Why doesn’t the van have a heater?

The air-conditioning and heating principles of vans and other family cars are basically the same. The reasons why there is no heating are as follows: 1. The hot water does not reach the heating water tank. These include blocked heating pipes and malfunctioning heating valves. This kind of fault can be simply touched by hand in the engine compartment in front of the heating valve and the two heating pipes entering the cab. If one is hot and the other is cold, then there is a problem with the moisture in the heating air or the heating pipe system. 2. Hot air is not sent out of the air outlet. These include the air conditioner filter being clogged, the air conditioner heater door being stuck, the control cable detaching or the control motor failing, and the air supply volume of the blower being too small.