Toshiba Carrier Corporation

Carrier Japan Corporation

Akira Iuchi

Ken Miura

Hirofumi Yamauchi

Naoki Imato

According to one embodiment, an air conditioner with two or more outdoor units and one or more indoor units, which are connected to a single refrigerant pipe in parallel, the air conditioner comprising a controller configured to determine, based on driving performance of the two or more outdoor units, a driving priority order of the two or more outdoor units. The controller switches the driving priority order of the two or more outdoor units between a descending order of the driving performance of the outdoor units and an ascending order of the driving performance of the outdoor units at certain intervals.

Air conditioner

According to one embodiment, an air conditioning apparatus has one or a plurality of indoor units, an outdoor unit, and a controller. The one or plurality of indoor units have an indoor heat exchanger, and an indoor expansion valve in which a degree of opening is variable. The outdoor unit has an outdoor heat exchanger, a four-way valve, a compressor, and a discharge pressure sensor configured to detect a pressure of a refrigerant discharged from the compressor. When a discharge pressure detected by the discharge pressure sensor is less than a predetermined pressure threshold value while a heating operation is performed, the controller sets a maximum time for continuing a defrosting operation started by a start condition of the defrosting operation being satisfied to be shorter than a maximum time for continuing the defrosting operation when the discharge pressure is equal to or higher than the pressure threshold value.

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Fuji, Japan

Akira Iuchi