Sma SUNNY BOY User Manual download pdf (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

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Sma SUNNY BOY User Manual Page 33