| 摘要 |
An indoor unit transmission/reception unit (15A) and an outdoor unit transmission/reception unit (25A) are connected by a first signal line (SA), and an indoor unit transmission/reception unit (15B) and an outdoor unit transmission/reception unit (25B) are connected by a second signal line (SB). A first reset switch (MR10A) is connected between a first power line (L1) and the first signal line (SA), and a second reset switch (MR10B) is connected between the first power line (L1) and the second signal line (SB). The first power line (L1) is connected to a first terminal of a second switch (MR30), and the 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 first and second 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 unit (22) from the common terminal of the second switch (MR30) and from a second power line (L2). |
