A semi-labelled dataset for fault detection in air handling units from a large-scale office

Fault detection and diagnosis (FDD) in AHUs within HVAC systems ensure optimal performance, energy efficiency, and occupant comfort by quickly identifying and diagnosing faults. Combining deep learning with FDD has demonstrated high generalization ability in this field. To develop deep learning models, this research constructed a dataset sourced from real data collected from a large-scale office in South Korea. The raw HVAC data were extracted from a building management system (BMS) at 1 hour interval, spanning from July to October 2023. The dataset was partially labeled by annotation experts, categorizing the data into four types: normal, fan fault, sensor fault, and valve fault. The main contributions of this dataset to the field are twofold. First, it represents a unique dataset sourced from the real operational data of a large-scale office, which is currently non-existent in this domain. Second, the dataset's expert labeling adds significant value by ensuring accurate fault classification. Therefore, we hope this dataset will encourage the development of robust FDD techniques that are more suitable for real-world applications.