SMA SUNNY BOY - Manual (Page 33)

SMA Solar Technology AG Measurement Channels and Messages
User Manual SB_SMC-BEN092840 33
DCBFS-Startup Internal communications fault.
Corrective measures
• Please contact your installer or the SMA Solar Technology
Serviceline if this problem recurs.
DC fuse At least one of the string fuses is defective (only applies to Sunny Mini
Central models 9000TL / 1000TL / 11000TL).
Corrective measures
• Have your installer check the string fuses and replace them where
necessary. Further information is to be found in the inverter
installation guide.
DCBFS Version DC-BFS has been installed with the wrong firmware version.
Corrective measures
• Please contact your installer or the SMA Solar Technology
Serviceline when this problem occurs.
Delta Bfr-Srr Internal measurement comparison fault or hardware defect.
Corrective measures
• Please contact your installer or the SMA Solar Technology
Serviceline when this problem occurs.
Derating Once the inverter enters the "Derating" mode, it will display the "Derating"
warning until the next total shutdown of the device (at the end of the
day).
Corrective measures
• See Section 3.3.5 "The green LED goes out briefly" (page 14) for
more information on this warning.
dFac-Bfr
dFac-Srr Drastic grid frequency fluctuations exceed the permissible range ("Bfr" or
"Srr" are internal messages which are of no relevance to the user).
For safety reasons, the inverter disconnects itself from the grid.
Corrective measures
• Have your installer check the grid frequency and the incidence of
major fluctuations. If repeated frequency variations occur and this
is causing "dFac-Bfr" or ""dFac-Srr" errors, your installer should ask
the utility operator to agree to a modification of the operating
parameters (dFac-Max).
• The installer is responsible for changing the suggested parameters
and making the necessary arrangements with the SMA Solar
Technology Serviceline.
Message Description and corrective measure