Research on fault diagnosis of distributed air-conditioning systems based on thermal and electrical faults

Through the analysis of the main equipment and working principles of the distributed air-conditioning system, for the electrical and thermal faults of the distributed air-conditioning system, appropriate fault diagnosis methods are selected. For electrical faults, the fault detection method based on signals is chosen for diagnosis. For thermal faults, a thermal fault diagnosis model of the distributed air-conditioning system is constructed based on the random forest method. The fault detection model is verified by heat exchanger fouling and end-air-path blockage. The results show that this fault detection model can effectively diagnose thermal faults.