SMA SUNNY BOY 3800TL-US Installation Manual page 62

11 Troubleshooting
Event number
601
701
801
62 SB3-5TLUS22-IA-en-16
Display message
Grid fault
Frq. not permitted
Check parameters
Waiting for grid
voltage
Grid failure
Check fuse
Cause and corrective measures
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.
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.
There is no line voltage at the AC output of the
inverter.
Corrective measures:
• Check the fuse and replace it if necessary.
• Check AC installation.
• Check whether there is a general power
outage.
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Installation Manual