Air duct type air conditioner and control method and control device thereof

The invention provides an air duct type air conditioner and a control method and a control device thereof. The air duct type air conditioner comprises a shell, an air supply fan, an air guide device, an electric auxiliary heating device and a heat exchanger, wherein the air supply fan, the air guide device, the electric auxiliary heating device and the heat exchanger are sequentially arranged in the shell; and the air guide device is used for changing the directions of wind blown by the air supply fan toward the electric auxiliary heating device and the heat exchanger. The control method of the air duct type air conditioner comprises the following steps of detecting a running mode of the air duct type air conditioner; and controlling a swing angle of the air guide device according to the running mode, and thus regulating the directions of the wind blown by the air supply fan toward the electric auxiliary heating device and the heat exchanger. According to the technical scheme of the invention, wind bearing un