Refrigeration cycle apparatus

A refrigeration cycle apparatus in which a compressor, a heat-source-side heat exchanger, a pressure-reducing device and a use-side heat exchanger are connected by pipes to allow refrigerant to be circulated as a refrigeration cycle, the refrigeration cycle apparatus comprising

• a controller configured to control an operation of each of the compressor, the heat-source-side heat exchanger, the pressure-reducing device and the use-side heat exchanger,
• wherein with a degree of superheat at one of the use-side heat exchanger and the heat-source-side heat exchanger controlled to be kept constant, the controller sets an operation mode to a specific operation mode for determining whether abnormality occurs based on states of the compressor, the heat-source-side heat exchanger, the pressure-reducing device and the use-side heat exchanger in a case where an operating state of one of a plurality of element devices to be controlled by the controller is changed from a first state to a second state, the element devices being included in the compressor, the heat-source-side heat exchanger, the pressure-reducing device and the use-side heat exchanger.