Although modern models of air conditioners and split systems provide for a heating mode, most users still use equipment only in the cold in summer. 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 frost over the indoor unit of the air 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 cold water and reinstall the clean ones. 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, the compressor in the outdoor unit stops. | 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 the 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 the 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 at 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 drop 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. To remove heavy blockage, hydraulic cleaning and solvents are used. In particularly difficult cases, when it is impossible 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 multi-storey buildings, with difficult access to the outdoor unit, it is necessary to 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 briefly and turns off quickly when the room temperature is high and the minimum mode temperature is set. 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 present only in the 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? Have you tried to fix the problem, but the situation has not changed? 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).
If you are faced with the fact that the air conditioner blows warm air in the car, the first thing to do is to determine the cause of the malfunction.
Causes of malfunctioning air conditioning in cars:
Technological
The group of technological reasons for the malfunctioning of the air conditioner can be attributed to the use of low-quality materials in the production. This includes engineering errors as well as assembly flaws.
Operational
This group includes malfunctions caused by violation of the rules for the operation and maintenance of automotive systems, as well as the natural wear and tear of the air conditioning unit.
External
An air conditioner malfunction can be caused by negative environmental factors.
Of course, with a group of first causes, the owner of the car is unable to do anything. Anyway, marriage is marriage. However, everything is in your hands, and if you carefully monitor where and from whom you buy spare parts, giving preference to only trusted and reliable companies, then the operation of the air conditioner, as well as the entire machine as a whole, will be serviceable and durable.
So, here you can order a wide range of spare parts for Hyundai cars of original production and at affordable prices. Belts, oil filters, Hyundai air filter and many other useful accessories - all in one place! Wholesale and retail orders, regularly updated bonus programs and numerous promotions - place an order for high-quality and original products for your car with maximum benefit!
- When buying a car with an installed air conditioning system, do not forget to check its operation in the available modes.
- If your car has a large air intake and / or a large mesh grille, try to further protect the radiator by equipping it with a mesh. For this purpose, both metal and nylon are suitable.
- It is necessary to start the air conditioner in winter only after the car (interior) has completely warmed up. Remember, only if this rule is observed, the correct operation of the air conditioning system is possible!
How to diagnose the operation of an air conditioner
Turn on the air conditioner.
Feel his thick tube (return line). If it is cold and cools even more as the air conditioner runs, then the air conditioning system is working properly.
Now turn off the air conditioner for 5-10 minutes, then turn it on again. Make sure that the wave of cold has reappeared and is growing.
Do the same with a thin tube (pressure line). If it is hot and its temperature is higher than the temperature outside, then the air conditioner is theoretically working.
In order for all systems of your car to work properly, without causing problems and breakdowns, make sure that all spare parts are original production. Only original parts and equipment - the key to the proper operation of your car!
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, workshops for servicing auto-conditioners 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 is the same for all cooling devices), 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, there are many possible problems with the fan. This is the failure of the motor, and wiring problems, 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 electrical and mechanical damage, and repairs are usually difficult and expensive, the clutch is rarely repaired. 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 of electrical circuits - a breakdown is commonplace, 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 arrange an audit of 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 heading - 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 the dashboard and disassemble the stove on a specific car model, put on 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.
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. At the end of the article is a video review of self-cleaning the air 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 alertness 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.
No less important is the correct use of the air conditioner, as it 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 a 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.
The second common usage mistake is 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 get 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 the depressurization of the car's air conditioning system can lead to significant damage, especially in the case of high humidity. 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:
Air conditioning devices are installed in order to create comfortable conditions in the room. Their main task is to cool the air. The heating function was considered secondary for a long time. But today, leading manufacturers have changed their approach to this issue. It turned out that the heating mode can be very useful when cold weather sets in, before turning on the central heating. But sometimes there are situations when the system starts to work incorrectly. Why is the air conditioner not blowing warm air? The reason may be an incorrect operating mode or a breakdown of one of the elements of the cooling structure.
Air heating
In order to find out why the air conditioner does not work properly, you should understand how it heats the air masses. After all, initially, the cooling mode was considered the main function. It turns out that the design of individual mobile systems includes heating ceramic elements. In this case, their operation is similar to that of a conventional heater. The disadvantage of such devices is the high consumption of electrical energy.
