CONTROLLER OF MULTIPLE-TYPE AIR CONDITIONER, MULTIPLE-TYPE AIR CONDITIONER, METHOD OF CONTROLLING MULTIPLE-TYPE AIR CONDITIONER, AND CONTROL PROGRAM FOR MULTIPLE-TYPE AIR CONDITIONER

摘要

PROBLEM TO BE SOLVED: To provide a controller of a multiple-type air conditioner capable of shortening the defrosting time in a plurality of heat exchangers each having a different volume, a multiple-type air conditioner, a method of controlling a multiple-type air conditioner, and a control program for a multiple-type air conditioner.SOLUTION: The controller of the multiple-type air conditioner comprises an outdoor machine comprising a plurality of outdoor heat exchangers 13, with at least one outdoor heat exchanger 13 having a volume different from those of other outdoor heat exchangers 13, and a plurality of indoor machines. The plurality of outdoor heat exchangers 13 each comprises an outdoor expansion valve 15 for adjusting the flow rate of a refrigerant to be supplied to each outdoor heat exchanger 13, and the flow rate of the refrigerant to be supplied to the individual outdoor heat exchangers 13 is adjusted according to the volumes of the plurality of outdoor heat exchangers 13 by controlling the corresponding outdoor expansion valves 15 during a defrosting operation.SELECTED DRAWING: Figure 2