| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning system capable of highly accurately suppressing time related to restarting the air conditioning system during power return while suppressing cost increase.SOLUTION: An air conditioning system comprises: an expansion valve; an outdoor control unit; and a storage unit. A degree of opening of the expansion valve is adjusted. The outdoor control unit regularly transmits an operating state notification signal containing information related to the degree of opening of the expansion valve during operation. The operating state notification signal transmitted from the outdoor control unit is stored in the storage unit. The outdoor control unit executes starting processing when power is returned if power outage occurs during operation. The outdoor control unit acquires operation history information including the latest degree of opening of the expansion valve stored in the storage unit and calculates a valve degree-of-opening variation and an estimated degree of opening of the expansion valve on the basis of power outage duration time. The outdoor control unit executes reduction initialization processing for setting the degree of opening of the expansion valve to a minimum degree of opening on the basis of the estimated degree of opening of the expansion valve when the power is returned from long-term power outage.SELECTED DRAWING: Figure 6 |
