Check the operation of the gears of the blower, and the gears must reach sufficient speed. If the knob is set to the warm air position, the air volume is large enough and the wind direction is normal, and the cold air is blown out, check whether the cable of the hot and cold air control flap in the warm air box falls off, whether the warm air impeller is damaged, whether the flap falls off, etc. After troubleshooting, the warm air will get hot.
Extended data:
Matters needing attention in turning on air conditioning in the car in winter
1. Under the long-term internal circulation mode of warm air conditioning, the air inside the car is not fresh, especially the space inside the car is not large, so in winter, the air conditioning inside the car must pay attention to regular window ventilation.
2. When the car turns on the warm air, it's best to open the window half, so that the air has a certain circulation, and start the convection mode, which can not only prevent the car from drying, but also improve the air quality inside the car.
3. When driving, don't blow the air outlet of the heater at people, which is easy to dry the skin. At the same time, if the bacteria in the air conditioning duct can reach people directly, they will be inhaled into the body and affect health.