0: No fault
1: Inverter unit U phase protection (OUt1)
2: Inverter unit V phase protection (OUt2)
3: Inverter unit W phase protection (OUt3)
4: Overcurrent during acceleration (OC1)
5: Overcurrent during deceleration (OC2)
6: Overcurrent during constant speed (OC3)
7: Overvoltage during acceleration (OV1)
8: Overvoltage during deceleration (OV2)
9: Overvoltage during constant speed (OV3)
10: Bus undervoltage fault (UV)
11: Motor overload (OL1)
12: VFD overload (OL2)
13: Phase loss on input side (SPI)
14: Phase loss on output side (SPO)
15: Rectifier module overheat (OH1)
16: Inverter module overheat (OH2)