Control method and control device for air conditioner, air conditioner and storage medium

The invention relates to the technical field of intelligent household appliances, and discloses a control method for an air conditioner, which comprises the following steps: when the air conditioner is in a refrigeration working condition, obtaining the frosting condition of the surface of an indoor evaporator of the air conditioner; under the condition that frosting occurs, the current indoor coil pipe temperature is obtained; under the condition that the temperature of the indoor coil pipe is lower than a preset temperature threshold value, the air conditioner is controlled to stop; and under the condition that the indoor coil pipe temperature is higher than or equal to a preset temperature threshold value, the air conditioner is controlled to execute preset anti-freezing operation. The air conditioner is controlled to execute shutdown protection or preset anti-freezing operation according to the frosting condition and the temperature of the indoor coil pipe, the situation that related anti-freezing operati