| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that when a power supply function is imparted to a signal line to transit from a standby state to a normal operation, signal transmission/reception between an outdoor unit and an indoor unit induces a function of transmitting/receiving a signal with another indoor unit.SOLUTION: An indoor unit transmission/reception part 15A and an outdoor unit transmission/reception part 25A are connected by a signal line SA, and an indoor unit transmission/reception part 15B and an outdoor unit transmission/reception part 25B are connected by a signal line SB. A reset switch MR10A is connected between a power line L1 and the signal line SA, and a reset switch MR10B is connected between the power line L1 and the signal line SB. The first power line L1 is connected to a first terminal of a second switch MR30, and cathodes of two diodes 27A, 27B are connected to a second terminal of the second switch. The anodes of the first and second diodes 27A, 27B are connected respectively to the signal lines SA, SB. A common terminal of the second switch MR30 is connected to the first terminal or the second terminal thereof. Power is supplied to an outdoor power supply part 22 from the common terminal of the second switch MR30 and from a power line L2. |
