The new Santana warm air is not too hot, and the water tank pressure is high.

There are two reasons for the shortage of vehicle heating system, one is the engine cooling system, and the other is the reason for the poor operation of heating control mechanism. When maintaining, first determine what the reason is, and then carry out corresponding maintenance. The method of discrimination is simple. Look at the temperature of the two inlet pipes of the warm air small water tank. If both pipes are hot enough, there is something wrong with the air flow control mechanism. On the contrary, if both pipes are cold, or one is hot and the other is cold, it is a problem with the cooling system. Air volume control mechanism problem: 1. Warm air from the car is blown into the cab by a blower. If the air volume is insufficient or the distribution of cold and hot air is uneven, the heat of the warm air tank cannot be dissipated, and the temperature of the warm air will not rise. At this point, first check whether the filter element is dirty or blocked, clean it, and replace it in time if necessary. 2. Check the operation of each gear of the blower to ensure that each gear has sufficient speed. If the knob is set to the warm air position, the air volume is large enough and the wind direction is normal, and cold air is blown out, check whether the cable of the cold and hot air control damper in the warm air box is disconnected.