| 摘要 |
PROBLEM TO BE SOLVED: To acquire an air conditioner which can separate refrigerant circuits of a plurality of indoor units in which power failure occurs from an entire refrigerant circuit in a short time.SOLUTION: An air conditioner includes an outdoor unit; a first indoor unit which has a first refrigerant circuit breaker, a second indoor unit which does not have the refrigerant circuit breaker, and a distribution machine for distributing a refrigerant flowing in/out of the second indoor unit, and these are connected by a transmission line and the same refrigerant piping. The outdoor unit connected to a first power supply and the transmission line includes a transmission line power supply circuit capable of supplying power to the first indoor unit and the distribution machine, the distribution machine connected to a second power supply includes the second refrigerant circuit breaker on a main pipe side and a first power failure detection circuit. When power failure is detected in the first power failure detection circuit, all in the second indoor unit is separated from the refrigerant piping by the first refrigerant circuit breaker. The first indoor unit connected to a third power supply includes a second power failure detection circuit. When power failure is detected in the second power failure detection circuit, the first indoor unit is separated from the refrigerant piping by the second refrigerant circuit breaker.SELECTED DRAWING: Figure 1 |
