# New fault diagnostic strategies for refrigerant charge fault in a VRF system using hybrid machine learning method

> Research article (Journal of Building Engineering, 2020) · cited 23× · AI/ML

**Wikidata**: [openalex:W3036143609](https://www.wikidata.org/wiki/openalex:W3036143609)  
**Source**: https://4ort.xyz/entity/new-fault-diagnostic-strategies-for-refrigerant-charge-fault-in-a-vrf-system-using-hybrid-machine-learning-method