Named the most common problems when using car air conditioning. Examples are also given of what the consequences are and how to avoid such situations. Video review at the end of the article self cleaning conditioner.
It is almost impossible to imagine a modern car without air conditioning or climate control, although some brands still save on this. According to reliable data from SEAT researchers, driving without air conditioning significantly reduces the driver's attentiveness than at a comfortable temperature of 25 degrees Celsius. Some experts compare the state with alcohol intoxication, which over time only worsens the health of the driver and passengers.
Not less than important point correct use air conditioner, as this affects not only the health of the driver and passengers, but also the air conditioning system itself. The most frequent and most common mistake of using the air conditioner with open windows and doors. The reason for this is simple, many people think that by opening the window, more fresh air will enter the cabin or thereby create comfortable temperature. No matter how trite it sounds, but SEAT specialists have found many such drivers who have no idea that you can adjust the temperature without opening windows or doors.
The consequences of such a situation are the most banal, firstly, you can get a cold in a couple of minutes, and secondly, there is no fuel economy at all, since the air conditioning compressor is constantly in operation, and sooner or later it will lead to deterioration. Thus, it is worth understanding the principle of operation of a car air conditioner, and what factors affect its operation.
Second common mistake in use - turning on the air conditioner at full power after getting into a hot car. According to SEAT engineers, turning on the air conditioner in this state will not give you the desired effect, since it will simply drive hot air around the cabin. In addition, the load on the evaporator of the air conditioner is maximum.
In this case, it is recommended to open all doors or windows for a few minutes to let in cool air (in the hottest weather, the air in a standing closed car is hotter than outside). Only after that close all windows, doors and turn on the air conditioner for cooling.
Disabling air recirculation in the passenger compartment, in this rating, she is assigned the third place. The situation is quite two-faced, as there are cars with air conditioning, where there is an auto function. In this case, the system will independently decide how much to close or open the damper to maintain a certain temperature in the cabin.
Another mistake drivers make during cool weather. There are situations when the external temperature is lower than the temperature in the cabin. In this case, it is easier for the driver to turn on the air conditioner, although it would be more correct to open the window. In this way, you will not only save fuel, but there will also be less load on the car engine itself.
Not only beginners make mistakes with air conditioners, experienced drivers also make similar mistakes. An example of this is the 5th mistake, when turning on the air conditioner, the air flow is directed to the face of the passengers. It is very easy to get sick in such a situation, especially if you have been in the sun before.
For better air circulation and quick cooling of the interior, it is recommended to direct the cold air flow from the air conditioner upwards. According to the rules of physics cold air will sink down, thereby mixing with warm air and faster, regularly cooling the interior.
The last mistake most often made by owners of cars with air conditioning is untimely maintenance of the system and replacement of filters. According to the rules, the air conditioner filters are replaced every 15-20 thousand kilometers of the distance traveled. Similarly, you should not leave aside the situation when the air conditioner has become poorly cold or does not produce cold air at all.
It is worth remembering that depressurization of the car air conditioning system can lead to significant damage, especially in the case of high humidity environment. Most often, the compressor fails, and the price of a new one often starts from 300-400 euros. No need to be lazy to go to the service to check the air conditioner, thereby saving yourself from subsequent problems and financial waste.
Video review of self-cleaning car air conditioner:
Young drivers may already be unaware of how it is to drive in a hot summer car without air conditioning. Previously, the cooler in the car was the subject of chic, and today it is even included in the basic configuration of many inexpensive models. But any breakdown of the air conditioner, and in terms of comfort, we roll back 20-30 years ago. Like other components of the car, the air conditioner, according to the law of meanness, fails exactly when it is needed most - in the very heat. We found five reasons why the air conditioner blows warm air into the cabin.
