service valve of the low pressure line; 10 - heater fan; 11 - evaporator; 12 - thermostatic valve
Rice. 12.3. Air conditioner compressor: 1 - pressure plate; 2 - drive pulley; 3 - front cover of the case; 4- block of the electrical connector of the electromagnet coil; 5 - flange for fastening the low pressure pipeline; 6 - valve block cover; 7 - flange for fastening the high pressure pipeline; 8 - fastening eye; 9 - housing of the pump part; 10 - plug of the filling hole; 11 - pressure plate damper
1. If, when the air conditioner is turned off, the clutch emits during rotation extraneous sounds, heats up or a burning smell appears, then its bearing has probably begun to collapse. In this case, the bearing must be replaced. In some advanced cases, it may be necessary to replace the compressor clutch assembly or its constituent parts.
2. If you don’t hear a click after turning on the air conditioner, then the following problems are possible:
A refrigerant leak has occurred and the control system is blocking the compressor from turning on;
The pressure sensor in the system has failed;
Faults in electrical circuits control systems;
The coil winding of the clutch electromagnet burned out;
Engine control unit for any reason ( heat engine coolant, high revs engine) has blocked the compressor from starting.
3. If the clutch rotates easily and freely, but when the air conditioner is turned on, you can clearly hear extraneous noise or even the engine stalls, then, most likely, the compressor is jammed. The internal pump part of the compressor cannot be repaired. In this case, the compressor will have to be replaced.
4. And the last, most unpleasant option. A click is heard, the clutch easily rotates the compressor shaft, and there is no cooling of the air in the cabin. In this case, the compressor runs idle, pumping nothing. Only an experienced specialist with special control and diagnostic equipment can determine this malfunction.
It is possible to determine the cause of the malfunction most accurately after a complete diagnosis in a specialized service center repairing car air conditioners.
An emergency pressure relief valve is installed on the rear cover of the compressor. In the event of an increase in pressure in the system due to a failure of the pressure sensor or other emergency situations, when the set maximum pressure is exceeded, the valve membrane is destroyed, and part of the refrigerant is released into the street. Usually after this emergency valve does not have sufficient tightness. Therefore, after eliminating the causes that caused the increase in pressure and the discharge of the refrigerant, the valve must be replaced.
The condenser (Fig. 12.4) (air conditioner radiator) of a multi-flow type is located in front of the cooling system radiator
engine. It is attached with brackets to the radiator frame. The condenser cells are made of flat thin-walled aluminum tubes with internal longitudinal baffles for rigidity and external fins to improve heat transfer. Tanks are aluminum, with flanges for connection of pipelines and a receiver. The tanks are divided into sections along the height, therefore, passing through the condenser, the refrigerant flow changes direction several times. In the condenser, the vapors of the refrigerant compressed by the compressor are condensed and the heat released in this case is removed into the surrounding air.
When the air conditioner is turned on, the engine control unit turns on the power supply circuit for the electric fan of the engine cooling radiator, which improves heat transfer in the condenser and reduces pressure in the air conditioner system.
Rice. 12.4. Air conditioner condenser: 1 - receiver; 2.4 - condenser tanks; 3 - honeycombs; 5 - pipeline fastening flanges; 6, 7 - lower mounting holders
At least once a year, preferably before summer operation, wash the fin A of the condenser honeycomb from adhering dirt, dust and anti-icing reagents B. This will improve heat transfer, reduce pressure in the system and increase the service life of the system elements. Do not use washing machines with a water jet under the high pressure. This can cause damage to the B thin-walled fins.
Even with regular washing the need to replace the condenser occurs much more often than we would like. The fact is that he is the first to take on the flow of anti-icing reagents, dirt and pebbles from the road. And its tube walls are thin ... In most cases, the condenser is damaged by corrosion in the third or fourth year of operation.
If the tightness of the condenser is broken as a result of corrosion, then it is more expensive to repair it. Even if the master of argon welding manages to patch the hole, a leak may soon appear elsewhere. By the way, the pressure in the system on hot days can reach up to 25-28 bar.
In addition, the complex structure of the condenser tube should be taken into account: along it is divided into channels by partitions, so it is highly likely that after welding, some of the channels will be blocked. Accordingly, the dissipated power will drop and the operation of the air conditioner will deteriorate, especially in traffic jams and in hot weather.
