1, air conditioning filter element is damaged;
2. Lack of refrigerant;
3. The channel of warm air water tank is blocked, resulting in insufficient hot water entry;
4. If the air duct on the non-hot side is not open or blocked, check whether the control flap cable of cold and hot air in the heater box falls off, whether the heater impeller is damaged or whether the flap falls off.
Working principle of air conditioning warm air
Warm air is completed by the heat of engine coolant, that is, the coolant circulated by the engine enters the small water tank in the air conditioning bellows through the pipeline, and the air flows to the small water tank after the blower rotates, and the air becomes hot due to the heat, and then is blown out through the air conditioning tuyere.
If the warm air is half hot and half cold, first of all, it is important to consider whether there is a large temperature difference between the inlet and outlet pipes in front of the warm air box. If this is the case, it must be that the heater tank is blocked. At this time, it is necessary to remove and replace the heater tank to solve the problem.