1. Not enough refrigerant
This is the undoubted leader in the number of problems with air conditioning. Poor cooling or not working at all? First of all, you need check freon level. Alas, it will not be possible to do this on your own, without special equipment, however, having sensed the demand for such services, car air conditioner maintenance workshops began to open everywhere. Yes, there are workshops, sometimes a compact filling device is bought and services are provided on roadsides and parking lots. This is us to the fact that it is not difficult to find a place to check and refill freon. The only exception is very old cars that are designed for R12 freon, a workshop that works with it is not easy to find today, but equipment for R134 is everywhere, you can check the level and refuel without problems. Such a service costs 1000-2000 rubles.
Another question is where the old refrigerant disappeared. If the last time the air conditioner had to be filled more than two years ago, then most likely you should not look for any additional reasons. This is either natural evaporation, or such a microscopic leak that no one will ever find it. Another thing is if there is not enough refueling even for a year, then there is definitely a “hole” somewhere in the system. This is determined at the service, freon is poured into the system with additives that glow in the ultraviolet. Then you just need to look at the engine compartment with a special “lantern” in order to understand where the “siphonite” comes from, and then, according to the diagnostic results, either brew (argon welding is needed) or change the tubes.
2. Weak condenser cooling
Anyone who, at least in general terms, represents the operation of an air conditioner (and not only a car, the principle of operation of all cooling devices is the same), understands that there will be no coolness in the cabin without freon cooling. In a car, cooling takes place in a condenser, which is called a radiator in slang. It is located in front of the main radiator and is the first to meet the flow of incoming air, which helps the standard fan cool the freon.
There are two reasons why cooling will be insufficient. Either some problems with the fan, or the condenser is clogged. As with any electrical device, possible problems with a lot of fans. This is the failure of the motor, and problems with wiring, and insufficient voltage, and the absence of a "mass", and a blown fuse - in general, the diagnostician has a place to turn around. True, the fan itself easily detects itself. When the air conditioning compressor starts, the fan must turn on at the so-called first speed. If this does not happen, then you can not look further until the fan is running, the air conditioning system is useless. And then either go to an auto electrician, or arm ourselves with a tester and start calling everything to determine the cause. Please note that it is the first speed that is needed, the fan can, for example, turn on at the second speed, but this will not help without constant operation at the first speed.
With a clogged condenser on the one hand it is easier, but not on the other. It’s easier in the sense that you don’t need to diagnose anything, you just need to take it and mechanically clean it. The difficulty is that the layout of many cars is such that for this procedure you will have to disassemble half of the “front end”, at least remove the bumper - just stick the Karcher hose and blow it out, moreover, you can damage the honeycomb. But, in any case, the problem of a clogged condenser can be solved independently and without specialized equipment.
3. Compressor failure
If checking the level and cooling of freon did not give anything, then it's up to heavy artillery - reasons that are more difficult and expensive to fix. First on this list - compressor failure. It often happens that trouble does not come alone, compressors just fail due to a lack of refrigerant or its poor cooling, because they also do not work in normal mode and receive little lubrication (grease is added to freon, little freon - lack of lubrication) . Compressor repair is a thankless task, this is a rather complicated device, and you need both skill and spare parts. If the compressor is out of order, then it makes sense to consider buying a used copy for disassembly. The compressors of most cars have a decent resource, so even a hand-bought copy can last a long time, although in any case it’s a pig in a poke that can only be checked by installing it on a car, so we don’t agitate anyone for this solution to the problem.
In addition to the compressor itself problems may be with the electric clutch and pulley. The clutch has electric and mechanical damage, and repairs are usually complex and expensive, rarely anyone repairs the clutch. In pulleys, the weak point is the bearing, which can fail at any time. The saddest thing is if it blocks, then the drive belt almost inevitably breaks and the car owner gets a bunch of additional problems, but the creak and rattle that accompanies, for example, water ingress, is also a very unpleasant thing. Just the bearing in the pulley on many cars can be changed without problems, and even on your own, you only need pullers and a press. And you also need to be careful, if during the pressing and pressing in the pulley is slightly damaged or bent, then such a compressor will no longer work.
