Air conditioner as well as control method and device thereof and computer readable storage medium

The invention discloses a control method of an air conditioner which is provided with a micro controller, wherein the micro controller is provided with a first inner core and a second inner core; andthe first inner core and the second inner core are provided with a shared register area. The control method for the air conditioner comprises the following steps: obtaining a fault symbol while the first inner core detects that the fault symbol exists in the shared register area, and writing the fault symbol which corresponds to a fault into the shared register area while the second inner detect that a first part in the air conditioner has a fault; analysing fault information which corresponds to the fault symbol; and controlling a second part in the air conditioner according to the fault information. The invention further discloses an air conditioner as well as a control device thereof and a computer readable storage medium. Through a reading-writing way in the shared register area, communication between the firs