SMA Sunny Boy 1700 Instrucciones De Instalacion Cortas página 9

GB
LEDs on the front panel
The LEDs on the lid display the operating state the Sunny
Boy is in. For details please refer to the Sunny Boy 1700
Technical Description. Description of the symbols used in the
following section:
Standby (night):
The input voltage is below 70 V and not yet
sufficient for normal operation.
Initialization:
The input voltage is not yet sufficient for
normal operation.
Stop:
The Sunny Boy is changing its operating
condition or is in a manually initiated con-
dition.
Failure:
internal or external failure, exact descrip-
tion depending on blink code
Blink codes for failures
Grid failure:
The Sunny Boy displays a grid failure if the grid frequency,
grid voltage or the change of the grid frequency are out of
the tolerable range.
Input voltage too high:
The Sunny Boy displays this blinking code if the PV input
voltage is above 300 V. Disconnect the grid and then the
PV-panels from the Sunny Boy immediately to prevent da-
mage!
Waiting, checking grid:
Starting conditions are being checked.
Operation:
feeding grid, MPP or constant voltage mo-
de
Isolation failure:
earth fault of the PV-panels or failure of sur-
ge voltage protection (thermally monitored
varistors)
Grid impedance too high:
The Sunny Boy has detected a failure based on non-per-
missible grid impedance values measured by the MSD.
Device failure:
The Sunny Boy is in a condition that makes it impossible to
return to normal operation. It has to be checked by a qua-
lified technician.