METHOD FOR CONTROLLING OUTDOOR FAN MOTOR OF AIR CONDITIONER

摘要

A method for controlling an outdoor fan motor of an air conditioner comprises the following steps: determining a required rotation speed of a first outdoor fan motor (120) and that of a second outdoor fan motor (130) according to the operating condition of the air conditioner, and separately outputting, to the first outdoor fan motor (120) and the second outdoor fan motor (130), a control signal for the working frequency corresponding to the required rotation speed, the working efficiencies of the both being different at the same time point; detecting an air exhaust pressure of the air conditioner during refrigeration or an air absorbing pressure during heating; and comparing the measured air exhaust pressure or air absorbing pressure with a preset pressure, and controlling the rotation speed of the first outdoor fan motor (120) and that of the second outdoor fan motor (130) according to the comparison result. In the control method, the two motors are separately controlled at different frequencies, and accordingly, the noise in operation of the air conditioning unit is reduced, and the operation frequency range of the motor is widened, so that the air quantity can be more precisely adjusted, the pressure and the temperature of the unit are controlled within a reasonable range, and the operating effect of the unit is stabilized.