The present invention provides an air conditioner, including main body. The main body is arranged with air inlet and air outlet, vane, blower, heat exchanger, air purification unit and front panel. The air conditioner includes: a vane drive device, providing force to drive the vane; a high pressure power supply, for supplying high voltage to electric dust filter; a sensor, for detecting whether the front panel is opened or closed or not; a controller, being connected electrically to the vane drive unit and the high pressure power supply as well as the sensor, and the controller is configured to control the operation of the air conditioner, wherein when the front panel is opened during the operation of the air conditioner, the controller controls the operation of one or more components to break down the operation.