4. Damaged wiring
Violation electrical circuits- the breakdown is banal, but very nasty, and most importantly, no one is safe from it. There are a lot of electrical components in the air conditioning system, each has wiring, plus control pressure sensors, without their correct readings, don’t expect coolness in the cabin either. The traditional diagnostic problem of electrical breakdowns is a huge number of potential diagnostic sites. As they say, call and call. Fortunately, according to reviews of air-conditioning mechanics, electrical problems do not occur so often, so it is necessary to audit half of the wires in the car only in case of great need. But this can also happen, and then the repair can be very unpredictable in terms of timing and duration.
5. Dampers and stove controls
Formally, this reason does not apply to the air conditioning system, but it fully fits the conditions that we put in the headline - warm air can blow from the air conditioner, provided that it is fully operational. Even in a simple, manual car stove, various flows are mixed by blocking some air channels and opening others. In climate control systems, where everything works with the help of servos, and even under the control of this electronic “brain”, this “maze” can be very complex. AND violations in the system lead to unpredictable consequences.
In terms of detecting and correcting problems, electronic systems turn out to be more convenient, primarily because any, even the most ancient climate control, has verification and self-diagnosis systems. If the climate unit is working, then with a high degree of probability it will be able to tell which circuit is broken and where to look for the jammed damper. True, the repair and replacement of the unit itself can cost a pretty penny.
With mechanical air conditioners, you will have to remove the dashboard, disassemble the stove and look for a torn cable or a jammed damper on your own. This procedure is almost always more time consuming. True, you don’t need great skills for such work - it’s enough to read on the Internet how to remove a dashboard and disassemble the stove for specific model auto, overlaid with tools and find the problem. It only takes time.
Dirty damper and gear drive. Photo — drive2
Repair of the air conditioning system is better not to postpone until later. Every day in the heat is a blow to comfort, and the later you solve the problem of air at the wrong temperature from the nozzles, the longer you will have to suffer. By winter, it makes no sense to repair the air conditioner, if everything has not been done before the end of the season, it is better to start a new circle in the spring.
As for the possible causes and repair technologies, everything is the same as with other elements of the car. We consider the reasons for popularity from frequent to rare, exclude options and by brute force we come to the true culprit of the breakdown. Repair or replace part? Do it yourself or go to the service? Alas, it will not be possible to answer these questions unambiguously for all drivers - the input data is too different. But understanding the problem and self-diagnosing a breakdown is already half the battle on the way to returning coolness to the cabin, even if you then contact the service with a problem.
Any climatic equipment is created, first of all, for cooling of air indoors. But sometimes she fails. Why is the air conditioner blowing warm air in the apartment? Such a question can often be heard in a service center where users contact after a malfunction has occurred. There are many reasons for the incorrect operation of the split system, but in this case there are no more than a dozen of them, which will be discussed in this article.
Before drawing conclusions and seeking help, it is recommended that you independently analyze the performance of your split system. So, in addition to the equipment itself, the creation of coolness in the room is influenced by:
The period of operation of the air conditioner. Users often think that air exchange in such devices is instantaneous and coolness should come immediately after turning on the split system. But it's not. It takes from 10 to 20 minutes to cool the room, depending on the performance of the device, the area of \u200b\u200bthe room and the outside temperature.
The ratio of air conditioner power to external parameters. The air conditioner will blow warm air if it has a low capacity. A device of low power, of course, will not be able to cool a spacious room, especially if it is hot outside. When choosing a device, buyers often take the device according to average external parameters, and lose sight of the fact that the load can be peak.
Room insulation. A split system will not cool the room enough if doors, windows are ajar, or ventilation is turned on. This phenomenon is quite acceptable, since there is no sufficient forced air exchange created by the split system itself.
The appliance blows heat due to a “blocked” inlet and outlet. Poor circulation and, consequently, lack of coolness may be due to obstructions in the form of curtains, blinds or excess furniture.
If the performance of the air conditioner corresponds, the air passages are free, the doors and windows are closed, but still, the unit blows heat, then there is a malfunction in the equipment itself and it is necessary to diagnose it.
