| 摘要 |
PROBLEM TO BE SOLVED: To improve reliability of a switch, while protecting a circuit of an air conditioning device.SOLUTION: A power line (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 (11) and an indoor unit transmitting circuit (21) communicating with each other based on the potential difference of the signal line (S) and the common line (N) are arranged. A first ON/OFF switch (K2R) switching the ON/OFf between the signal line (S) and the power line (L) is arranged. A second ON/OFF switch (K14R) switching the ON/OFF between the indoor unit transmitting circuit (11) and the transmitting signal line (S) is arranged. An indoor side control circuit (13) arranged in the indoor unit (10) supplied with power via the signal line (S) and the power line (L) and thereby activated in the case the first ON/OFF switch is switched on and switched while the power is supplied from an AC power source (40) not via the power line (L) and the signal line (S) after the activation, is arranged. |
