It is also possible that the water pump impeller of the vehicle is damaged or lost, which leads to the decrease of water in the water tank and the warm air is not hot, so the water pump impeller needs to be replaced.
It is also possible that the filter screen of the air conditioner is blocked, and there is something wrong with the parts of the control mechanism of the warm air, which makes the air volume blown into the car by the blower insufficient or the distribution of cold and hot air unreasonable, resulting in the phenomenon that the warm air is not hot.
In some high-end cars, there will also be a warm air water valve to cut off the coolant circulation of the warm air tank when the warm air is not used, so as to reduce unnecessary heat loss. If the heater water valve is damaged, the coolant may not enter the heater box, resulting in the heater not being hot.
After the owner found that there was a problem with the heating and air conditioning of the car, it was difficult to maintain it because all the parts of the car air conditioning were inside, so it was best to go to a 4S shop or a repair shop and let professional maintenance personnel solve the problem.
(Photo/Text/Photo: Pacific Auto Network Shi Lili)