6 Troubleshooting
- 84 -
Fault Name
Operating
Panel
Display
Cause
Possible Solution
Power supply
unit fault
(to be
continued)
E 25.00
The power supply
unit is faulty.
Eliminate the fault, such as input phase loss
and overheat.
Check the terminal configuration. If any of
the following functions is selected, a fault is
reported when there is no feedback signal:
1: Operation enable
2: Incoming breaker feedback
3: Auxiliary breaker feedback
4: Leakage breaker feedback
If any of the following functions is selected, a
fault is reported when the terminal is active.
6: Drive unit operation forbidden
7: Drive unit coast-to-stop
8: Drive unit shutdown by setting
E 25.12
The grid voltage is
abnormal.
1: Check whether the three-phase power
supply is normal.
2: Check whether the input cables break.
3: Check whether input terminals are
connected properly.
4: Check the hardware voltage detection
circuit.
5: Adjust the three-phase voltage to the
allowable range.
6: Check whether the three-phase power
supply is normal.
7. Check the hardware voltage detection
circuit.
E 25.14
The IGBT is
overheating.
1: Lower the ambient temperature.
2: Clean the air duct.
3: Replace the fan.
4: Contact Inovance or the agent for technical
support.
