Error Messages - Schüco SUNNY BOY Series User Manual

Measurement Channels and Messages
6.3 Error messages
If an error occurs, the Sunny Boy and Sunny Mini Central generate a message which depends on the
operating mode and the error detected.
Message
!PV-Overvoltage!
!DISCONNECT DC!
ACVtgRPro
Bfr-Srr
CAN
Check L-N-PE
Check Varistor
32 SB_SMC_Schueco-BEN093730
Description and corrective measure
Overvoltage at DC input.
Corrective measures
• Please contact your installer who will immediately disconnect the
PV generator from the inverter! Otherwise, the inverter may be
damaged.
• Your installer should check the DC voltage, as described in the
inverter installation guide.
The 10-minute-average grid voltage is no longer within the permissible
range. This can be caused by either of the following:
• The grid voltage at the connection point is too high.
• The grid impedance at the connection point is too high.
The inverter disconnects to assure compliance with the voltage quality of
the grid.
Corrective measures
• Please contact your installer or the SMA Solar Technology
Serviceline.
Internal measurement comparison fault or hardware defect.
Corrective measures
• Please contact your installer or the SMA Solar Technology
Serviceline if this problem recurs.
Internal communication fault.
Corrective measures
• Please contact your installer or the SMA Solar Technology
Serviceline if this problem recurs.
L and N are swapped on the AC connection or PE is not connected (only
applies for Sunny Mini Central models 9000TL / 1000TL / 11000TL).
Corrective measures
• Please contact your installer to check the AC connection.
At least one of the varistors is defective (only applies to Sunny Mini
Central models 9000TL / 1000TL / 11000TL).
Corrective measures
• Have your installer check the function of the varistors, as described
in the inverter installation guide.
SMA Solar Technology AG
User Manual