SOFAR 250/255KTL-HV
User Manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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check whether the grid
voltage/frequency is within the
acceptable range. If no, contact
technical support. If yes, check the
AC circuit breaker and AC wiring
of the inverter.
If the grid voltage/frequency is
within the acceptable range and
AC wiring is correct, while the
alarm occurs repeatedly, contact
technical support to change the
grid over-voltage, under-voltage,
over frequency, under-frequency
protection points after obtaining
approval from the local electrical
grid operator.
ID04 GridUFP
The power grid
frequency is too
low
ID05 GFCIFault
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 the insulation
resistance between the PV array
and earth(ground) is too low, then
check the insulation conditions of
PV cable.
ID06 OVRT
OVRT faulty
ID07 LVRT
LVRT faulty
ID08 IslandFault
Islanding faulty
ID09 GridOVPInstant1 Grid instantaneous
voltage too high 1