AIR-CONDITIONING SYSTEM

摘要

An air-conditioning system, comprising a housing (1), a compressor, a heat-exchanger, an air-conditioning system control board, a fan motor (6), a fan wheel (7), and an air filter mesh (5); the fan motor (6) comprises a motor controller (62) and a motor body (61); a motor control board (621) is connected to the air-conditioning system control board (100) by means of 5 connection ports, and the air-conditioning system control board (100) outputs a preset signal to the fan motor (6) by means of one of the connection ports; a microprocessor, on the basis of said preset signal, calculates a preset air volume; the fan motor (6) is used as an element for detecting air volume, and when detecting that the air volume is lower than said preset air volume, the microprocessor determines that the air filter mesh (5) is blocked and outputs an alarm signal to the air-conditioning system control board (100) by means of another connection port.