Patent ID: 8838416

Claim:
An air conditioning system diagnosis apparatus, comprising: message input means for retrieving a message flowing in a general-purpose network, in an air conditioning system configured by connecting a plurality of air conditioners, each of which incorporates a refrigerating cycle, through said general-purpose network; message analyzing means for analyzing the content of said message retrieved by said message input means; refrigerating cycle analyzing means for analyzing the state of said refrigerating cycle on the basis of message information, which is the content of said message analyzed by said message analyzing means, to create refrigerating cycle state information, which is the result of the analysis; waveform input means for retrieving waveform data from said general-purpose network; waveform analyzing means for analyzing to determine whether said waveform data retrieved by said waveform input means is abnormal or not to create waveform information, which is the result of the analysis; storage means for storing said message information, said refrigerating cycle state information, and said waveform information; trigger output means that receives said message information from said message analyzing means and outputs a trigger to said waveform input means when said message information meets a waveform analysis condition; and waveform analysis condition creating means for creating said waveform analysis condition according to said refrigerating cycle state information, wherein when receiving said trigger, said waveform input means starts to retrieve said waveform data from said general-purpose network, said waveform analysis condition creating means notifies said waveform analysis condition to said trigger output means, said refrigerating cycle analyzing means extracts a time span having a high frequency abnormality occurrence in said refrigerating cycle, and includes the time span in said refrigerating cycle state information, and said waveform analysis condition creating means creates said waveform analysis condition that said message information is obtained according to said message retrieved in said time span by said message analyzing means.