Driving in winter, especially in the north, it is necessary to turn on air conditioning and warm air, but some car owners will encounter the situation that the water temperature is normal, but there is no warm air, so why is there no warm air when the water temperature comes up? Let's find out.
1, the engine water temperature has come up, but it may not meet the standard of air conditioning warm air operation, so it will cause the phenomenon that the warm air is not hot.
It may be because the heating pipe is blocked. This can be judged by yourself. Open the engine compartment cover and touch the heater upper and lower water pipes with your hands. If the temperature difference between the upper and lower water pipes is large, it will be blocked. After blockage, the heated air will not get hot.
3. If the refrigerant circulation valve and the warm air flow valve fail, the temperature and flow rate of the refrigerant in the warm air box will not reach the working condition, and the air conditioner will have no warm air.
4. Under normal circumstances, the exhaust should be carried out after replacing the coolant. If there is no exhaust, there will be air resistance in the coolant system, which will also cause the phenomenon that the warm air is not hot.
Expanding knowledge Most of the energy sources of air-conditioning heaters in modern cars are provided by engine coolant. Once the coolant leaks or decreases, the temperature of the heater will decrease.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)