Micro computer controller for variable frequency air conditioner system

The utility model relates to a micro computer controller for a variable frequency air conditioner system, which is composed of an indoor machine control part, an outdoor machine control part, and a remote controller, wherein, the outdoor machine control part is added in a defrosting electromagnetic valve, and an indoor fan is driven by a position-sensorless DC brushless motor; a communication method utilized electric current loop optical coupling is adopted between the indoor machine control part and the outdoor machine control part to isolate strong current; the power of the outdoor machine part is controlled by the main control chip of the indoor machine part; the remote controller is provided with an indoor temperature sensor and a low voltage detection circuit. The air conditioner controller of the utility model has the advantages of efficient energy saving for the variable frequency air conditioner system and the comfort control of indoor environment.