A refrigeration cycle apparatus comprising: a refrigerant circuit in which a compressor , a heat-source-side heat exchanger , a first expansion device , a second expansion device , and a load-side heat exchanger are sequentially connected by refrigerant pipes and in which refrigerant is circulated; a controller configured to control the refrigerant circuit; a bypass pipe extending from a liquid pipe between the first expansion device and the second expansion device toward a suction side of the compressor ; a third expansion device provided at the bypass pipe , and configured to decompress the refrigerant that flows through the bypass pipe ; and a refrigerant cooler provided at the bypass pipe and downstream of the third expansion device , and configured to cause heat exchange to be performed between the refrigerant decompressed by the third expansion device and heat generated from the controller , characterized in that the refrigeration cycle apparatus further comprises: a control temperature detector configured to detect a temperature of the controller ; and an opening-degree detector configured to detect an opening degree of the third expansion device , wherein when the temperature detected by the control temperature detector is higher than or equal to a temperature threshold, and the opening degree of the third expansion device detected by the opening-degree detector is higher than or equal to an opening-degree threshold, the controller decreases an opening degree of the first expansion device . a refrigerant circuit in which a compressor , a heat-source-side heat exchanger , a first expansion device , a second expansion device , and a load-side heat exchanger are sequentially connected by refrigerant pipes and in which refrigerant is circulated; a controller configured to control the refrigerant circuit; a bypass pipe extending from a liquid pipe between the first expansion device and the second expansion device toward a suction side of the compressor ; a third expansion device provided at the bypass pipe , and configured to decompress the refrigerant that flows through the bypass pipe ; and a refrigerant cooler provided at the bypass pipe and downstream of the third expansion device , and configured to cause heat exchange to be performed between the refrigerant decompressed by the third expansion device and heat generated from the controller , characterized in that the refrigeration cycle apparatus further comprises: a control temperature detector configured to detect a temperature of the controller ; and an opening-degree detector configured to detect an opening degree of the third expansion device , wherein when the temperature detected by the control temperature detector is higher than or equal to a temperature threshold, and the opening degree of the third expansion device detected by the opening-degree detector is higher than or equal to an opening-degree threshold, the controller decreases an opening degree of the first expansion device . a control temperature detector configured to detect a temperature of the controller ; and an opening-degree detector configured to detect an opening degree of the third expansion device , wherein when the temperature detected by the control temperature detector is higher than or equal to a temperature threshold, and the opening degree of the third expansion device detected by the opening-degree detector is higher than or equal to an opening-degree threshold, the controller decreases an opening degree of the first expansion device . <EOS>