Patent ID: 9518755
Filing Date: 2016-12-13
CPC Classification: F24F,F25B

Claim Text:
1. An air-conditioning apparatus, comprising: a plurality of indoor units, each of the indoor units comprising an indoor heat exchanger; an outdoor unit comprising an outdoor heat exchanger, a compressor and a control unit configured to determine whether stagnation of refrigerant in the indoor heat exchanger lowers heating capacity of the indoor unit performing a heating operation; and a refrigerant pipe configured to couple the outdoor heat exchanger and the compressor with each of the indoor units, wherein the outdoor unit further comprises a high-pressure sensor that is disposed at the refrigerant pipe coupling the compressor with the each of the indoor units, the high-pressure sensor configured to detect a pressure of refrigerant that flows from the compressor to the indoor heat exchanger, each of the indoor units further comprises a refrigerant temperature sensor that is disposed at the refrigerant pipe coupling the indoor heat exchanger with the outdoor heat exchanger, the refrigerant temperature sensor configured to detect an indoor unit side refrigerant temperature of the refrigerant that is flowed out from the indoor heat exchanger, and the control unit is configured to: