| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply device capable of suppressing pressure rise of a refrigerant circuit in starting an operation.SOLUTION: The heat pump type hot water supply device including the refrigerant circuit 1A constituted by sequentially connecting a compressor 2, a refrigerant-water heat exchanger 3, an electric expansion valve 5 and an evaporator 6, and a hot water storage tank 4 for storing hot water heated by the refrigerant-water heat exchanger 3, is controlled, so that starting control is performed to keep a predetermined opening of the electric expansion valve 5 for a prescribed time from start of a heating operation, and to transition to ordinary control to control the opening of the electric expansion valve 5 on the basis of a discharge temperature of the compressor 2 after the lapse of the prescribed time. |
