Patent ID: 7726583

Claim:
An air conditioner comprising: an indoor unit; and; an outdoor unit connected to the indoor unit via a plurality of power-supply use interconnection lines and a signal use interconnection line, the power-supply use interconnection lines including a first interconnection line, a second interconnection line and a third interconnection line, the indoor unit including first and second indoor side terminals as indoor side power-receiving terminals to which the first and second interconnection lines, respectively, are connected at their one end, a third indoor side terminal to which the third interconnection line is connected at its one end, a fourth indoor side terminal to which the signal use interconnection line is connected at its one end, a switch part with one end connected to the second indoor side terminal and another end connected to the third indoor side terminal, and a control section configured to control the switch part so as to turn off the switch part in a standby state in which the outdoor unit is kept out of operation, the outdoor unit including first and second outdoor side terminals as outdoor side power-receiving terminals to which the first and second interconnection lines, respectively, are connected at their other end, a third outdoor side terminal to which the third interconnection line is connected at its other end, and a fourth outdoor side terminal to which the signal use interconnection line is connected at its other end, and electric power being supplied to the indoor unit via the first indoor side terminal and the second indoor side terminal while electric power is supplied to the outdoor unit via the first outdoor side terminal and the third outdoor side terminal.