Troubleshooting
SB6000U-13:SE2506
SMA America
8-3
Error Messages
In case of an fault, the SB6000U generates an error code according to the operating
mode and the detected fault.
Error Type
Error Code
Description
Disturbance
Vac-Bfr
Vac-Srr
The AC grid voltage is exceeding the available range. (“Bfr“
or “Srr“ is an internal message and is not important for the
user.) Vac can also result from a disconnected grid or a dis-
connected AC cable. The Sunny Boy assumes that the public
grid is down and disconnects from the grid in order to avoid
islanding.
Check the grid voltage and the grid cable connection in the
Sunny Boy enclosure. If the grid voltage is out of range due to
your local grid conditions contact the utility company and
ask, if it is possible to modify the utility conditions. If the grid
voltage is within the tolerable range and you still observe the
failure message “Vac-Bfr“ or “Vac-Srr“ contact SMA.
Disturbance
Fac-Bfr
Fac-Srr
The AC grid frequency is exceeding the permissable range.
(“Bfr“ or “Srr“ is an internal message and is not important to
the user.) The Sunny Boy assumes that the public grid is down
and disconnects from the grid in order to avoid islanding.
Check the grid frequency and the grid cable connection in the
Sunny Boy enclosure. If the grid frequency is out of range due
to your local grid conditions contact the utility company and
ask, if it is permissable to change the grid monitoring param-
eters of the inverter. Contact SMA about how to change the
grid monitoring parameters of your Sunny Boy. If the grid fre-
quency is within the tolerable range and you still observe the
failure message “Fac-Bfr“ or “Fac-Srr“ contact SMA.
Disturbance
Imax
Overcurrent on the AC side. This failure code is indicated in
case the current to the AC grid exceeds the specification. This
may happen in case of harmfull interference on the grid. If
you observe “Imax“ often, check your grid. For assistance
contact SMA.
Warning
VpvMax
DC input voltage above the tolerable maximum value
Error
MSD-UAC
MSD-VAC
MSD-FAC
MSD-Idif
Internal measurement comparison error: The Sunny Boy mea-
sured values of BFR and SRR are too different from each oth-
er.
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Summary of Contents for Sunny Boy 6000
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