A refrigeration cycle apparatus including a main refrigerant circuit, through which a refrigerant circulates through a compressor, a heat-source-side heat exchanger (3A, 3B), a first flow rate control device (4A, 4B, 4C), and a use-side heat exchanger (5A, 5B, 5C), the refrigeration cycle apparatus comprising: a first gas-liquid separator; and a foreign-substance recovery container that recovers a foreign substance contained in the refrigerant, wherein a foreign-substance recovery refrigerant circuit that connects the first gas-liquid separator with the foreign-substance recovery container through a first passage opening and closing device is arranged between a suction side of the compressor and the use-side heat exchanger (5A, 5B, 5C), in parallel with the main refrigerant circuit, an accumulator is connected between the suction side of the compressor of the main refrigerant circuit and the use-side heat exchanger (5A, 5B, 5C), the first gas-liquid separator is connected such that an entrance of the first gas-liquid separator is communicated with an exit of the use-side heat exchanger (5A, 5B, 5C), an exit of a gas phase side of the first gas-liquid separator is communicated with an entrance of the accumulator, and an exit of a liquid phase side of the first gas-liquid separator is communicated with the first passage opening and closing device, and during a foreign-substance recovery operation that uses the foreign-substance recovery refrigerant circuit, the first gas-liquid separator is adapted to cause the refrigerant to flow toward the foreign-substance recovery container via an exit of the liquid phase side and the refrigerant to flow toward the accumulator via an exit of the gas phase side, wherein a low-pressure-side pipe of a high-low pressure heat exchanger, a second gas-liquid separator, and a second passage opening and closing device are connected in that order between the first passage opening and closing device and the foreign-substance recovery container. a first gas-liquid separator; and a foreign-substance recovery container that recovers a foreign substance contained in the refrigerant, wherein a foreign-substance recovery refrigerant circuit that connects the first gas-liquid separator with the foreign-substance recovery container through a first passage opening and closing device is arranged between a suction side of the compressor and the use-side heat exchanger (5A, 5B, 5C), in parallel with the main refrigerant circuit, an accumulator is connected between the suction side of the compressor of the main refrigerant circuit and the use-side heat exchanger (5A, 5B, 5C), the first gas-liquid separator is connected such that an entrance of the first gas-liquid separator is communicated with an exit of the use-side heat exchanger (5A, 5B, 5C), an exit of a gas phase side of the first gas-liquid separator is communicated with an entrance of the accumulator, and an exit of a liquid phase side of the first gas-liquid separator is communicated with the first passage opening and closing device, and during a foreign-substance recovery operation that uses the foreign-substance recovery refrigerant circuit, the first gas-liquid separator is adapted to cause the refrigerant to flow toward the foreign-substance recovery container via an exit of the liquid phase side and the refrigerant to flow toward the accumulator via an exit of the gas phase side, wherein a low-pressure-side pipe of a high-low pressure heat exchanger, a second gas-liquid separator, and a second passage opening and closing device are connected in that order between the first passage opening and closing device and the foreign-substance recovery container.