Climate control system is one of the most complex car control systems, both from technical and an electronic point of view. In essence, it combines several different devices (salon heating system, blower, air conditioning system), which in former times were controlled by numerous switches, regulators and buttons. In climate control enough to ask comfortable temperature, and "brains" with the help of electronic valves, servo drives, couplings and other increments in a couple of minutes will create pleasant weather in the car's cabin. But, as you know, you have to pay for everything. First of all, constant service and expensive repair.
To start a bit common technical information. The most complex device in climate control is naturally air conditioning. On the principle of work, it resembles a conventional refrigerator. The compressor translates the working mixture (refrigerant) into a liquid state. Then in the evaporator there is a reverse transformation of liquid gas, as a result of which, according to the laws of physics, cooling occurs. So, if we compare the refrigerator with the compressor, the last time is five more powerful. That is why, including air conditioning, there is a power loss and a decrease in engine speed. By the way, one of the functions of climate control - an increase idling Engine when you turn on the air conditioner. Constructively, the air conditioner system is a bit scattered by car. One of the most common schemes is shown in the figure (on the example of Peugeot 307 1.6 2004). Fig.1
The compressor and evaporator mentioned above are elements 1 and 11, respectively.
A bit simpler, but no less caprinis, a blowing system. Previously, who remembers, there were several main modes of blowing: on the windshield, recycling, the inflow outside, under the feet, on the driver, etc. Now you can set the climate-mode to a specific passenger. Moreover, the climate control computer itself will initially turn on blowing windshieldif it mobbed either covered with it. As a rule, the redirection of air masses is performed using numerous servo drives that control valves. The thing itself is not very reliable, often stick, especially when driving on a dusty road.
Finally, the heating system, simply the stove. Here everything is clear: an additional radiator in the cabin, allotted from the engine cooling system, plus a fan. Most weak spots - The fan motor (brushes and bushings) and the electronic unit for adjusting the air injection rate (RESOOST and powerful transistors).
It's time to move to the features electrical circuit. Fig.2
As an example taken vOLVO car S80 2005. (here at least not so faded). The A500 scheme is a cabin fan control unit, often it is part of the climate control control head unit. Control powerful transistors inside the block are often overheated and fail, therefore it is easier to change them when such a block is made separately, as in this embodiment. Domestic analogues of these transistors are short-lived, it is better to change the block entirely. A510 is a multifunctional block, often called the comfort unit. As can be seen from the scheme, it is associated with the CAN-bus climate control unit A62. It is according to it that control signals are transmitted. This bus communicates with the passenger door A520, the steering wheel A70 and the temperature sensor of the B506 salon. Fig. 3.
The cooling fan of the A502 engine is also included in the climate control system. It is involved even with a cold engine in case of hot weather. Fig.4
M500 - Salon Fan Engine. M512 - servo drive of the legs, M507 - windshield, - left side, M509 - right side, M510 - recycling. In this model, only five servo drives are controlled by air streams. Each of them includes electronic, mechanical parts and directly the electric motor itself. In case of refusal, you can try to clean from dust and separate the drive (usually it happens in the extreme positions of the flap). It is easier to change the whole. B500 - Sun sensor, serves to send a greater jet of air to that part of the cabin, where hotter. Moreover, there are climate control systems with gaspace sensors ambient. For example, you are standing in a traffic jam around smoke, then it switches the system for recycling. B511 - cooler temperature sensor.
Fig.5
Y500 - Compressor Electrical Food. This is the main device that includes air conditioning. Electrocompressors are used in domestic air conditioners. In cars, the compressors are driven by means of a power outlet belt from the engine. And take up to 10%. The copsors are three types: axial-piston, rotational-blade and piston. When replacing them, it is desirable to change to a similar one. B22 - Cooling fluid temperature sensor. B526 - Pressure sensor in the air conditioning system. It is he who blocks the inclusion of an air conditioner with an insufficient or excess amount of freon in the system.
