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6.2 Errors
Error message
Explanation / Action
LED
display
Mains voltage too high
The grid voltage of one or more phases present at the inverter exceeds the permissible value according
to the national standards of the country selected. The inverter must not feed into the grid. Contact your
installer.
Red
Mains voltage too low
The grid voltage of one or more phases present at the inverter is lower than the permissible value accord-
ing to the national standards of the country selected. The inverter must not feed into the grid. Contact
your installer.
Red
Mains frequency too
high
The mains frequency at the inverter exceeds the maximum permissible value for the selected country. The
inverter must not feed into the grid. Contact your installer.
Red
Mains frequency too
low
The mains frequency at the inverter is less than the minimum permissible value for the selected country.
The inverter must not feed into the grid. Contact your installer.
Red
Residual current too
high
The residual current flowing from the positive or negative inputs to earth via the photovoltaic modules
exceeds the maximum permissible value. The inverter must not feed into the grid. Contact your installer.
Red
Mains DC current too
high
The DC current portion fed into the grid by the inverter exceeds the maximum permissible value for the
selected country. The inverter must not feed into the grid. Contact your installer.
Red
Isolation error
The isolation resistance between the positive or negative input and earth is less than the permissible value.
The inverter must not switch onto the grid. Contact your installer.
Red
Invalid country settings
One or more inverters have an invalid country code. Either no country was selected during commissioning
or differing countries are selected for multiple inverters in the same system. The inverter(s) do(es) not feed
into the grid.
Set a valid country code in the inverter.
Red
DC input voltage too
high
The input voltage at the inverter exceeds the permissible value. The inverter does not feed into the grid.
Switch off the DC switch and contact your installer.
Red
DC input voltage too
low
The input voltage at the inverter is less than the permissible value. The inverter cannot feed into the grid.
Contact your installer.
Red flashing
Internal error
Contact your installer.
Red
Internal warning
Contact your installer.
Red flashing
Internal information
Contact your installer.
Red-green
flashing
Derating temperature
The inverter cannot feed the grid at full power because the maximum permissible internal temperature
has been reached.
Contact your installer if this warning occurs frequently.
Red flashing
Derating 10 minutes
average value
The inverter cannot or may not feed the grid at full power because the average output voltage over a
period of 10 minutes lies outside the permissible tolerance range. Contact your installer if this warning
occurs frequently.
Red flashing
Derating external (e.g.
power supply company)
The inverter has received an external signal via the communications interface and is currently feeding the
grid at reduced power.
Red flashing
Derating temperature >
30 min
The inverter cannot feed the grid at full power because the maximum permissible internal temperature
has been reached. This state has now existed for more than 30 minutes. Contact your installer.
Red flashing
Derating 10 minutes
average value > 30 min
The inverter cannot or may not feed the grid at full power because the average output voltage over a
period of 10 minutes has been outside the permissible tolerance range for over 30 minutes. Contact your
installer if this warning occurs frequently.
Red flashing
Derating external (e.g.
power supply company)
> 30 min
The inverter has received an external signal via the communications interface and is currently feeding the
grid at reduced power. This state has now existed for more than 30 minutes.
Red flashing
Date/time not set
The time and/or date have not been correctly set at the inverter. The inverter operates without restrictions
but the measurements are not correctly stored in the internal data logger. Set the time and date at the
inverter (see the
StecaGrid Vision
manual).
Red-green
flashing
Option card error
The communications card inserted into the inverter has signalled an error. The communication to the
outside world is possibly interrupted but the inverter is otherwise operating without restrictions. Check
the communications and/or contact your installer.
Red-green
flashing
24h no energy injection
The inverter has fed no power into the grid for at least 24 hours.
Check if the DC switch is switched off or if snow is lying on the modules. If neither is the case then contact
your installer.
Red
Grid error (grid island-
ing detected)
The output voltage between two or more phases of the inverter lies outside the permissible tolerance
range. The inverter switches off for safety reasons.
Red
