Jianghuai Ruifeng S3 is a small SUV, and the antifreeze can't be discharged because of the heater cylinder. In the vehicle cooling system, antifreeze not only cools the engine, but also provides warm air for the vehicle. The warm air tank is a part of the antifreeze circulation system, which is responsible for heating the antifreeze, and then blowing hot air into the car through the blower to raise the temperature inside the car.
If the air in the warm air box is not completely exhausted, air resistance will be formed in the process of antifreeze circulation, resulting in abnormal antifreeze circulation. Air resistance will hinder the flow of antifreeze in the cooling system, thus affecting its heat dissipation effect. At the same time, because the density of gas is less than that of liquid, gas will float, while antifreeze will sink, forming convection phenomenon, which reduces the heat dissipation effect of warm air water tank.