Goodwe ETC Series User Manual page 51

User Manual V1.0-2023-04-30
No. Fault
16 DCIOutRange
17 BackupOutputFail
18 StsTurnToOffGridFault
19 DcRlyFault
20 GridFreqFault
Cause
DC injection is
high.
Loads connected
to the back-up
of the inverter
exceeds the range
specified by the
inverter.
STS fails to
transfer on-grid to
off-grid
DC realy
exception.
Utility grid
exception. The
actual grid
frequency exceeds
the requirement
of the local grid
standard.
47
Solutions
1. If the problem occurs occasionally,
the utility grid may be abnormal
temporarily. The inverter will recover
automatically after detecting that the
utility grid is normal.
2. If the problem occurs frequently,
contact the dealer or the after-sales
service.
Reduce the number of loads connected to
the back-up of the inverter. Make sure that
the power of the loads does not exceeds
the max output power of back-up.
Reduce the number of loads connected to
the back-up of the inverter.
Check whether there are abnormalities
such as short circuits.
Disconnect the AC output switch and DC
input switch, then connect them 5 minutes
later. Contact the dealer or the after-sales
service if the problem persists.
1. If the problem occurs occasionally,
the utility grid may be abnormal
temporarily. The inverter will recover
automatically after detecting that the
utility grid is normal.
2. If the problem occurs frequently, check
whether the grid frequency is within the
permissible range.
• Contact the local power company
if the grid frequency exceeds the
permissible range.
• Modify the overfrequency
protection threshold or disable the
overfrequency protection function
after obtaining the consent of the
local power company if the grid
frequency is within the permissible
range.
09 Maintenance