After each experiment with condenser patching, you will need to pay for removal-installation, welding of the condenser and charging the system with refrigerant. So it is better to immediately install a new condenser. Instead of an expensive original one, it is quite possible to buy a cheaper condenser from authorized spare parts manufacturers.
Evaporator.
Manufactured from aluminum tubes with external fins to improve heat transfer. Passing through the evaporator tubes, the boiling refrigerant actively absorbs heat from the air blowing over the outer finned surface of the tubes. The air is cooled and blown into the vehicle interior by a fan.
NOTE
When the air passing through the evaporator is cooled, the water vapor contained in it condenses.
Condensate drains through the drain pipe located on the lower part of the right side of the engine shield, under the bottom of the car. If the ambient humidity is high, a puddle of water may form under the car, which is an indirect sign of the health of the air conditioning system.
WARNING
During the operation of the car, particles of road dust and dirt settle on the outer surface of the evaporator that is wet from condensate.
This layer becomes an excellent environment for life and rapid reproduction of putrefactive bacteria and fungal cultures. Over time, the car appears bad smell. It is especially strong when the air conditioner is turned on and in humid weather.
In order to minimize the risk of this problem, when buying a new car, it is necessary to carry out preventive treatment of the evaporator with special chemicals, regularly replace cabin filter and clean the drain pipe. If, despite the measures taken, the smell still appears, contact a specialized car air conditioning repair service to disinfect or flush the evaporator. In case of very strong contamination, the evaporator will have to be replaced.
Once the prerogative only luxury cars, air conditioning is now becoming an integral part of more and more "conventional" family cars. According to experts, by the beginning of the next century, half of all European cars will be sold with air conditioning as a standard accessory.
The air conditioning system, simply put, removes heat from the air, and also reduces its level of humidity. Therefore, the air inside the car is always cooler and not as humid, which creates a feeling of freshness.
How is the microclimate created in the cabin?
A standard air conditioning system consists of several working nodes interconnected by a sealed system of tubes. It is filled with refrigerant, which changes from liquid to gaseous form and vice versa, transferring heat from the passenger compartment.
most important detail on which the efficiency depends air conditioner operation, is a control valve that is installed on the evaporator located in the passenger compartment. The refrigerant in the form of a liquid under high pressure enters the evaporator through a control valve, where it is sprayed in the form of a gas-drop mixture (fog). The control valve may be needle or diaphragm type. We will consider the first option.
Inside the needle valve there is a small hole, and the needle located in the hole is able to block it more or less, thus changing the effective cross section. The needle is driven by a temperature sensor placed inside the evaporator.
The liquid refrigerant, passing through a small hole in the valve, evaporates and turns into a gas under low pressure. This process is accompanied by a sharp drop in temperature. The smaller the hole, the colder the refrigerant becomes, that is, the temperature in the evaporator can be adjusted by inserting or withdrawing the needle from the hole. The surface temperature of the evaporator must be close to the freezing point of water, but not below it, otherwise ice will form on the evaporator, which will hinder the movement of air and heat transfer to the refrigerant.
As already mentioned, instead of a needle valve, sometimes a diaphragm is installed. There are no moving parts in it, so the flow of refrigerant to the evaporator is not regulated, but its supply is controlled by a thermostat or pressure switch. Having turned into a low-pressure gas, the refrigerant passes through the evaporator (heat exchanger) and removes heat from the air in the cabin. For greater efficiency of this process, the heat exchanger is equipped with fins. The moisture contained in the air condenses on the outer surface of the heat exchanger and drains outside the passenger compartment. The air, having passed through the heat exchanger, returns to the cabin colder and drier.
The heat accumulated by the refrigerant must be released into the atmosphere, for which the refrigerant is sent to the condenser with the help of a compressor (this is another heat exchanger, usually located in the front of the car).
The compressor, whose task is to drive the refrigerant through the system pipes, transferring heat from a low temperature level to a higher one, works on the principle of a pump and is driven by a belt from the engine through electromagnetic clutch to turn off the air conditioner. When the compressor is running, it creates a vacuum that "sucks" the refrigerant gas out of the evaporator.
