The invention discloses a control method and device for an air conditioner universal controller and the air conditioner universal controller, and belongs to the field of air conditioner communication.The control method comprises the steps that firstly, the type of a to-be-controlled air conditioner is obtained, then different
processing is carried out correspondingly according to the type of a single
system or double systems of the to-be-controlled air conditioner to obtain pre-sent data packets, and finally, a host is controlled to sequentially send request frames to slaves according to thepre-sent data packets. According to the scheme, the to-be-sent data frames are processed according to the air conditioner type, so that the problems that communication stagnation is easily caused in the process of sending data frames of the data packets when the double-
system air conditioner is controlled, and
network data packets contain redundant data when the single-
system air conditioner is controlled are solved; different
processing is carried out on to-be-sent data of the single system and to-be-sent data of the double systems correspondingly, and therefore communication stagnation can be avoided when the double-system air conditioner is controlled; and meanwhile, communication network efficiency is improved when the single-system air conditioner is controlled, so that communicationtime is shortened.