# An efficient VRF system fault diagnosis strategy for refrigerant charge amount based on PCA and dual neural network model

> Research article (Applied Thermal Engineering, 2017) · cited 57× · AI/ML

**Wikidata**: [openalex:W2760193045](https://www.wikidata.org/wiki/openalex:W2760193045)  
**Source**: https://4ort.xyz/entity/an-efficient-vrf-system-fault-diagnosis-strategy-for-refrigerant-charge-amount-based-on-pca-and-dual-neural-network-mode