Control method and control device of air conditioner and air conditioner

The invention provides a control method and device of an air conditioner and the air conditioner, and the control method comprises the steps that after the air conditioner is started for heating operation, the temperature of an outer coil of an outdoor unit is obtained; whether the air conditioner is in a first running state or not is judged according to the temperature of the outer coil pipe; wherein the first operation state comprises a non-frosting state or an endangered frosting state; and if yes, the rotating speed of an inner fan of the indoor unit and auxiliary electric heating of the indoor unit are controlled and adjusted according to the temperature of an inner coil pipe of the indoor unit. The technical problems that due to the fact that the design of heating and defrosting of the air conditioner is unreasonable, the operation time before defrosting is short, the number of defrosting times is large, and the use experience of a user is reduced are solved. 本发明提供了一种空调器的控制方法、控制装置和空调器，所述控制方法包括：在所述空调器开机制