SMA SB 3600SE-10 Service Manual - Manual (Page 21)

Error number Display message, cause and corrective measures
7333 Update transport failed
The update was not carried out successfully.
Corrective measures:
• Restart the update.
7337 Update BMS failed
The cause must be determined by the SMA Service Line.
Corrective measures:
• Contact the SMA Service Line.
7340 Update communication failed
The cause must be determined by the SMA Service Line.
Corrective measures:
• Contact the SMA Service Line.
7401 Varistor defective
At least one of the thermally monitored varistors is defective.
Corrective measures:
• Check the function of the varistors (see Section 6, page 29).
7701 to 7703 Self diagnosis > Interference of 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:
• Clean the cooling fins on the rear of the enclosure and the air ducts
on the top using a soft brush.
• Ensure that the inverter has sufficient ventilation.
8902 Self-diagnosis > Battery controller relay defective
The cause must be determined by the SMA Service Line.
Corrective measures:
• Contact the SMA Service Line.
8903 Battery controller defective > Disconnect PV array, open DC
switch
The cause must be determined by the SMA Service Line.
Corrective measures:
• Contact the SMA Service Line.
4 Troubleshooting SMA Solar Technology AG
Service Manual 21 SB36-50SE-SG-en-10