Modern models use a different principle of operation when heating air. The refrigerant inside the structure changes the direction of circulation. The condenser and evaporative element change their roles. The air conditioner starts to cool the outside air masses. At the same time, warm air enters the room.
Operation of the cooling device at low temperatures, possible consequences
If the air conditioner does not blow warm air, you should find out if it is capable of operating in this mode. Not all designs can heat the air in the room with the onset of winter frosts. Standard cooling systems operate in heating mode only up to a certain negative temperature. Usually this value should not exceed -5 °C.
When using such devices in conditions of lower temperatures, the likelihood of problems increases significantly:
- the oil in the compressor becomes more viscous;
- the cooling substance changes its properties;
- dry start of the compressor can lead to its breakdown;
- work in extreme mode leads to rapid wear of parts and failure of the entire system.
An ice crust sometimes appears on the surface of the heat exchanger with the occurrence of frost. She melts periodically. Water flows into the tray. Ice forms in it. This may damage the fan. In addition, ice deforms the walls of the heat exchanger, leading to depressurization and leakage of the working substance.
Since heat enters the room from the external environment, when the temperature drops, the working conditions become more difficult. The air conditioner needs more energy to heat the air. When certain limits are reached, it can simply turn off and stop working.
Usually, the technical characteristics of the device indicate the temperature range in which its optimal functioning is possible. These parameters should be taken into account and do not use the technique in extreme mode.
Causes of incorrect operation of the system in heat transfer mode, ways to solve the problem
The following reasons for the poor performance of the cooling device in the heat transfer mode may occur:
- ice plugs appeared in the connecting tubes. They impede the movement of the working substance. It is not possible to defrost during the winter period. You can not heat the main line. To solve the problem, switch modes of operation. This changes the direction of movement of the coolant. The external module heats up;
- the air conditioner does not have enough freon. This situation can occur in the event of a leak and leakage of a gaseous substance. Technicians are called in to fix the problem. After finding problem areas, he closes them and fills the system to the desired level;
- dirt appears on the surface of internal parts. It is necessary to periodically remove the decorative cover of the device and clean the main elements and filters;
- certain parts of the structure may break. Usually in this case, a fault code appears on the control panel. To restore the operation of the cooling device, a service wizard is called.
Sometimes immediately after turning on the device, it turns out that it does not work in heating mode. How to make the air conditioner blow heat? You don't have to panic right away. A similar mode of operation is associated with a change in the direction of movement of the coolant. This requires a certain amount of time. Also, if there is a negative temperature outside, the compressor must gain momentum. You have to be patient and wait.
The use of inverter designs
As mentioned above, classical air conditioning devices are not sufficiently adapted to operate in heating mode at low negative temperatures. They reduce efficiency, increase heat loss. The risk of compressor failure increases.
Inverter models can be used more efficiently for space heating even in fairly severe frosts. There is a way to increase the efficiency of work. The flow of external air masses mixes with the air in the room. In heating mode, a smaller temperature difference has to be compensated.
To improve the operation of air conditioners in winter, winter sets of equipment can be used. They consist of the following elements:
- a device that heats the drain system and external connecting pipes;
- Heating elements heating the fan and compressor;
- a device for automatically adjusting the engine speed when changing temperature parameters.
Installing a winter kit helps prevent damage to the outdoor unit when it is turned on in border conditions and prevents the formation of ice in the drain pipe.
Is it worth using an air conditioner to heat the room?
The use of a cooling structure for space heating has a number of advantages:
- enough moisture remains in the air;
- no carbon dioxide is released;
- heat output is greater than the amount of consumed electrical energy;
- microclimatic conditions in the room improve.
But along with the advantages, there are certain negative points:
- the service life of the air conditioner is significantly reduced;
- the oil thickens faster, its characteristics deteriorate;
- The efficiency of the device becomes less than the nominal value;
- increases the risk of failure of the cooling device.
The heat transfer of air conditioning equipment is quite high and economically justified. Modern models are able to work at low negative temperatures. But they are only an addition to the main heating system.
Loading...