And you need to start with measuring the temperature at the inlet and outlet of the air conditioner. The initial temperature should be checked next to the air intake grilles, and the final temperature should be checked in the air stream leaving the indoor unit.
Important! You can not check the degrees by installing the thermometer inside the device case, as it can break from the rotating fan impeller.
If, after measuring the indicators, the indicators do not correspond to the required values \u200b\u200bin 7-15 ° C, then it means that the reason is some kind of internal. Such a difference may be slightly different, depending on the manufacturer and brand of the air conditioner (you can check in the device passport).
Why does the air conditioner blow warm air - common malfunctions
Sometimes it happens that the air conditioner blows warm air, but some defects can be fixed on your own. The table below lists common flaws and how to fix them.
| Symptom | Possible malfunction | Solutions |
| The air conditioner blows heat (on appliances with heating settings) | Wrong mode set | Set the desired function |
| No coolness, cooling is weak | The filters of the internal module are clogged with debris | Clean or replace filter elements Important! Apply hot water when cleaning it is impossible, as it can deform the filters. |
| Split system does not cool well | High temperature set during settings | Turn on the minimum, and then switch to a comfortable temperature |
| The air conditioner works but does not cool | Fan mode enabled | Adjust the correct mode |
| Weak blowing from the air conditioner, while the compressor turns off | Clogged external radiator. A layer of dirt has formed on the heat exchanger, which reduces the cooling capacity of the air conditioner. | Clean out the radiator |
| The air conditioner blows hot air. Compressor turns on for a short time | Low mains voltage. Insufficient voltage often causes the rotor to overheat and shutdown the motor due to protection. | It is recommended to turn on the device only through a voltage stabilizer |
If the elimination of the listed problems did not help and the cooling situation did not improve, then most likely the problem is in the hardware design. And here a complete diagnosis is needed, which can only be carried out by specialists in a service center.
Timely service - a guarantee of serviceability
When buying an air conditioner, many do not seriously think about regular maintenance of this equipment. Why carry it out?
Firstly, this must be done in order for the split system to maintain its resource and have to be repaired as rarely as possible.
Secondly, periodic maintenance of the equipment is necessary to maintain the power of the unit, since over time its losses are inevitable and as a result warm air will come out of the air conditioner.
Third, if the unit fails due to poor inspection, then this will not be a warranty case and you will have to pay for repairs.
Obviously, without systematic maintenance, the operating period is reduced, and this is due to the fact that:
1. When the fans are running, dust is sucked into the air conditioner. And without regular cleaning of the split system, it will cover with a layer all the components of the air conditioner: radiator, heat exchanger, drainage outlets and, first of all, - air filters. When the condenser is contaminated and, as a result, due to a decrease in the refrigerant supply, the load on the compressor increases, which directly affects the service life of this unit.
2. Another important factor for regular maintenance is that warranty repairs exist only for factory defects or poor-quality installation of equipment. The law on consumer rights clearly states that "defects caused by improper use of the goods are not subject to free repair." And the prevention of climate equipment is necessary condition when using this equipment.
What should the specialists from the service center do during maintenance? After all, it is well known that the user is only allowed to clean or change air filters.
Maintenance of the indoor module includes:
- Cleaning the heat exchanger.
- Cleaning the drainage system.
- Diagnostics and revision of electrical communications.
- Fan cleaning.
Preventive inspection and repair of the outdoor unit includes:
- Fan cleaning.
- Refilling with refrigerant.
- Air conditioner cleaning.
- External inspection and control of electrical devices and connections.
In some service centers, maintenance of climate equipment is scheduled twice a year: in spring before the onset of heat and in autumn - after the end of the summer season. But even if they do not make rounds, it is recommended that the user of the split system at least once a year call specialists from service department. And then the climatic equipment will serve you for many years, maintaining comfort and coziness in the apartment.
