1, the refrigeration system is short of cooling liquid, so the car air conditioning warm air comes from it, and the principle is different from that of domestic air conditioning heating. Automobile warm air circulation is to connect a pipeline in parallel in the small circulation pipeline of engine coolant, which is connected with a warm air water tank, and the blower blows the warm air water tank to generate warm air, which is how the air conditioning warm air comes from. The lack of coolant in the cooling system is the most common and easily solved fault phenomenon that causes the warm air not to be hot.
2. The heater tank is blocked. The structure of the warm air water tank is actually a miniature version of the radiator of the engine water tank. There are many small cooling pipes in it, which are as easy to block as the radiator of the water tank. After the inside of the warm air water tank is blocked, the coolant flows slowly, the flow rate becomes smaller, and the heat is insufficient, so the air conditioner warm air is naturally not hot.
Extended data:
Precautions for heating air:
1. First of all, you can't turn on the warm air in the car for a long time.
If you leave the warm air in the car on for a long time, you will have a feeling of poor breathing. Because the windows in the car are closed in winter, the closed space is bound to cause poor air circulation.
2, warm air temperature should not be too high.
During driving, if the warm air temperature is too high, the owner is prone to drowsiness, and an accident is very likely to occur. Driving on the highway, because of the long time, boredom and drowsiness, is more serious.
3, warm air can repeatedly break the window and fog.
In winter, due to the large temperature difference between inside and outside the car, the window is prone to fog. As many car owners know, if you press the window defogging button, the cold air will automatically blow on the windshield, and the fog in the window can be eliminated.
But the fog will appear again and again. To solve this problem, we can try to turn on the warm air to remove the fog. The operation process is to park the car on the side of the road, turn on hot air and heat up. When the fog inside the glass is completely dry, the temperature will drop, so that there will be no more fog during driving.
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