The structure of the warm air water tank is actually a miniature version of the radiator of the engine water tank, and 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.
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.
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Principles of purchasing antifreeze
Select the freezing point of antifreeze according to the ambient temperature conditions. The freezing point of antifreeze is one of the most important indexes of antifreeze, and it is also an important condition for antifreeze to prevent freezing. ?
The freezing point of antifreeze should be selected in the local environment with the lowest temperature of-10℃ ~ 15℃ in winter. If the local minimum temperature is -30℃, the freezing point of antifreeze should be below -45℃.
For imported cars, domestic imported production cars and high-grade cars should use permanent antifreeze (2-3 years), and ordinary cars can use direct antifreeze and softened water in summer.