24 -en
installation and configuRation manual
foR auRoRa photoVoltaic inVeRteRs
problem
possible causes
checks/possible solutions
the inverter does not establish
parallel with the grid.
Display message: E 025 Riso Low.
Green LED: OFF
Yellow LED: OFF
Red LED: ON
Insulation resistance to the
photovoltaic fi eld <1Mohm.
•
Check the inverter’s DC side
connections (ref. par. 5 of
this guide) and repeat the
commissioning procedure.
•
Check the adequacy and status
of the devices used externally
for protection against transitory
over voltage. Remove them and
retry. If necessary, replace them.
•
Disconnect the DC line and the
AC line. Measure the voltage
between the positive pole (and
the negative pole) for each of
the generator’s strings. If the
voltage is near zero, one of the
poles is (accidentally) connected
to earth. Check the connections
between the panels.
•
If the problem is with only
one inverter input, reverse the
strings for the input channels
and retry. If the problem moves
with the strings, check for
dispersions in the string (cables,
connectors). If the problem
moves with the input channel,
it could be a fault in the inverter.
•
If this error is frequently
repeated, consult the user
manual for further information.
the inverter does not establish pa-
rallel with the grid.
Display message: E018.
Green LED: OFF
Yellow LED: OFF
Red LED: ON
The inverter detects excessive
dispersion current to earth.
•
Carry out the same checks as in
the previous point.
Summary of Contents for Aurora PVI-10.0-TL-OUTD
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Page 64: ...Photovoltaic Inverters APPENDIX B Cable wiring diagram for RS485 line...
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