EN
81
Input voltage LED Status Description
Vin < Vstart
Power = Flashing
Alarm = OFF
The input voltage is not sufficient to enable connection to the grid.
Vin > Vstart
Power = Flashing
Alarm = ON
The input voltage is sufficient to enable connection to the grid: the inverter
waits for the grid voltage to be present to make the connection to the grid.
• Depending of the supply source used to complete the installation wizard steps, close the disconnect switch of missing voltage sources: In
case of missing AC source close the AC switch downstream of the inverter (and AC disconnect switch (09) for the -S2, -SX2, SY2 wiring
box versions); In case of missing DC source close the DC disconnect switches (15).
• When the input voltage is sufficient to allow the connection to the grid, the inverter will check the grid voltage, measure the isolation
resistance of the photovoltaic field with respect to ground and performs other auto-diagnostic checks. During the preliminary checks
on the parallel connection with the grid, the “Power” LED keeps flashing, the “Alarm” and “GFI” LEDs are OFF. The inverter will ONLY
connect to the grid if all parameters fall within the ranges foreseen by current regulations.
• If the outcome of the preliminary checks to grid synchronization are positive, the inverter connects and starts to export power to the grid.
The “Power” LED remains fixed on while the “Alarm” and “GFI” LEDs are OFF.
NOTE – D To address any problems that may occur during the initial stages of operation of the system and to ensure
the inverter remains fully functional, you are advised to check for any firmware updates in the dedicated section of web
user interface (“SERVICE TOOLS menu”), via Installer for Solar Inverters APP or in the download area of the website
www.fimer.com or at https://registration.solar.fimer.com (refer to ““Registration website” and “Admin Plus token”” paragraph).
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