Chapter 4 Operation
41
Warn/Protect/
Fault
Definition Possible
causes
Recommended
solutions
3
、
GridF.OutLim
Grid voltage
frequency is
abnormal, or grid
is not detected
1
、
Grid frequency
has abnormalities;
2
、
Power outage of
the grid;
3
、
Cable connection
between the inverter
and the grid is
disconnected
4
、
Inverter has
internal problems
1
、
Observe for 10
minutes and see
whether the alarm will
be eliminated
automatically;
2
、
Check whether the
grid frequency is within
the specified range;
3
、
Check whether the
cable connection to
the grid is
disconnected or has
abnormalities;
4
、
Contact after-sales
service personnel
4
、
PVVoltOver
PV voltage
exceeds the
specified value
1
、
PV over-voltage
2
、
Inverter has
internal problems
1
、
Observe for 30
minutes and see
whether the alarm will
be eliminated
automatically;
2
、
Check whether PV
voltage exceeds the
specified range;
3
、
Turn off the PV input
switch, wait for 5
minutes, turn on the
switch again;
4
、
Contact after-sale
service personnel
5
、
PVReverse
PV panel is
connected
reversely
1
、
PV positive pole
and negative pole
are connected
reversely;
2
、
Inverter has
internal problems
1
、
Check whether
positive pole and
negative pole are
connected reversely;
2
、
Contact after-sales
service personnel
