SMA SB 1300TL Service Manual - Manual (Page 12)

Message Cause and corrective measure
ACVtgRPro The ten-minute average value of the grid voltage is no longer within
the permissible range. The grid voltage or grid impedance at the
connection point is too high. The inverter disconnects from the utility
grid to maintain power quality.
Corrective measures:
• Check whether the grid voltage at the connection point of the
inverter is permanently in the permissible range.
If the line voltage is 253 V or higher, contact the grid operator.
Ask the grid operator whether the voltage can be adapted at
the feed-in point or whether it would be acceptable to change
the threshold of the ACVtgRPro/Voltage increase
protection parameter.
If the grid voltage is permanently within the permissible range
and this message is still displayed, contact the
SMA Service Line.
Bfr-Srr Internal measurement comparison fault or hardware defect.
Corrective measures:
• Contact the SMA Service Line if this disturbance occurs
frequently.
Check PE The grounding cable is not connected.
Corrective measures:
• Ensure that the AC cable is correctly connected (see the
operating manual of the inverter).
• If the AC cable is connected correctly and this message is still
displayed, contact the SMA Service Line.
Derating The inverter reduces its power output due to overheating.
Corrective measures:
• Ensure sufficient ventilation.
dI-Mess Deviation in the differential current measurement. If this message is
displayed frequently, permanent operation inhibition will be trig-
gered.
Corrective measures:
• Contact the SMA Service Line.
4 Troubleshooting SMA Solar Technology AG
Service Manual SB13-21TL-SG-en-11 12