Maintenance and Troubleshooting
3. Restart inverter and ensure whether the
fault is existing.
1. If it occurs occasionally, it is a short-term
abnormality of the power grid. The inverter
will resume normal operation after detect-
ing that the power grid is normal, and no
processing is required.
2. If it occurs frequently but can be auto-
matically recovered, you need to contact
the local power operator. After obtaining
permission, contact the custermer service
center to modify the inverter grid protec-
tion parameter settings.
3. If it occurs frequently but cannot be re-
covered for a long time, please contact for
repair.
The grid sliding average voltage exceeds
the allowable range, check the grid voltage
and sliding average voltage protection set-
tings.
Check whether the mains live wire and
neutral wire are reversed.
1. If it occurs frequently and accompanied
by an insulation resistance alarm, please
check according to the abnormal insula-
tion resistance alarm guidence;
2. If it occurs frequently, accompanied by
other alarms, and the inverter has been
unable to connect to the grid for power
generation, it can be judged that the in-
verter is faulty and contact customer ser-
vice for further check.
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