Inside the compressor, the pressure of the refrigerant rises, and it enters the condenser, but already in the form of a gas under high pressure. In the condenser, the gas turns back into a liquid, while the heat contained in it is dissipated from the surface of the condenser to the atmosphere.
From the condenser, the refrigerant - already in the form of a liquid under pressure - is again supplied to the control valve, and the cycle is repeated.
Additional "gadgets"
In practice, in the described basic schema some other components are included, in particular, a receiver-drier, which is often (but not always) mounted between the condenser and the expansion valve. This device (sometimes referred to as a "battery") filters the refrigerant and removes moisture from it. Sometimes the dehumidifier is supplied with a color indicator that shows when it is time to replace it (this means that it has gained maximum moisture). A sight glass is sometimes built into the pipe system (between the condenser and evaporator), and then the state of the refrigerant can be observed (presence of unnecessary bubbles, etc.).
The air conditioning system also includes a blower that drives air through the evaporator, and a fan with a thermostat that increases the efficiency of the condenser. Typically, the system also includes a pressure sensor with a switch. It is located next to the receiver dryer and controls the operation of the compressor and condenser fan, and maintains optimal pressure in the system (different for different systems).
In most systems, a heating element is also attached above the evaporator. The air flow is distributed between the evaporator and the heater by means of a "mixing damper" in such a way as to give it the desired temperature.
And what about the environment?
Until recently in car air conditioners Freon R12 was used. Then it was found that the chlorofluorocarbons contained in it have a detrimental effect on the ozone layer, so now it is forbidden to release R12 into the atmosphere. In addition, when exposed to an open flame, R12 releases the deadly gas phosgene. It is still allowed to fill them with air conditioners of previous releases, as is the operation of these air conditioners.
Accordingly, the price of R12 freon increases by 5–10% per month. In the end, it will become such that it will become simply ruinous to "recharge" old systems. Already now freon R12 costs $150 per kilogram in the West, and two years ago it cost $65. IN modern systems uses a more "environmentally friendly" refrigerant - R134A.
Systems rated for R134A are designed to be leak-free during maintenance and repair. For this in right places special valves and other devices are installed.
Theoretically, R134A can also be uploaded to an old air conditioner by making the appropriate changes. However, this refrigerant is 15 percent less efficient than R12, so the old type of air conditioner will work worse with it. In addition, there is another problem: R134A refrigerant leaks, albeit weakly, through hoses made of pure rubber. This substance requires special hoses with an internal nylon braid. At the same time, in older systems, so-called "barbed" connecting fittings are used, which are able to break through this braid. In a word, on this moment It's better to use the old refrigerant.
In fact, there are so-called "substitute" refrigerants designed to replace R12 and do not require an expensive reworking of the system to R134A, but, as experts say, they cannot be allowed even a cannon shot to the air conditioner. Some of these substances contain butane, which can ignite inside the system and destroy test equipment.
If you want to switch from R12 to R134A, then it is best to change the oil (mineral to synthetic) in the system along with the refrigerant, install a new dryer receiver, change the rubber hoses and check the operation of all components. Then there is hope that the system will work satisfactorily.
To make everything work
In order for the air conditioning system to work well, you need to be able to handle it. For example, many do not know that the air conditioner will only work effectively when all the windows in the car are closed, as well as the sunroof. To cool the interior faster on a very hot day, you need to open all the doors for a minute or two, and when the car is blown, close everything and turn on the air conditioner (with the engine running).
The drying effect of the air conditioner reduces fogging of the windshield and side windows of the passenger compartment, so sometimes it is useful to turn on the air conditioner at the same time as the stove. True, some climate systems do not provide for the simultaneous operation of the air conditioner and the stove.
The air conditioning system contains oil that circulates with the refrigerant. If the system is left idle for a long time, some of its parts, in particular, neoprene gaskets, dry out and collapse, giving a leak. Therefore, it is advisable to turn on the air conditioner once a week for at least ten minutes, including in winter, so that the oil lubricates all components of the system.
What can be fixed?
Air conditioners are not subject to "home", amateur repair. The refrigerant is a capricious substance, professional equipment is required for its complete pumping out and injection of a new one, and in order to ensure complete tightness, special highly sensitive leak detection devices are needed.
