| 摘要 |
An outdoor unit 100 includes a bypass circuit 120 that makes a part of refrigerant that is discharged from a compressor 3 be bypassed to a connecting part 19 at the time of defrosting operation. A control device 14 of the outdoor unit 100 performs control of opening an electromagnetic valve 10 in the bypass circuit 120 based on an water temperature TW (c, in) in an water inlet and an water temperature TW (a, out) in an water outlet of an water heat exchanger 2 at the time of the defrosting operation. Further, a control device 14 controls a valve travel of the valve of the third expansion valve 8 in the bypass circuit 120 based on a refrigerant temperature TR (d, in) in a refrigerant inlet and a refrigerant temperature TR (b, out) in a refrigerant outlet of the water heat exchanger 2 in a case of the electromagnetic valve 10 being in an open state at the time of the defrosting operation. |
