Sofar 1.1KTL2-G3 - Page 71

SOFAR 1~4KTL2-G3 User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
- 65 -
to change the grid over-voltage,
under-voltage, over frequency,
under-frequency protection points after
obtaining approval from the local
electrical grid operator.
ID05
PVUVP
The input
voltage is too
low
Check whether too few PV modules are
series connected in a PV string, thus the
voltage (Vmp) of the PV string is lower
than the minimum operating voltage of
inverter. If yes, adjust the number of
series connected PV modules to
increase the voltage of the PV string to
fit the input voltage range of inverter.
inverter automatically returns to
normal operating status after correct
adjustments.
ID06
Vlvrtlow
LVRT function is
faulty
Check whether the grid voltage
fluctuates greatly.
ID07
Vovrthigh
OVRT function is
faulty
ID09
PVOVP
The input
voltage is too
high
Check whether too many PV modules
are series connected in a PV string, thus
the voltage (Voc) of the PV string is
higher than the maximum input
voltage of inverter. If yes, adjust the
number of series connected PV
modules to decrease the voltage of the
PV string to fit the input voltage range
of inverter. inverter automatically
returns to normal operating status after
correct adjustments.
ID10
Ipv
Unbalance
Input current is
not balanced
Check the input mode (parallel mode/
independent mode) setting of inverter
according to Section 6.3 (C) 6.Input
Mode of this user manual, If it’s
incorrect, change it according to
Section 6.3 (A) 10.Set Input mode of
this manual.
ID11
Pv Config Set
Wrong
Incorrect input
mode
ID12
GFCI Fault
GFCI Fault
If the fault occurs occasionally, the
possible cause is that the external
circuits are abnormal occasionally.
inverter automatically returns to
normal operating status after the fault
is rectified. If the fault occurs frequently
and lasts a long time, check whether