A multi-type air conditioner comprising: an outdoor unit including a compressor, a four-way switching valve, an outdoor heat exchanger, outdoor refrigerant pipes connected therebetween, a refrigerant gas pipe extending from the four-way switching valve to an indoor side, and a refrigerant liquid pipe extending from the outdoor heat exchanger to the indoor side; a plurality of indoor units including indoor heat exchangers and indoor-side electronic expansion valves and connected in parallel between the refrigerant gas pipe and the refrigerant liquid pipe extending from the outdoor unit via indoor refrigerant pipes; a pressure sensor configured to detect refrigerant pressure on a low-pressure side in the outdoor unit; temperature sensors configured to detect the temperatures of the indoor heat exchangers of the indoor units; and characterized in that the multi-type air conditioner further comprises a control section configured to check the operation of the indoor-side electronic expansion valves based on changes in the refrigerant pressure on the low-pressure side and the temperatures of the indoor heat exchangers occurring as the degree of opening of the indoor-side electronic expansion valves is changed, wherein the control section is configured to calculate the saturation temperature of the refrigerant corresponding to the refrigerant pressure detected by the pressure sensor and to calculate the differences between the calculated saturation temperature and the temperatures of the indoor heat exchangers, and when the degree of opening of the indoor-side electronic expansion valves is changed to a fully closed state, the control section determines abnormality of the indoor-side electronic expansion valves when the differences have risen before the indoor-side electronic expansion valves are fully closed. an outdoor unit including a compressor, a four-way switching valve, an outdoor heat exchanger, outdoor refrigerant pipes connected therebetween, a refrigerant gas pipe extending from the four-way switching valve to an indoor side, and a refrigerant liquid pipe extending from the outdoor heat exchanger to the indoor side; a plurality of indoor units including indoor heat exchangers and indoor-side electronic expansion valves and connected in parallel between the refrigerant gas pipe and the refrigerant liquid pipe extending from the outdoor unit via indoor refrigerant pipes; a pressure sensor configured to detect refrigerant pressure on a low-pressure side in the outdoor unit; temperature sensors configured to detect the temperatures of the indoor heat exchangers of the indoor units; and characterized in that the multi-type air conditioner further comprises a control section configured to check the operation of the indoor-side electronic expansion valves based on changes in the refrigerant pressure on the low-pressure side and the temperatures of the indoor heat exchangers occurring as the degree of opening of the indoor-side electronic expansion valves is changed, wherein the control section is configured to calculate the saturation temperature of the refrigerant corresponding to the refrigerant pressure detected by the pressure sensor and to calculate the differences between the calculated saturation temperature and the temperatures of the indoor heat exchangers, and when the degree of opening of the indoor-side electronic expansion valves is changed to a fully closed state, the control section determines abnormality of the indoor-side electronic expansion valves when the differences have risen before the indoor-side electronic expansion valves are fully closed.