In order to understand what a greenhouse is, you just need to get into the car on a hot day, after leaving it under direct sunbeams. Of course, this effect is familiar to every motorist. To solve the problem, some people buy a car with a light body, others apply tinting to the windows or use special devices to protect the interior from direct sunlight. But in fact it is difficult to call a real way out of the situation.
The only one correct option– installation in the car. Owners of cars with such equipment, as a rule, turn it on immediately after they get into the car. During the first seconds, the air conditioner blows warm air, but sometimes this time is delayed and you already understand that something is not working properly.
The disappointment can be quite serious. Of course, in such cases, you can go to the nearest service station and entrust the repair of the air conditioner to specialists. But let's try to figure it out on our own. So why car air conditioner can it blow hot air?
The most common problems that you can fix yourself:
- blocking or failure of the capacitor (condenser);
- failure of fans;
- lack of refrigerant.
The condenser in the air conditioning system is very similar to the radiator and is mounted at the front of the car. It is used to cool hot compressed refrigerant to ambient temperature. If this does not happen, warm refrigerant will move through through the expansion valve. As a result, instead of cold air, hot air will enter the cabin.
Since the condenser is located at the front of the vehicle, it can become clogged with road debris such as leaves or plastic bags. A quick visual inspection and removal of any debris that may be blocking the air can often help restore air conditioning performance.
Since the capacitor is located at the front of the vehicle, stones and other hard objects can also damage it. If the area of damage is large, you will have to replace this element. As a rule, there is no need to do this in the service, since it is quite possible to replace the capacitor with your own hands.
In many cases, this part is attached to the car body with a few bolts. The condenser is connected to two refrigerant lines that can be easily removed. If no damage can be found, this can be done with a UV dye that is added to the air conditioning system to identify the puncture site.
Another reason why the air conditioner does not cool the interior of the car is a low refrigerant content or a simple freon leak. Before it is very important to make sure that the system is tight.
Also, the air conditioner blows warm air if the cooling fan breaks down. The condenser is only able to cool the refrigerant if it receives enough air. When driving at low speeds or during stops at traffic lights and traffic jams, the fan provides the air supply necessary for correct operation air conditioning systems.
Over time, this fan may wear out and stop working. The fuse may also be blown. When checking the fan's performance, be very careful, because it can start spinning at any moment!
In most cases, the cause of a malfunction can be found with a simple visual inspection. If you can’t achieve the desired result, it’s time to go to a professional service.
Although in modern models air conditioners and split systems provide for a heating mode, yet most users use equipment only in summer for cold. Therefore, the equipment has a downtime period. But then the hot time began, you turned on the air conditioner after the winter and found that:
- split system does not cool, but blows warm air;
- the air conditioner started up, worked and stopped cooling, now the air conditioner blows heat, and the temperature in the room does not drop.
We have prepared an article about the reasons why the air conditioner blows, but does not cool the air, to help you understand the situation and decide whether to call the master.
Is the air conditioner really cold? We carry out diagnostics
Before looking for problems in the split system, check for external causes that are not related to the equipment. In addition to the cooling capacity of the air conditioner itself, the cooling of the room is affected by:
- Hours of operation of climate control equipment. Customers often forget that when an air conditioner is turned on, it does not instantly cool the air in the room. It takes 10, 15, 20 minutes to noticeably lower the temperature. Depending on the size of the room, the temperature outside and inside, and the power of the split system.
- Correspondence of the power of the split system with external parameters. A low-power air conditioner naturally cannot significantly cool a spacious room when it is hot outside and the room is very warm. When choosing equipment, it is often overlooked that the load can be peak, and the air conditioner must be taken with a margin of “strength”.
- Room isolation. The air conditioner in the apartment will not cool well if there are “holes in the tightness” of the room: open windows, doors, a working ventilation system. An additional influx of heat from the outside or a forced outflow of cold air from the room are the reasons that lead to poor cooling.
- "Blocked" air inlet or outlet, another reason. Obstacles in the form of curtains, blinds, furniture interfere with normal air circulation and, as a result, cooling.
