Abstract: This article studies and analyzes the reasons for the low energy efficiency and inability to meet customers' personalized intelligent health function needs of a certain category of wall mounted small multi unit air conditioning products. In response to the adverse effects of low energy efficiency products and wall mounted multi unit air conditioning products without personalized intelligent health functions on enterprise sales, targeted analysis of the reasons and special measures are carried out to solve them. Optimization solutions for improving cooling capacity, increasing energy efficiency ratio, and personalized intelligent control of small multi unit air conditioners are proposed. After the completion and implementation of the solutions, good technical and economic benefits have been achieved.

Key words: Multi connected air conditioning, Energy efficiency optimization, Personalized intelligent control optimization, R32