Car air conditioner does not heat: heater water tank is blocked: it is recommended to check whether the heater water tank is blocked. If yes, replace the heating box; Air conditioning filter plug: it is recommended to clean or replace it; Aging of air conditioner motor: It is recommended that 4S shop replace new parts. The reasons why automobile air conditioners do not heat are as follows:
1, heater box blocked. The low temperature of hot water inlet pipe and outlet pipe of warm air 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 coolant 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. This situation belongs to the internal blockage of the air conditioning water tank. However, if the heat sink outside the air-conditioning water tank is blocked, the airflow generated by the air-conditioning motor will be blocked by the heat sink of the air-conditioning water tank and cannot reach the cab through the air-conditioning outlet, resulting in poor air-conditioning heating. Suggestion: Check the heater water tank to see if it is blocked. If yes, replace the heater water tank.
2. 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. Suggestion: Just clean or replace it.
3. Aging of air-conditioning motor When the air-conditioning motor is aging and the working efficiency is reduced, there will be a situation where the noise is high but the generated air volume is small, and the heat of the warm air box cannot be delivered 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. Suggestion: Go to the 4S shop to replace new parts.