If there is enough power, the entrance and exit is free, the windows and doors are closed and enough time has passed, but it has not become cooler, then it is necessary to diagnose the equipment. Simply put, measure the air temperature at the inlet to the air conditioner and at the outlet.
The inlet temperature is measured at the air intake grilles. Put the thermometer on the body or hold it in your hand. The output is measured in the jet from the outside or by slightly pushing the thermometer inward through the blinds.
Attention! Do not push the thermometer deep into the case. It can get caught in the fan blades.
In a serviceable air conditioner, the temperature difference at the “input-output” is in the range of 7-15 degrees. If you just turned on the air conditioner for maximum cooling, and the difference is less than these values, then your split system does not cool well due to some internal reasons.
In addition, you can check the outlet temperature of the flow with the nameplate values. Usually, the equipment passport indicates the outlet cooling mode temperature, for example, 6-14 ° C for non-inverter systems. When turned on, inverters give the same parameters, and after reaching the set temperature in the room, they slightly raise the output value - up to 12-17 ° C degrees. If the temperature of the outlet stream exceeds the passport, then you should look for a problem inside the air conditioner.
The air conditioner blows warm air, what problems can be fixed by yourself
You can deal with some of the reasons for poor cooling yourself. The table summarizes the main ones, and gives recommendations for troubleshooting equipment failure.
| sign | Possible reason | How to fix |
| The air conditioner does not cool the room well. | The temperature is set to high in the settings. For fast cooling, it is recommended to choose the minimum. And then switch to a comfortable one. | Adjust the cooling mode. |
| The air conditioner turns on but does not cool. | Fan mode selected. And the air just circulates without cooling. | Select cooling mode. |
| The air conditioner blows heat (for models with heating mode) | Heating mode on by mistake. | Set the cooling mode. |
| Cooling is weak. May leak and/or freeze indoor unit conditioner. | (coarse and fine cleaning). Dust, wool, hair clog the filters and settle on the heat exchanger plates. Because of this, the heat removal from the evaporator worsens: the radiator does not release cold well into the air, which leads to poor cooling. If the indoor unit is very dirty, the evaporator tubes may freeze up. Dust can also clog the drain hose, causing condensate to remain in the sump and then drip from the indoor unit. |
Clean filters. To get them, open the cover of the block. How to do this is described in the instructions. Then take out the filters and rinse well under running water. cold water and put the clean ones back in place. Attention! Do not use hot water, the filters may be deformed.If you yourself are afraid to "climb" into the indoor unit of the air conditioner, call the master. |
| Poor cooling, compressor shuts off during outdoor unit. | The radiator of the outdoor unit is dirty. Dust, fluff from plants, plaque from the "exhaust" of vehicles have accumulated on the heat exchanger, the rotation of the fan may be difficult. All this impairs the heat exchange of the condenser with environment and reduces the cooling capacity of the air conditioner. In addition, the compressor may turn off due to overheating. | The outdoor unit needs to be cleaned. You can use a steam generator, pressure washer or mechanical means(brush, sponge). If the house is multi-storey, the services of an industrial climber may be required. |
| Blows warm air. The split system compressor located in the outdoor unit is silent or turns on for a short time (2-3 minutes) and turns off again. |
Low voltage in the network. Lack of voltage often leads to overheating of the rotor winding and shutdown of the motor by a thermal relay. |
Install a voltage monitoring relay. It can be placed separately or paired with a stabilizer. |
If the elimination of these problems did not improve the situation and cooling is still weak or absent, then the problem is in the components and parts of the climate equipment. In this case, a full diagnosis by a specialist and service repair is required.
