SOFAR 7.5KTLM User manual
Copyright © Shenzhen SOFARSOLAR Co., Ltd
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.
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.
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.
The input current is
too high , and has
happen hardware
protection
Check whether the input current is higher
than the maximum input current of inverters,
then check the input wiring, if both are correct,
please contact technical support.