Operation and installation manual
Page 43 of 82
(PVI-10.0/12.5-OUTD-xx Rev:1.2)
NOTE
: Not only each inverter state is signalled through the relevant LED
that comes on or flashes, but the AURORA LCD also displays a message
that identifies the operation in progress or the detected fault/failure (see
following paragraphs).
G
Y
R
1) Night-time
mode
AURORA has switched off for the night; this happens when input
power is too low to power the inverter.
G
Y
R
2) AURORA initialisation and grid check
The machine is initialising: inverter input power is sufficient;
AURORA checks that the required conditions for start-up are true
(e.g.: input voltage, insulation leakage value, etc.) and starts grid check
routine.
G
Y
R
3) AURORA is powering the grid
Once all self-tests on electronic and safety parts are completed, the
machine starts grid connection sequence.
As already stated, in this stage AURORA automatically tracks and
analyses the maximum power point (MPPT) available from
photovoltaic field.
G
Y
R
4) Faulty insulation to ground
AURORA indicates that too low insulation leakage resistance was
detected.
The problem could be connected to an insulation fault in the
connection between photovoltaic field inputs and ground.
WARNING
: it is extremely dangerous to personally try to fix the
fault. Carefully follow the instructions below; contact a qualified
operator if you do not have the required training and experience to
work in safe conditions.
How to proceed after an insulation fault warning
When the red LED turns on, try first of all to reset the warning by
means of the multifunction ESC button, on the side of the LCD. If
AURORA correctly reconnects to the grid, failure cause was
temporary. It is recommended to have the system inspected by a
specialized technician if this type of malfunction occurs quite often.
If AURORA does not reconnect to the grid, it is necessary to set
AURORA in safety conditions and cut power both on the DC side and
the AC side, then contact the authorised repair centre to have the
system repaired.
