Sunways PT 30k, User Manual, Page: 59 / 88

Operation
PT 30k to PT 33k 57
Display message Description Cause and possible remedies
Solar generator fault
101:U-DC max. Your PT series Solar Inverter is approved
for a maximum open-circuit voltage of
the solar generator of 1000 V. All DC in-
put components are adequately dimensi-
oned with a safety margin. The Solar
Inverter stops feeding if the threshold is
exceeded. The maximum DC voltage was exceeded.

Check the dimensioning of your PV
generator.
Too many modules are connected in se-
ries.

Reduce the number of modules and
re-commission the system.
102:Insulation Before each connection, your Solar Inver-
ter checks the PV system for a possible
earth fault or insulation faults. If this kind
of error is detected, no feed in takes
place. The mode of operation is compli-
ant with DIN V VDE 0126-1-1. The Solar Inverter has detected an insula-
tion fault in the PV system during startup.

Check your PV system for possible in-
sulation faults (damaged DC cables
etc.).
The measured insulation resistance must
be at least 1000 k

.
103:AFI>30 mA
104:AFI>0.3 A Your Solar Inverter is equipped with an
AC/DC sensitive AFI according to DIN VDE
0126-1-1. The monitoring unit has detec-
ted a sudden relative residual current in-
crease of >30 mA or an absolute residual
current of >300 mA. A sudden residual current increase has oc-
curred during the unit operation.

Check your PV system for possible in-
sulation faults.
105:I-DC max. Your PT series Solar Inverter is approved
for a maximum DC current of 75 A. If the
threshold is exceeded, the Solar Inverter
limits the DC current by moving the ope-
rating point. The maximum solar generator current
permitted for the inverter was reached.

Check that the module interconnec-
tion generates an input voltage of
less than 420 VDC at full load and
rewire the modules according to the
min. DC input voltage of 420 VDC.
AC grid fault
201:UAC1<Min
202:UAC2<Min
203:UAC3<Min AC undervoltage
Your Solar Inverter continuously moni-
tors the voltage levels for feed phases L1,
L2 and L3. If the voltage falls below the
minimum permissible limit, the Solar In-
verter stops feeding and does not start up
again until the voltage value exceeds the
minimum limit value.

Ask your power supply company
(PSC) about grid stability and design.

Ensure that the cross-sections of the
feed lines are adequate, depending
on country-specific standards and
guidelines.
204:UAC1>Max
205:UAC2>Max
206:UAC3>Max AC overvoltage
Your Solar Inverter continuously moni-
tors the voltage levels for feed phases L1,
L2 and L3. If the maximum permissible li-
mit is exceeded, the Solar Inverter stops
feeding and does not start up again until
the voltage value drops below the maxi-
mum permissible limit.

Ask your power supply company
(PSC) about grid stability and design.

Ensure that the cross-sections of the
feed lines are adequate, depending
on country-specific standards and
guidelines.
p
h
o
t
o
v
o
l
t
a
i
k
f
o
r
u
m
.
c
o
m