A multi air conditioner and a driving method of it

The present invention improves the efficiency of the air conditioner system and multi relates to a driving method of the air conditioning system, it is an object of this invention to control the amount of refrigerant flowing in the operation stop state of the indoor unit when the man driving stationary part of the indoor unit of the whole indoor unit entire system to provide an operation method of the air conditioner system and air conditioner system capable. The present invention, in the operation method of the air conditioner system having a plurality of indoor units for this purpose, wherein it is determined whether some of the indoor unit of the plurality of indoor units and the operation enters into the stop state, the part of the indoor unit and the operation enters into the stop state if the driving heat of the stop state the indoor unit gicheuk measuring the temperature, and different from the operation stop state of refrigerant flowing into the operation stop state of the indoor unit by correcting the opening degree of the valve disposed in the indoor unit side heat exchanger gicheuk temperature is out of a reference range in the operation stop state of the indoor unit.