METHOD FOR DIFFERENTIATING COOLING AND HEATING SWITCH RATIO ACCORDING TO CHANGE IN OUTDOOR TEMPERATURE FOR CONTROLLING SIMULTANEOUS MULTI-AIR CONDITIONER

摘要

PURPOSE: A method for controlling a simultaneous multi-air conditioner is provided to efficiently execute cooling or heating leading operation by differentiating cooling and heating switch ratio according to a change in an outdoor temperature. CONSTITUTION: A cooling indoor unit capacity ratio is compared with a heating indoor unit capacity ratio to execute cooling leading operation or heating leading operation. If capacity of indoor units is changed in the middle of cooling leading operation or heating leading operation, a cooling indoor unit capacity ratio to a heating indoor unit capacity ratio according to cooling and heating load is compared with a cooling indoor unit capacity ratio to a heating indoor unit capacity ratio according to an outdoor temperature. If the cooling indoor unit capacity ratio to the heating indoor unit capacity ratio according to the outdoor temperature is smaller than the cooling indoor unit capacity ratio to the heating indoor unit capacity ratio according to the cooling and heating load, cooling leading operation is switched into heating leading operation, and heating leading operation is switched into cooling leading operation.