Energy management and control systems (EMCSs) are widely used for automating HVAC system operation, for its remote control, and for detecting operating faults; however, manufacturers offer very few tools to assist the operator in diagnosing the defects that cause faulty process operation. This paper presents the results of research aimed at providing the service departments of French towns with tools that enable them to easily detect the most common faults occurring in the hydronic space heating systems used in school buildings. The problems encountered by the towns are described. The tool developed is then presented. Finally, the results of the application of the tool in two different towns are discussed.

Units: SI