0: No fault   
4: Overcurrent during acceleration (OC1) 
5: Overcurrent during deceleration (OC2) 
6: Overcurrent during constant speed running 
(OC3) 
7: Overvoltage during acceleration (OV1) 
8: Overvoltage during deceleration (OV2) 
9:  Overvoltage  during  constant  speed  running 
(OV3) 
10: Bus undervoltage (UV)   
11: Motor overload (OL1) 
12: VFD overload (OL2) 
15: Rectifier module overheat (OH1) 
16: Inverter module overheat (OH2) 
17: External fault(EF) 
18: RS485 communication fault (CE) 
21: EEPROM operation fault (EEP) 
22: PID feedback offline fault (PIDE) 
24: Running time reached (END) 
25: Electronic overload fault (OL3)   
36: Electronic underload fault (LL)