DETERMINATION METHOD AND DETERMINATION DEVICE

A determination method and a determination device are provided. A determination device is provided with a refrigerant circuit (3), an operation determination unit (161A), and a refrigerant determination unit (161B). A refrigerant circuit (3) connects a compressor (11), condensers (13, 21A, 21B, 21C, 21D, 21E), expansion mechanisms (14A, 14B, 14C, 14D, 14E), and evaporators (13, 21A, 21B, 21C, 21D, 21E) in a ring shape. The operation determination unit (161A) determines whether or not the refrigeration cycle operation can be normally performed during the refrigeration cycle operation corresponding to the amount of heat required by the condensers (13, 21A, 21B, 21C, 21D, 21E) or the evaporators (13, 21A, 21B, 21C, 21D, 21E). When it is determined that the refrigeration cycle operation cannot be normally performed, a refrigerant determination unit (161B) determines, on the basis of the determination result, whether or not the refrigerant in the refrigerant circuit (3) can be regenerated. As a result, provided is