SMA SB 3300-11 Installation - Manual (Page 52)

Troubleshooting SMA Solar Technology AG
52 SB33-38-11-IA-en-62 Installation Manual
Derating The "Derating" operating state is a normal operating state which may
occur occasionally and can have several causes.
Once the inverter enters the "Derating" operating state, it will display the
"Derating" warning until the next total shutdown of the device
(at the end of the day).
Corrective measures
• Check the heat dissipation as described in section 8.2 "Checking
the Heat Dissipation" (page 45).
dZac-Bfr
dZac-Srr Sudden changes in grid impedance exceed the permissible range
("Bfr" or "Srr" are internal messages of no relevance for the user).
The inverter disconnects itself from the power distribution grid for safety
reasons.
Corrective measures
Check the grid impedance and observe how often major deviations
occur.
• If repeated frequency variations occur and this is causing
"dZac-Bfr" or "dZac-Srr" disturbances, ask the grid operator to
agree to a modification of the operating parameters (dZac-Max).
• Discuss any changes to the operating parameter with the
SMA Service Line.
EEPROM Transition fault while data is being written or read from EEPROM. The
data is not relevant for safe operation.
• This fault has no effect on the performance of the inverter.
EEPROM dBh EEPROM data is defective, the device has switched off because the loss
of data has disabled important functions of the inverter.
Corrective measures
• Contact the SMA Service Line.
EeRestore One of the duplicate records in the EEPROM is defective and has been
reconstructed without loss of data.
• This error message only serves to inform you and has no effect on
the performance of the inverter.
Fac-Bfr
Fac-Srr
FacFast The power frequency is no longer within the permissible range
("Bfr" or "Srr" is an internal message of no relevance for the user).
The inverter disconnects itself from the power distribution grid for safety
reasons.
Corrective measures
• If the power frequency is within the tolerable range and the faults
"Fac-Bfr", "Fac-Srr" or "FacFast" are often displayed, contact the
SMA Service Line.
Message Description and corrective measure