Energy diagnostic system.

The Energy Diagnostic System (EDS) automatically reviews the energy condition of a building and performs some simple diagnostics. The system contains a thermal model of the building that has been determined earlier in a learning period of approximately 90 days after the installation of the system. This model calculates the reference energy consumption. The energy condition is determined by comparing the measured energy consumption with this calculated energy consumption. Based on the results and with the additional knowledge of the condition of the heating installation, some simple diagnostics can be performed: whether the increased energy consumption is caused by the installation or due to situations in the building itself.