This is normal phenomenon, in the working state of automatic air conditioning, according to the customer air targets set by the automatic control mode and wind speed.
When air conditioning start moment, if the target temperature and the actual temperature difference is bigger, inside the car airconditioning system will automatically select one of the largest wind speed, in order to achieve the purpose of rapid cooling, this is the wind blower will produce obvious.
This is the voice of the high speed blower air conditioning system, is a normal phenomenon of vehicles.
You can make the following adjustment:
1, adjust temperature setting switch/knobs change target temperature, reduction of the car and the actual temperature difference;
2, adjust the wind speed setting switch/knobs, reduce the wind speed of the fan, and at the same time automatic control mode to manual mode.