The air conditioner in the apartment does not cool - reasons that require professional maintenance or repair
Symptoms of malfunctions are similar, but they occur due to wear or malfunction of parts, damage, internal contamination of components and mechanisms. Based on the experience of repairing air conditioners, the RemBytTech masters compiled a list of the main equipment breakdowns.
| sign | Possible reason | Repair or replacement | Price* (only work) |
| The air conditioner blows weakly and does not cool well. Water may drip from the indoor unit and the evaporator tubes may freeze. |
Clogged indoor unit filters(coarse and fine cleaning). Dust, wool, hair clog the filters and settle on the heat exchanger. The heat removal from the evaporator deteriorates, and the radiator does not transfer cold well to the air flow passing through it. In addition, severe contamination of the indoor unit may prevent the rotation of the fan and cause frosting of the evaporator tubes. When the drain hose is clogged, condensate remains in the sump and then flows out of the indoor unit. |
The filters are cleaned after removal. When the evaporator and fan are dirty, the entire indoor unit is disassembled to clean the components. |
from 1900 rub. |
| The air conditioner blows normally after winter, but does not cool well. | There is not enough freon in the air conditioner. Even in a sealed system, up to 7% of refrigerant per year can evaporate. Therefore, climate equipment requires annual maintenance (cleaning, refueling). | Freon is being recharged. | from 2300 rub. |
| There is airflow, but there is little or no cooling. At first, the compressor in the outdoor unit works without stopping, but the air conditioner, nevertheless, does not cool well. Then, the motor stops turning on, and the split system stops cooling. On models with an error indication, a low pressure message appears. |
Freon has leaked from the system. At first, with a small amount of leakage, the air conditioning compressor located in the outdoor unit is less and less turned off for rest, despite poor cooling. Then, as the refrigerant evaporates from the system, the equipment begins to blow warm air room temperature and the motor stops and does not turn on. Typically, leakage occurs due to flaring of the joints of the interblock pipes or the destruction of the installation seams. |
The technician is looking for a refrigerant leak. Then it seals the leak, evacuates the system (to remove moisture and air) and fills the system with freon. | from 3400 rub. |
| It blows normally, the compressor in the outdoor unit almost does not turn off, but the air conditioner does not cool at all or the cooling is weak. The air conditioner pipe up to the evaporator can also freeze up. |
Clogged capillary piping. Due to a clogged capillary tube, the pressure difference at the inlet and outlet of the capillary increases, so part of the freon boils and gives off cold even before the air conditioner evaporator. As a result, the cooling capacity of the split system drops, and the equipment tries to compensate for its lack by the constant operation of the compressor. When the pipeline is completely blocked, the refrigerant does not circulate, the compressor runs idle, the air remains warm. |
Partial blockage is removed by blowing with air under pressure. This operation is also called pushing the blockage. For removing strong blockage hydraulic cleaning and solvents are used. In especially difficult cases, when it is not possible to remove the blockage, the capillary tube is unsoldered and a new one is soldered. |
from 3900 rub. |
| Split system blows but does not cool well. The compressor in the outdoor unit occasionally turns off. | The outdoor unit of the air conditioner is dirty. Dust, fluff from plants, plaque from the "exhaust" of vehicles have accumulated on the heat exchanger. In addition, the fan becomes dirty, and its rotation speed decreases. All these factors worsen the normal heat removal from the condenser, it does not give off excess heat to the outdoor air. Because of this, the quality of cooling of the split system is reduced. The air conditioner tries to compensate for the lack of cooling by the constant operation of the motor in the external unit. | The master washes and cleans the radiator. IN high-rise buildings, with difficult access to the outdoor unit, you must additionally order the service of industrial mountaineering. | from 2200 rub. |
| The air conditioner blows hot air when the cooling mode is on (in models with heating). |
Faulty 4-way changeover valve. It is located in the outdoor unit and is responsible for changing the heating and cooling modes. In the event of a breakdown, the valve "jams" in heating mode. | The valve needs to be repaired or replaced. In some cases, if the heating mode is not needed, the valve is simply unsoldered, and the equipment always works for cooling. Usually this is done to reduce the cost of repairs or in the absence of spare parts (valve). |
