What is the reason why the warm air of automobile air conditioner is not hot?

The reason why the warm air of automobile air conditioner is not hot is that the warm air tank is blocked, the air conditioner filter element is blocked and the air conditioner motor is aging. Blockage of heating water tank: The low temperature of hot water inlet and outlet pipes of heating water tank is a symptom of poor circulation of air conditioning water tank. The radiator of the air-conditioning water tank is very thin. After long-term use, the scale and impurities in the cooling liquid will block the pipeline of the radiator of the air-conditioning water tank, resulting in poor circulation of the water tank and unable to provide enough heat to transport warm air to the cab, which belongs to the internal blockage of the air-conditioning water tank. The solution is to check the small warm air tank to see if there is any blockage. If yes, replace the small warm air tank. Air conditioning filter plug: the main function of air conditioning filter plug is to filter out impurities in the air entering the air conditioning system. If the air-conditioning filter is blocked and the air entering the air-conditioning system is insufficient, the air-conditioning fan cannot generate enough air volume to provide warm air for the vehicle. The solution is cleaning or replacing. Aging of air-conditioning motor: when the air-conditioning motor is aging and the working efficiency is reduced, there will be a situation of loud noise but small air volume, and the heat of the warm air box cannot be transferred to the cab in time and effectively, resulting in the situation that the air-conditioning warm air is not hot. In addition, the blockage of air conditioning pipes is also one of the reasons for the small air volume of warm air. The solution is to go to the 4S shop to replace new parts.