Finally, the main thing - maintenance and repair
I am an autoelectric itself. And often come across the situation when a car comes with a hundred, where he was refueling the refrigerant. The car owner says everyone weighed, checked according to reference books, all about-kei. And the air conditioner does not work. The master sent to auto electricians. What are we? We drove diagnostics, we have everything about-kei. Check the pressure in the system we have nothing. And begins kicking owner in a hundred. Therefore, Tip: Play Freon only on solid stations, where there is your own electrician or at least diagnostic equipment. Now in order.- Control the amount of refrigerant at the beginning of each season. It performs not only cooling, but also lubricating (compressor) and anti-corrosion functions. The incompleteness of Freon is destroyed, but its excessive amount leads to an increased load on the compressor, respectively, it is in order to leave it, and it is worth it a lot. I recommend to replace the compressor if necessary to buy a refurbished used compressor, and not his Chinese "analog".
- Follow the tubes and the air conditioner radiator, even for the soft parts of the car, did not subjected to additional corrosion, rinse the radiators in a timely manner outside, but not the high pressure pump.
- If the system is deployed, immediately should be applied to the service station and eliminate the fault, otherwise water, salt, dirt, microorganisms begin to enter the system, corrosion will begin. The receivers can generally throw out the filter and silica gel inside it will be unusable. Methods for finding the place of damage (their many - vacuum, ultraviolet halide, etc.) are quite complex, it is better not to try.
- Follow the condition of the pulley belt and the compressor bearing. The latter may be unusable after 5 years of operation.
- Turn on periodically air conditioning, even in the cold season, so that the refrigerant disperses lubricant throughout the system. Often in the frost, the icing sensor does not give it to do, beat then in a warm garage, washing, wait for the thaw.
- Once a year, and in the countryside and more often, change salon filter. Dust, scored in the condenser, the fan of the cabin and servos, can lead them out.
- If in the cabin when turning on the fan, the blowing is heard foreign noiseEven worse there is an unpleasant smell, immediately proceed to its repair. Typically, the noise causes an erased electric motor sleeve, the smell - developed brushes. All this is easy to change. Sometimes the reason for the failure of the salon blowing system is a fault of the risk (systems of powerful low-level resistors). They should be replaced.
\u003e I consider climate control
By finding climate control
We are considering the climate control on your own.
On old cars, not quite old, but good and reliable, which are still running, which are created, good and reliable japanese hands, Some sores appear. For example, the temperature climate temperature control is poorly adjustable, or the fan turnover of the stove. Do not hurry to disassemble or to order spare parts, for the new climate block. On the disassembly, such a fuflot can be slipped, and the problem will not disappear. And in the store you will faint from the cost of this block. We will try to figure out what.
Carefully consider how the climate control knobs look closely. If they are made in the form of engines (moving to the left - the right) and when you press a knob, the climate starts to work normally, then you are lucky, there is a chance to fix everything with your own hands.
To do this, we need two screwdrivers, flat icrest, rosin, solder, soldering iron, magnifying glass. If there is no magnifying glass, it is not trouble, you can break the grandmother glasses, and pull out the lenses from the rim. Grandma will survive without glasses, and you will freeze in winter without climate! Which of you are worse? If there is no grandmother, you can try to take away from the grandfather, although it can also crack a good stick. If there is no lenses in the house, then it will have to buy or strain your own eyesight.
A specific example of climate control is the control of the old good Toyota ipsum. He did not work the heater speed regulator, or rather he worked, but he was constantly kept with his finger. What caused some of the employment of driving a car. For the beginning it is necessary to extract the climate control from its nest, in which it is firmly sits. We open the cap on top and turn the two self-tapping screws, and we break all the cladding around the radio, climate and the mailbox itself. It is not worth it, we should not put it back.
We turn over the three coils and pull out the climate itself from his Logov. Touch the connectors, remember that it is not necessary, there is no protection from the fool, and the connectors do not confuse the connectors. We will not confuse the back of the block and turn out another three golden screwdrings. Wonderful picture! A bunch of tracks that are unknown where, some sticking legs, and a lot of multi-line who bind these legs with the roadways. Already the eyes are running out, but we are specifically interested in only three or six, for loyalty. 
