9 Troubleshooting
SMA America, LLC
66
SB3-5TLUS22-IA-en-10
Installation Manual
601
Grid fault
The inverter has detected an excessively high
proportion of direct current in the line current.
Corrective measures:
• Check the grid connection for direct
current.
If this message is displayed frequently,
contact the grid operator and check
whether it is possible to raise the limiting
value for monitoring on the inverter.
701
Frq. not permitted
Check parameter
The power frequency is not within the permissible
range. The inverter has disconnected from the
power distribution 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.
801
Waiting for grid
voltage
Grid failure
Check fuse
There is no line voltage at the inverter's AC
output.
Corrective measures:
• Check the fuse and replace it if necessary.
• Check AC installation.
• Check whether there is a general power
outage.
Event number
Display message
Cause and corrective measures
