| 摘要 |
A setting button (53) for setting an option for change in operation mode is provided in either of indoor control units (3) for respective refrigerant control systems (12, 13). In addition, an outdoor control unit (2) sets the system number of a refrigerant control system (12, 13) of an interior control unit (3). An indoor control unit (3) outputs an option holding signal, as well as a system signal for the system number. A system display button (6a) for displaying an option, as well as the refrigerant control systems (12, 13) is provided in a central controller (4). Moreover, provided in the central controller (4) are an option display lamp (HSM) for displaying an option and a system display lamp (HLM) for displaying the refrigeration control systems (12, 13). <IMAGE> |
