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000592AG
7 - Operation
L
ED behaviour
The LEDs on the front panel can behave in different ways depending on
the inverter's operating state.
All possible LED activation combinations are shown in the following
table. In particular, each LED could behave in one of the following ways:
= LED on
= LED flashing (slow)
= LED flashing (fast)
= LED off
= Any one of the conditions described above
LED status
Operating state
green:
yellow:
red:
Firmware programming
The inverter firmware is being programmed
green:
yellow:
red:
Night mode (inverter automatically switches off)
The inverter is in night time switch-off mode (input voltage less than 70% of the set start-up
voltage).
green:
yellow:
red:
Inverter initialisation
This is a transitional state due to the verification of the operating conditions. During this stage
the inverter checks that the conditions for connecting to the grid are met.
green:
yellow:
red:
The inverter is connected and feeds power into the grid
Normal operation. During this stage, the inverter automatically tracks and analyses the
photovoltaic generator's maximum power point (MPP).
green:
yellow:
red:
Disconnection from the grid
Indicates no grid voltage. This condition does not allow the inverter to connect to the grid
(the inverter display shows the message "Missing Grid").
green:
yellow:
red:
Indication of Warning (W message codes) or Error E warning codes)
Indicates that the inverter control system has detected a warning (W) or error (E). The display
shows a message indicating the type of problem found (see Alarm messages).
green:
yellow:
red:
• Ventilation anomaly
Indicates an anomaly in the operation of the internal ventilation system that could limit output
power at high ambient temperatures.
• Failed association of internal inverter components (after replacement)
Indicates that the installed wiring box (only if replacing the inverter) was already associated
with another inverter and that it cannot be associated with the new inverter.
• Overvoltage surge arresters triggered (where fitted)
Indicates that any class II overvoltage surge arresters installed on the AC or DC side have
been triggered
• String protection fuses triggered (where fitted)
Indicates that one or more input string protection fuses that may be installed have been
triggered
• Autotest (for Italian grid standards only)
The inverter is performing an Autotest
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