| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability of an air conditioning device, while reducing standby power of the air conditioning device.SOLUTION: A power source wiring (L), a signal line (S), and a common line (N) are arranged between an outdoor unit (10) and an indoor unit (20). An indoor unit transmitting circuit (21) communicating with the signal line(S) and the common line (N) is arranged in the indoor unit (20). An ON/OFF switch (K2R) switching connection and no connection between the signal line (S) and the power source wiring (L) is arranged. A protecting circuits (D1, D2) blocking AC current to the indoor unit transmitting circuit (21) in the case the signal line (S) and the power source line (L) are connected, are arranged. An outdoor side control circuit (13) activated by being fed with power by the phase of AC current connected by the signal line (S) and the power source line (L) and the phase of the same AC current as the common line (N) and switched to the state in which the power is fed from the AC power source (40) not via the power source wiring (L) and the signal line (S) after the activation in the case the signal line (S) and the power source wiring (L) are connected, is arranged in the indoor unit (10). |
