Control method and control device of air conditioner and air conditioner

The invention discloses a control method and a control device of an air conditioner and the air conditioner, relates to the field of air conditioners, and solves the problems that in the prior art, a plurality of fans are turned off in a short time, and the load shedding of a compressor is not timely, so that a unit has low-voltage protection and even is shut down by mistake. The control method comprises the following steps that the number of draught fans to be turned off is obtained; when the shutdown signals of at least two fans are received within a preset duration, determining a shutdown time sequence of the to-be-shut-down fan; and based on the determined shutdown time sequence, controlling the to-be-shut-down fan to be shut down. According to the control method of the air conditioner, the multiple to-be-shut-down fans are shut down successively based on the determined shutdown time sequence, low-voltage protection and even mistaken shutdown of the unit caused by untimely load shedding of the compressor