Check the temperature of the two inlet pipes of the warm air small water tank. If it is hot enough, there is nothing wrong with the heating control mechanism. If they are all cold or hot and cold, there is something wrong with the refrigeration system. The cooling system of the engine is blocked by air, which leads to the abnormal operation of the cooling circulation system of the automobile and the problem that the warm air is not hot. If the inlet pipe of the warm air small water tank is hot and the outlet pipe is cold, it means that the small water tank is blocked and needs to be replaced.
If the thermostat of a car is always on or opened too early, the cooling system will circulate ahead of schedule, and the temperature outside the car will be low, and the cold air outside will quickly cool the antifreeze, resulting in insufficient temperature rise of the water tank and insufficient warm air, so it is necessary to adjust or maintain the thermostat. (Photo/Text/Photo: Pacific Auto Network Chen Min 2)