SMA WB 3000-21 Installation - Manual (Page 69)

SMA Solar Technology AG 11 Troubleshooting
Installation Manual WB3-5TL-21-IA-en-10 69
7305 Update RS485i module
failed Internal error. The inverter continues to feed into the
power distribution grid.
Corrective measures:
• Re-try update.
• If this message is displayed again, contact the
SMA Service Line.
7307 Update BT failed Internal error. The inverter continues to feed into the
power distribution grid.
Corrective measures:
• Re-try update.
• If this message is displayed again, contact the
SMA Service Line.
7311 Update language table
failed Internal error. The inverter continues to feed into the
power distribution grid.
Corrective measures:
• Re-try update.
• If this message is displayed again, contact the
SMA Service Line.
7401 Varistor defective At least 1 of the thermally monitored varistors is defective.
Corrective measures:
• Check the function of the varistors
(see section 11.5).
7508 External fan fault The external fan is defective or blocked.
Corrective measures:
• Ensure that the fan is clean.
• Ensure that the external fan is correctly connected.
7701 to
7703 Self diagnosis
Interference device The cause must be determined by the SMA Service Line.
Corrective measures:
• Contact the SMA Service Line.
8001 Derating occurred The inverter has reduced its power output for more than
ten minutes due to excessive temperature.
Corrective measures:
• If this message is frequently displayed, clean the
cooling fins and air ducts (see Section 11.3).
• Ensure that the inverter has sufficient ventilation.
Event
number Display message Cause and corrective measures