We are determined with the number of time that we can spend on troubleshooting. If it's a lot, we take a soldering iron and stupidly disappear all the places of soldering except this. There are no problems. If time is not enough, then we take a magnifying glass (magnifying glass) and carefully consider that part of the board to which regulators are soldered. We can easily determine if you turn the board and look at the front side. And detects the soldering Here is a defect-ring crack. Having a soldering iron in the hands of a soldering iron, making it in the rosin pecking this place as best and go to the next one. Returning all visible defects, it is desirable to sue a second regulator, just in case, it will not be worse, and you do not have to disassemble the climate block. 
Having finished working with the soldering iron, if you do not know how to solder, then it is better to train on cats, or rather on unnecessary boards, and then repair the electronics of the car, take a little alcohol and ...... .....
You do not need to drink it! It's too early to celebrate the birthday within you the electrician. Make a cloth into it and wash the remnants of rosin from the board. It will not work for this thing, and then it will be the car. Machy unnecessary rosin, if you need to change the climate lighting light bulbs, We collect everything in the reverse order.
We introduce this device to the machine to the car, do not forget to connect the connectors, and then it will not work at all. And checking how it works, we collect the torpedo turned inside out in the reverse order. And we enjoy the normally working climate-control.
Modern cars for the most part are equipped. These very well-proven convenient systems allow at a given level, which contributes to security. roadSince the driver no longer needs to be constantly distracted from the vehicle management, changing the parameters of the blowing and temperature. Itself determines which of the aggregates is needed or air conditioning) depending on the temperature of the cabin. All this is due to the coordinated operation of the sensors and the drives of the control climate. Most automatic systems use motor devices (drives) to control dampers.
They are equipped with five-pin electric motors (with feedback) To transfer information about their position. Sensors are installed both inside the car and outside, for instant reaction to any temperature changes. In more complex systems, infrared sensors are installed, measuring the body temperature, and solar sensors to compensate for sunlight entering the interior through the glass. The Climate Control Module controls is a computer that responds to the data included in it.
Diagnostics
Accurate diagnosis is very important, because many spare parts can cost expensive. The most expensive will be the module itself, but the sensors, switches, relays, etc. will not lie in a large cargo on the family budget. - A rather complex mechanism consisting of many components, and you need to understand which one works incorrectly. Most systems have their own malfunction scanners. To activate, you need to press keys in a definite order (this information can be obtained from the instruction manual for your vehicle), for different cars Combinations are different. So that the data was more accurate, the scanning must be carried out on the engine manner.
After pressing certain combinations, the computer will generate a malfunction code, and on the table of the codes you will easily determine the faulty section. But do not rush to replace the "faulty" module. You need to check the cables of the terminal (often the terminals are oxidized, and the contact is weakening), perhaps the problem is in them. With a broken display or display on the block itself, you need to check the availability of power at the entrance to it. If there is no power, you need to check the safety of the fuse and wires on the path to the bu, possibly short circuit or wiring break.
Repair block climate control
After a thorough diagnosis and detection of the cause of the fault, you can start repairing. Since the dear control unit itself is not always available in the store, you can try to restore the faulty module. This repair will cost much cheaper and will require less time. For repair, we will need to remove a faulty unit.
I went to the avant-garde car service two years, while I lived nearby, then I moved to Balashikha, went to the local tire, then to change the oil on another filter oil. And every time something is wrong, minor shoals will calm down ... Returned back to the avant-garde, let him go longer, but they do the conscience here, never had problems.
Anastasia
I want to especially praise dry cleaning "avant-garde"! It had the opportunity to compare with several competitors, the prices are about the same, but the quality of work is not to fall, nor a hint of dirt, everything is clean, fresh, nicked! Salon as new!
Denis
In our avant-garde, two family machines, my Mercedes and Lexus Wife are serviced, we are very pleased. And then we go through, and already repaired anything (to the honor of the masters - what they finished, then no longer arouses complaints), and my engine somehow came through. And the tires are kept here, otherwise there would be no two sets. We sincerely recommend great service!
Pavel
Thank you, guys! I took the week to the diagnosis, the silencer began to "roar", although she also did not pass the year, as it completely changed. Conducted diagnostics in 20 minutes, everything is clear. Found where the root is small, everyone eliminated. They explained why this happens that I probably go often and not far that the car works at idle and there. It's good that I immediately arrived, until the way is small, otherwise I would have to change everything. Five for professionalism and speed!
