Self-cleaning method and device for air conditioner filter screen, air conditioner and storage medium

The invention relates to the technical field of intelligent household appliances, and discloses a self-cleaning method for an air conditioner filter screen. The air conditioner filter screen is connected with a heat exchanger of the air conditioner through a heat-conducting structure; the method comprises the steps that under the condition that the air conditioner filter screen has the cleaning requirement, a filter screen self-cleaning mode is started; controlling a heat exchanger connected with the air conditioner filter screen to operate as an evaporator until a frosting layer is formed on the surface of the air conditioner filter screen; and a heat exchanger connected with the air conditioner filter screen is controlled to operate as a condenser, so that the frosting layer is melted. The air conditioner filter screen is made of the heat conduction material, and the air conditioner filter screen is connected with the heat exchanger through the heat conduction structure; and the self-cleaning of the air con