The air conditioner does not cool in the car: causes of failure
Failure, when the air conditioner in the car blows, but does not cool, occurs for completely different reasons. But before we get acquainted with them, let’s understand the principle of operation of this device.
The air conditioner lowers the temperature of the air with the help of a special coolant – freon. The principle of work consists in the alternate evaporation and condensation of freon, which becomes the coolant, taking the heat from the air.
The air conditioner is designed with an evaporator, a compressor and a condenser. Liquid circulates through the lines, getting into these nodes and alternately changing the aggregate state from liquid to gaseous.
The breakdown of the device can lead to a situation when the air conditioner blows badly in the car, or the air flow is there, but it is warm. Now let’s move directly to the question of why the air conditioner in the car does not work.
Breach of air conditioner tightness
As already mentioned, the air conditioner provides for a number of nodes: the condenser, compressor and evaporator, as well as the lines that connect them, these are:
glands;
tubes;
clamps;
gaskets and many others.
Mechanical failure of one of the parts of the lines leads to the fact that the coolant begins to leak from the system. As a consequence, cold air does not blow from the air conditioner in the car. To prevent this from happening, turn on the unit regularly, even in winter time. This will avoid leaks in gaskets and pipes, which lose their performance without operation. You should not switch on conditioner for a long time – maximum for 5-10 minutes once a month.
Contamination of air-conditioning system
One more reason, why conditioner in a car does not cool down, is a banal presence of dirt in a system. It contributes to the fact that corrosion begins to appear on the metal elements of the device. Because of the presence of rust nodes and parts quickly deplete their service life, the situation when the air conditioner in the car is working badly, it becomes a matter of time.
Air conditioning devices in modern vehicles provide for self-diagnosis. When the lines or condenser of the air conditioner fail, the system heats up, which also leads to an increase in pressure levels. The unit shuts down on its own when it gets too hot or does not turn on at all. Here you have learned the main reason why the air conditioner in the car does not work.
To solve this problem is very simple: you need to regularly disassemble the device and clean it from dirt.
Mechanical faults
Also, the reason why the air conditioner does not cool in the car can be a mechanical failure. They may appear from the banal use of nodes of the air conditioner of its resource.
It is necessary to take into consideration that this device is rather fragile. If an air conditioner does not cool in a car, try to recollect if you have not collided with other objects during driving. A bent tube or deformed spigot could have caused the air conditioner in the car not cooling. This, in turn, causes the coolant to leak inside the system, the unit to shut down or lose its effectiveness.
Electronics failure
Another reason why the air conditioner in the car does not cool can be a burnt electronics. A small failure in the onboard network, voltage spike or oxidized contacts can lead to the fact that the high-pressure sensor or fan contacts will fail. It should be noted that these elements of the device are small in size. During operation, they are in a corrosive environment. This also puts them out of operation and leads to the fact that the air conditioner in the car does not cool.
Insufficient Freon Volume
This refrigerant not only acts as a cooling agent, but also as a lubricant for the parts. When the air conditioner in the car does not cool the air, the reason may lie in the insufficient volume of the liquid. This problem appears only if you do not monitor the car air conditioning system for a long time.
Why auto air conditioner doesn’t cool if you have climate control
If you want to know why the air conditioning in the car does not cool, it will be useful to know what climate control is.
Many modern cars don’t just use an air conditioning system, but a climate system that combines warm and cold air flows for maximum driver and passenger comfort. Thus, everyone present in the car can set the optimum blowing temperature for themselves.
Modern climate control can consist of such components:
- air quality sensor outside the car;
- device for autocirculation of cabin air;
- A filter that cleans the air in the cabin, it may contain activated carbon cartridges or ampoules with a liquid that gives the air a pleasant odor;
- car windows that do not change their temperature;
- An electronic unit to control the climate in the cabin of the car and much more.