Sunways AT 2700, User Manual

Page: 75 / 142

75
Malfunction Description Remedies
101:U-DC max Your AT solar inverter is ap-
proved for a maximum open-
circuit voltage of the solar
generator of 680 V. All com-
ponents of the DC input are
sufficiently dimensioned with
a safety factor. If the threshold
is exceeded, the solar inverter
stops feeding. The maximum DC voltage
was exceeded.
➡
Check the dimensioning of
your PV generator.
Too many modules are con-
nected in series.
➡
Reduce the number of mo-
dules and carry out commis-
sioning again.
102:Insulation Before each connection, your
solar inverter checks the PV sys-
tem for a possible earth fault
or insulation faults. Should this
kind of error be detected, no
feeding takes place. The mode
of operation is conformant
with DIN VDE 0126-1-1. The solar inverter has disco-
vered an insulation fault in the
PV system during start-up.
➡
Check your PV system for
possible insulation faults
(pinched-off DC lines etc).
The measured insulation
resistance must be at least
680 kohms.
75
Malfunction Description Remedies
103:AFI>30mA Your solar inverter is equipped
with a universally sensitive AFI
according to DIN VDE 0126-
1-1. This monitoring unit has
detected a relative residual
current jump of >30 mA. A residual current jump has oc-
curred during operation of the
solar inverter.
➡
Check your PV system for
possible insulation faults.
104:AFI>0.3A Your solar inverter is equipped
with a universally sensitive AFI
according to DIN VDE 0126-
1-1. This monitoring unit has
detected an absolute residual
current of >300 mA. A residual current greater than
300 mA has occurred during
operation of the solar inverter.
➡
Check your PV system for
possible insulation faults.
201:Surgef. Your solar inverter continually
monitors the quality of the AC
grid. During high voltage peaks
on the phase feeding in, the
solar inverter stops feeding and
attempts a restart. The solar inverter has detected
a high voltage peak on the
phase feeding in.
➡
After malfunction elimina-
tion the solar inverter re-
starts automatically. Should
the error occur frequently,
please contact your power
supply company.
A monitoring phase and a di-
rectly earthed conductor were
exchanged when connecting
the AC side.