Sergey
Screw automatic transmission front drive, Suddenly, without warning. Found in Yandex the nearest service, called and so what to do? They say everything is OK, now the evacuator will come and take, do not worry, reproducing. I thought it would be more expensive, but it turned out quite acceptable. Thanks "Avant-garde," then they made a general diagnosis, they found several problems, now I will slowly.
Dmitriy
I am in the "avant-garde" reprogrammed the ECU on Skod after one craftsman. The machine is old, and you could add functions, bay fresh firmware. But something did not come out, and in fact a bunch of bugs appeared, the errors are glowing, the electronics is buggy. Allowed everything to the original version, they checked for sure there were no problems. I am satisfied with the quality of work. I will come back.
Nikita
The first time came to the avant-garde almost by chance, in the fall, it was necessary to urgently rebuild, and everywhere turns, and I had to go far. Already after 7 pm, I called, I say, so, I am looking for an urgent tire to change, I have been told, we work to 21, have time to come, we will come. I remembered, managed. Soon I will pass the seasonal, now I'll go to the avant-garde right away, I liked the service.
Maxim
Avangard appealed to the technical center after a small accident, compared offers. I really liked that you can send a photo, and the photo is assessed by repair. No need to ride, nor describe on the phone "Well, there on the wing, and on the bumper evenk." Very professional approach! The price arranged for me, after 4 days I had already taken the car, there was no trace from the blow!
Alexander
Serve our avant-garde corporate cars, I like that with any problem you can contact, and everything is solved in one place, although auto different marks and models. They called - agreed - they drove, they went through, somewhere repairs made. And at the price it is profitable for us. We sincerely recommend.
Purpose.
Climate controlAlso implies measurement and maintaining in the specified limits of air parameters in rooms: temperatures, humidity, composition.
Main goals:
- creating for a short time and maintaining the operation time of installation is comfortable for a man's temperature.
- energy savings spent on creating and maintaining a microclimate inside the car's cabin.
Features of work climate control car .
For maintenance of maintenance constant temperature Used electricity on-board network car and kinetic rotation energy crankshaft To drive the air conditioner compressor. The climatic installation reads the temperature tests from the sensors installed at the outlet of the air flow into the cabin auto and adjust the air temperature by changing the power of the heater or the air conditioner evaporator. Automotive systems Maintaining temperature in the cabin can be automatic and with manual control. Automatic systems Call called " climate control ".
Main reasons breakdown climate control .
Simplified scheme of elements climate control
Climate control car - A complex integrated system consisting of a variety of measuring sensors and actuators. As executive mechanisms use stepper motors or micro motors with position sensors. All these devices have a fully defined resource of work and after a certain time there is a refusal to work climate control regulators. Everything unsuccessful attempts Regulations are displayed on the diagnostic equipment monitor. Often it is possible to renovate motors of damper management , Having gone to them. As a result repair climate control - This is a complex and multifaceted task, the solution of which is impossible without special equipment.
Diagnostics and repair climate control car.
Like any complex climate control system needs diagnosis. Modern blocks The control is made on the basis of a microprocessor and allow you to read errors and parameters of all elements of the system using special equipment. Thanks to the constant influence of negative external factors, the electronic control unit of the climate installation unit of the car often fails, demonstrating complete or partial not working capacity. Modern diagnostic equipment allows you to accurately determine the problem of malfunction. To find faults, I use modern methods and dealer literature. This approach allows you to quickly and efficiently eliminate the fault.
Fault Statistics Climate Control car.
Micro Motor Aerial Controller - frequent cause Fault
During operation with electronic blocks of the car, a rich statistics for the repair of the latter are accumulated. The most frequent malfunctions in climatic installations - This is a jamming of the motors of the air damper position, which arises due to excessive wear of the executive mechanisms.
The second one for the likelihood of a malfunction is malfunction of autoconditioner Or the need for it in refueling, the insufficient efficiency of the salon heater is also often found, in these cases the electronics due to insufficient power / cooler power simply cannot set the desired temperature and therefore gives an error.
Conclusion.
To accurately determine the malfunction and subsequent efficient repair, the car control climate requires an in-depth diagnostics of the air conditioner / heater and electronic block. Without reading diagnostic parameters, it is impossible to correctly define a defect, especially if it has a floating nature.