from 3500 rub. |
| Blows air at room temperature. The compressor is silent or turns off immediately after starting the air conditioner. |
Compressor defective(in outdoor unit) . The main breakdowns are jamming, breakdown of the windings, inter-turn short circuit of the engine or open circuit. | The compressor needs to be replaced. In the case of a wedge, repair is sometimes possible (can be wedged). In some cases, it is more expedient to completely replace the external unit with a new one. |
from 4200 rub. |
| Faulty start and/or run capacitor(in the outdoor unit). The start capacitor is needed for the initial start of the compressor motor. Working - keeps the engine in working mode and increases efficiency. In case of loss of the nominal capacity of the capacitor, discharge, breakdown, the engine may not start or turn off shortly after starting. |
The defective capacitor needs to be replaced with a new one. | from 1300 rub. | |
| Compressor thermostat failure(in the outdoor unit), which is responsible for the thermal protection of the motor. Because of this, the compressor is not supplied with power, and it does not start. | The thermostat needs to be replaced with a new one. | from 1500 rub. | |
| Blows cold, but does not cool well. The split system turns on for a short time and quickly turns off when high temperature indoors and minimum temperature mode. cooling. Modern models give an error code. |
Faulty temperature sensor or thermistor. He "monitors" the temperature in the room and is located in the indoor unit. In the event of a failure, it can “read” underestimated indicators, due to which the cooling is turned off ahead of time. | It is necessary to replace defective sensors with new ones. | from 1400 rub. |
| Faulty evaporator or condenser temperature sensors. According to their indicators, the pressure in the system is regulated for different cooling modes. If any of the sensors erroneously signals that the required cooling parameters have already been reached, then the air conditioner turns off ahead of time, without having cooled the room to the required temperature. | |||
| It blows, but the cooling is weak. The compressor in the outdoor unit can work without stopping and turn off by a thermal switch due to overheating. | The outdoor unit fan is defective. Most often, the engine burns due to dust ingress. This leads to poor heat removal from the condenser and poor cooling capacity, which the air conditioner tries to compensate for by the constant operation of the compressor. This leads to overheating of the motor, and its shutdown by a thermal relay. | A complete replacement of the fan or only its motor is required (if fan parts are sold separately). | from 1700 rub. |
| The air conditioner blows warm air when turned on. | Lost communication between blocks. As a result, the external one does not work. Without freon circulation, the indoor unit turns into a ventilation device and “drives” air without cooling. Communication often disappears in outdated models. Modern ones immediately signal an error code when the connection fails and will not work. |
Restore power to the external unit (usually wiring, contact connections). | from 1500 rub. |
| Faulty control board in the indoor unit. The cause may be jammed, punctured or burnt elements that start the compressor or fan of the outdoor unit. For example, power relays, amplifying circuits. In addition, the microprocessor may fail. | The control module needs to be repaired or replaced. The relay can be cleaned if the contacts are stuck. Damaged elements are soldered and replaced with new ones. In case of severe damage to the unit, especially due to burnt microcircuits, failure of the microprocessor, a complete replacement of the control module is required. |
from 1800 rub. | |
| Faulty inverter module(in the outdoor unit). It is only present in inverter air conditioner and is responsible for powering the compressor. If the module fails, the compressor does not receive current. | The defective module must be replaced with a new one. | from 2300 rub. |
* The cost is indicated ONLY for the work of the master. Spare parts and additional services are calculated separately and included in the total bill.
In addition to the main faults, there are others. To determine exactly what kind of breakdown has occurred, an air conditioner diagnostics is carried out. Based on its results, the master determines the amount of repair and names the full cost of the service.
Have you found that the air conditioner turns on, but does not cool well or does not cool the air in the room at all? Tried to fix the problem, but the situation did not change? Contact us for professional help!
Call the RemBytTech service center:
The master will diagnose and repair the air conditioner at home. The day and time of the repair is up to you.
After repair, we provide a guarantee for parts and work performed. The warranty card is valid for up to 2 years (depending on the repaired malfunction).
