Rule-based FDD

Heating, ventilation and air conditioning systems, e.g., air handling units (AHUs), play a key role in modern building energy systems (BES) as they account for a high share of the energy usage, e.g., 30 % within the U.S. commercial building sector. Unfortunately, many faults occur during the operation of AHUs leading to higher energy usage and the need for expert personnel monitoring the according plants. The latter is a time-consuming task and is assisted by fault detection systems nowadays.