Dirty reminding method and device for condenser of air conditioner, air conditioner and storage medium

The invention provides an air conditioner condenser smudginess reminding method and device, an air conditioner and a storage medium, and the method comprises the steps that under the condition that it is determined that a fan of an outdoor unit is at a first air speed grade, the first air outlet amount of the outdoor unit at the first air speed grade is obtained according to a preset time interval; under the condition that the number of the obtained first air outlet volumes reaches the target number, a first average value of all the first air outlet volumes is calculated; and under the condition that the difference value of the standard air outlet volume under the first air speed grade and the first average value meets the first preset condition, a target reminding module in the air conditioner is controlled to be started so as to remind a user to clean a condenser of the outdoor unit. According to the method, the function of reminding the outdoor unit condenser from being dirty can be effectively achieved, a