AIR CONDITIONER

摘要

In this air conditioner, at least one indoor unit (3A, 3B) is connected to an outdoor unit (2) via crossover gas piping (4) and crossover liquid piping (5), and a gas-side shutoff valve (36) and a liquid-side shutoff valve (35) are provided in the crossover gas piping (4) and the crossover liquid piping (5) in the vicinity of a gas-side operation valve (19) and a liquid-side operation valve (20) provided in a coolant circuit (22) on the outdoor unit (2) side. An outdoor control device (27) is equipped with: an emergency shutdown control function for closing the liquid-side shutoff valve (35) on the basis of an emergency shutoff signal, causing operation to continue as a cooling cycle and, when a low-pressure pressure reaches a set pressure, closing the gas-side shutoff valve (36) and stopping the operation of the air conditioner (1); and an output terminal (37) for outputting a shutoff signal to the gas-side shutoff valve (36) and the liquid-side shutoff valve (35).