TROUBLE DIAGNOSTIC SYSTEM

PURPOSE:To realize an expert system which can takes a diagnosis similar to that by an expert engineer by providing a primary diagnosing function which utilizes the information of a central monitor system and a secondary diagnosing function which compares a measured value with a set value. CONSTITUTION:A trouble diagnostic menu is displayed at an input part 2 first. Information is obtained first from a building managing system 8 according to input data. A primary diagnosis is taken by using the obtained data and set value data on respective equipments, a secondary diagnostic flow and necessary measurement items are selected according to trouble and written in a file, and the primary diagnostic result is outputted from an output part 6. When the cause of the trouble is specified here, the operation ends, but when not, a secondary diagnosis is started. A secondary diagnostic flow and necessary measurement items corresponding to the trouble are transferred, the set value data on the respective equipments and comparison set values for the diagnosis are selected to take the secondary diagnosis according to the necessary data, and the output of the result and the displaying of a countermeasure are performed. Consequently, the expert system which easily takes the primary diagnosis and also performs the secondary diagnosis close to that by the expert engineer.