Air Conditioning System, Refrigerant Amount Estimation Method For Air Conditioning System, Air Conditioner, And Refrigerant Amount Estimation Method For Air Conditioner

Abstract: This air-conditioning system has: an air conditioner, which has refrigerant circuit formed by connecting at least one indoor unit to an outdoor unit by means of refrigerant piping, with a prescribed amount of refrigerant filling the refrigerant circuit; and a server, which is communicably connected with the air conditioner. The air conditioner has a first communication unit that detects a state quantity associated with control of the air conditioner, acquires a detected detection value, and transmits the acquired detection value to the server. The server has: a second communication unit that receives the detection value from the air conditioner; an estimation unit that, when a state quantity related to the amount of refrigerant filling the refrigerant circuit is set as a first characteristic amount, uses a detection value of the first characteristic amount to estimate a remaining refrigerant amount of the refrigerant remaining in the refrigerant circuit; and an discrimination unit that discriminates whether the detection value of the first characteristic amount is a detection value that should be used to estimate the remaining refrigerant amount. Consequently, an estimation accuracy for the remaining refrigerant amount can be increased even in a situation in which a characteristic amount used to estimate the remaining refrigerant amount is influenced by another defect.

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