SMA 3000TL-US, Installation Manual

Page: 61 / 88

SMA America, LLC 11 Troubleshooting
Installation Manual SB3-5TLUS22-IA-en-12 61
301 Grid fault The 10-minute average line voltage is no longer
within the permissible range. The line voltage or
grid impedance at the connection point is too
high. The inverter disconnects from the utility grid
to comply with the power quality.
Corrective measures:
• Check whether the line voltage at the
connection point of the inverter is
permanently in the permissible range.
If the line voltage is outside the permissible
range due to local grid conditions, contact
the grid operator. Ask the grid operator
whether the voltage can be adapted at the
feed-in point or if it would be acceptable to
change the monitored operating limits.
If the line voltage is permanently in the
permissible range and this message is still
displayed, contact the SMA Service Line.
401 to 404 Grid fault The inverter is no longer in grid-parallel
operation. The inverter has stopped feeding into
the utility grid.
Corrective measures:
• Check the grid connection for strong,
short-term frequency variations.
501 Grid fault The power frequency is not within the permissible
range. The inverter has disconnected from the
utility grid.
Corrective measures:
• If possible, check the power frequency and
observe how often fluctuations occur.
If there is a high number of fluctuations and
this message is displayed frequently,
contact the grid operator and ask whether
they approve a change of the operating
parameters of the inverter.
If the grid operator approves, discuss any
changes to the operating parameters with
the SMA Service Line.
Event number Display message Cause and corrective measures