| 摘要 |
An object of this invention is to suppress a rise in the temperature in the machine room due to the insufficient capacity of the indoor unit and to reduce the occurrence of defects in equipment in the machine room, even in the refrigerant quantity detection operation. A refrigerant circuit (10) and an operation control means (8, 8a) are provided. A refrigerant circuit is configured by the interconnection of a heat source unit (2), a plurality of utilization units (3a to 3c), and expansion mechanisms (V2, V9a to V9c). The heat source unit has a compressor (21) and a heat source side heat exchanger (22). The utilization units have utilization side heat exchangers (31a to 31c). The operation control means is capable of performing a refrigerant quantity judging operation to control constituent equipment such that a first state value becomes a first target control value. In addition, during the refrigerant quantity judging operation, the operation control means maintains a cooling capacity of a first utilization unit (3c) among the plurality of utilization units, which air conditions a predetermined space. |