If the air conditioner is broken, then at least some parts need to be replaced, including special pipes and fittings, but there are many of their sizes. And for fastening tubes to fittings, special crimping devices are used.
So, if you have problems with the air conditioner, rely only on specialists. Contact companies that produce complex repair, and not only pump in the volatilized refrigerant. If the refrigerant "left" from the system, then first you need to find the cause, otherwise the new refrigerant will evaporate in the same way!
Similarly, if your compressor is stuck, then just replacing it is not enough: in a few months it will jam again. You must first remove chips and other debris from the system, and then flush it with a special solution or nitrogen. You will also have to replace the receiver-drier (chips remained in it) and pump in fresh refrigerant.
Most often, the capacitor is damaged. It is located in front of the car radiator and is protected only by the radiator grille.
The second problem is the failure of the needle valve (it becomes clogged with dirt). When cleaning the valve, it is necessary to remove dirt from it, and not to push it inside!
There are other problems - for example, the compressor is noisy. Usually, this speaks of his near end.
Easy to check the status drive belt. In some machines, the compressor is driven by a separate belt. This good option. However modern cars often equipped with a long "multifunctional" belt that drives several devices at once, often including a water pump. So, if the A/C compressor drive pulley bearing suddenly seizes, you won't go anywhere until you find a smaller belt to "bypass" the compressor!
Other aspects
If the refrigerant does leak through the rubber hoses, then replacing them is quite problematic, since it is difficult to reliably seal the new hoses on the old aluminum fittings.
Be aware that the air conditioner may not turn on if the ambient temperature is below the set temperature or if the system pressure is much lower (refrigerant leak) or higher than the optimum.
Air conditioning malfunctions are also caused by excess oil, refrigerant, air or moisture entering the system, severe contamination of the condenser or evaporator fins, a malfunction of the car’s cooling system (overheating), and slipping of the compressor clutch.
At Kia car Sportage heating, air conditioning and ventilation are a single complex. Thanks to this, the owner can control not only the temperature, but also the air quality in the car. long and good work this system is provided constant care- cleaning and refueling, thorough diagnostics and professional repair. All these works should be entrusted to specialists - climate control has a complex device, therefore handicraft repair of the components of this system is practically impossible, the refrigerant charged into it is toxic and can cause frostbite.
Symptoms
Signs of a malfunction of the Kia Sportage climate control will be: ∙ No click when the air conditioner is turned on or uncharacteristic sounds during its operation; ∙ Burning smell in the cabin; ∙ Engine stop; ∙ No cold air when the air conditioner is running;
Diagnostics of the air conditioner and climate control
Diagnostics of the air conditioner and climate control Kia Sportage is not carried out independently, even for preventive purposes. And to establish the specific cause of a breakdown and eliminate it, one cannot do without the help of a specialist - skills, experience and special equipment to check the system for leaks, control the operation of sensors and electronic block management.
Prices for diagnosing a Kia Sportage air conditioner
Air conditioner diagnostics
from 700 rub.
Refueling the air conditioner kia sportage
Charging the air conditioner is the most common procedure for servicing the air conditioner, which is not limited to just replacing the refrigerant. Before filling the system, the masters in the car service will check it for leaks using special leak detectors, measure the pressure, and, if necessary, flush the radiator or carry out antibacterial treatment. It is important to remember that the air conditioner should be charged with the refrigerant recommended by the manufacturer - otherwise there is a risk of system malfunction or damage to its elements. Freon level control should be regular - without this, there is a risk of climate control failure due to its lack.
Prices for refueling air conditioner Kia Sportage
Refueling the air conditioner
from 1"500 rub.
Air conditioner cleaning kia sportage
Regular cleaning of the Kia Sportage air conditioner is necessary to prevent bacteria from multiplying in the system, which not only lead to bad smell, but can also contribute to the development of diseases. Some motorists prefer to carry out this procedure before starting summer season when the air conditioning system is used most intensively. Work on cleaning the air conditioner may be limited to antibacterial treatment of climate control, or it may represent the dismantling of the entire system with the cleaning of its components (from the radiator to the tubes) and the replacement of filter elements. Like any other air conditioner maintenance procedure, it must be cleaned in a car service where there is necessary equipment and experienced craftsmen.
