The invention discloses a method and
system for cleaning an air conditioner and the air conditioner. The method comprises the following steps that the operating state of the air conditioner before operation is stopped is detected; when the operating state of the air conditioner before operation is stopped is a refrigerating pattern, heating elements are on until the environment temperature in an
air channel of the air conditioner reaches a preset temperature, wherein the heating elements are arranged in an air outlet, an air inlet and / or the
air channel of the air conditioner; and according to the dry
state of the environment in the
air channel, the heating state of the heating elements is controlled. According to the method, the heating elements are started to heat the air channel, and thus the purpose of killing
bacteria in the air channel through the high temperature is achieved. In addition, the state of the heating elements is controlled according to the dry
state of the environment in the air channel, and the effects of thoroughly sterilizing and cleaning the interior of the air channel are achieved. Finally, the problems that by means of the automatic cleaning function of a traditional air conditioner, only part of
bacteria can be eliminated, and comprehensive and effective cleaning cannot be achieved are effectively solved.