Self-cleaning method and device for air conditioner, air conditioner and computer readable storage medium

The invention relates to the technical field of equipment cleaning, and discloses a self-cleaning method for an air conditioner. The heat exchanger is arranged in the shell; the water separating device is arranged in the shell and used for separating water in the air to the surface of the heat exchanger; the method comprises the steps that in response to a self-cleaning mode starting instruction, environment working condition information is obtained; and the air conditioner is controlled to operate in a self-cleaning mode, and operation of the water separating device is controlled according to the environment working condition information. And under the action of the water separating device, more water molecules are adsorbed to the surface of the heat exchanger, so that the frosting amount of the surface of the heat exchanger can be increased, and the self-cleaning effect of the air conditioner can be improved. The invention further discloses a self-cleaning device for the air conditioner, the air conditioner