A method has been developed to effectively and concisely record maintenance performed on air conditioning systems. Here, to represent the nature of faults and to enable maintenance record to be selected, classifications are established for types and severity of loss, mode and mechanism, and information for predicting faults. Maintenance mode is classified as a combination of maintenance policy and maintenance measure. The basis for determining maintenance expenditure, which must also be recorded, is classified as well. Several examples of maintenance records using the above classifications are presented.
