Power One AURORA Manual Del Usuario página 22

INSTALLATION AND CONFIGURATION MANUAL
FOR AURORA PHOTOVOLTAIC INVERTERS
Problem
The inverter does not establish parallel
with the grid.
Display message: W003 Grid Fail
Green LED: FLASHING
Yellow LED: ON
Red LED: OFF
The inverter does not establish parallel
with the grid.
Display message: E013 Wrong Mode.
Green LED: FLASHING
Yellow LED: ON
Red LED: OFF
The inverter does not establish parallel
with the grid.
Display message: E 025 Riso Low.
Green LED: OFF
Yellow LED: OFF
Red LED: ON
The inverter does not establish parallel
with the grid.
Display message: E018.
Green LED: OFF
Yellow LED: OFF
Red LED: ON
Possible causes
The grid voltage exceeds the maximum
operating value (264V L-N)
Faulty confi guration of the input channels:
the switch for selecting the channel
mode is set on channels in parallel, but
the inputs on the inverter have not been
short-circuited (independent channels).
Insulation resistance to the photovoltaic
fi eld <1Mohm.
The inverter detects excessive dispersion
current to earth.
20 -EN
Checks/Possible solutions
•
Reduce the power of the photovoltaic
generator (by disconnecting one or more
strings or creating shading on the photovoltaic
generator). If the phenomenon disappears,
but you still note an increase in the grid
voltage, the problem is to be found in high
line impedance. Refer to the user manual for
further information.
• Check the status of selection switch for
the input channel operating mode and for
jumpers between the input channels (ref. par.
6 of this guide).
• 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.
Carry out the same checks as in the previous
•
point.