48
Installation and Operating Instructions
V03
34
Vac Fault
The grid voltage is outside the permitted
range.
fault
35
No Utility Grid
Available
The utility cannot be detected, which may
be caused by no utility, grid disconnected,
AC cables damaged, fuse broken or
stand-alone grid.
36
Residual current
fault
The residual current exceeds the
permitted upper limit.
37
PV Overvoltage
The voltage of the strings exceeds the
permitted upper limit.
38
ISO Fault
The PV array’s insulation resistance to
ground is below the permitted value, or
the electrical insulation inside the
inverter has failed.
40
Over Temp.
The internal temperature exceeds the
permitted value.
41
Vac differs for
M-S
A different value of grid voltage has
been detected by the master and slave
MCU.
42
Fac differs for
M-S
A different value of grid frequency has
been detected by the master and slave
MCU.
43
Residual current
differs for M-S
A different value of residual current has
been detected by the master and slave
MCU.
44
DC Inj. differs
for M-S
A different value of DC feed-in has been
detected by the master and slave MCU.
45
Fac,Vac differs
for M-S
A different value of grid frequency and
voltage has been detected by the master
and slave MCU.
47
Consistent Fault
A different value has been detected by
the master and slave MCU.
