Ducted air conditioner and sterilization control method

The invention relates to the technical field of air conditioners, and provides a duct type air conditioner and a sterilization control method.The duct type air conditioner comprises a machine shell, an air quality sensor and a cross-flow fan; the air quality sensor is arranged on the machine shell and used for detecting indoor air quality data. The cross-flow fan is arranged in the machine shell and comprises a first end cover, a plurality of blades and a control assembly, and the blades are annularly arranged on the first side of the first end cover; the control assembly is arranged in the first end cover, electrically connected with the air quality sensor and the blades and used for controlling the number of the electrified blades for sterilization according to the indoor air quality data under the condition that the cross-flow fan operates. Blades of the cross-flow fan can be used for electrifying and sterilizing, sterilizing agents do not need to be sprayed, and therefore the purposes of no pollution and