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.
The cooling system is short of cooling liquid, and the principle of heating is different from that of domestic air conditioning. 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.
Extended data:
Other reasons why warm air is not hot:
1, warm water valve failure
Warm water valves are common in luxury brands, and are actually electrically controlled valves. The warm water valve is installed between the water inlet pipe of the warm water tank and the small circulating pipeline of the engine, and the opening of the valve is controlled by the air-conditioning computer, so as to control the flow rate of coolant entering the warm water tank and achieve the purpose of controlling the warm air temperature of the air conditioner more accurately.
2, thermostat failure
The common fault of the thermostat is that it can't be opened, but the reason why the warm air is not hot due to the thermostat fault is that the thermostat can't be closed, commonly known as the thermostat is always open. After the thermostat is normally open, the coolant will circulate from the idle speed of the engine.
In winter in the north, the water temperature will be low for a long time, and the air conditioning warm air is naturally not hot. It can also be clearly seen from the thermometer that the pointer is obviously lower than the normal scale. In addition, long-term low water temperature of the engine will lead to high fuel consumption and increased wear (the engine is not working at the optimal temperature), so it is necessary to carry out maintenance and inspection immediately when the water temperature is low for a long time.
People's Network-Why is it so cold? In winter, the air conditioner and warm air are not hot as hell.
Chery Automobile official website-Technical Quality