32 Operation and installation manual SOLIVIA 5.0 AP G3 TR
9. Diagnostics and data evaluation
9.1 Malfunctionrectication
The solar inverter is provided with an automatic diagnostics system which indepen-
dently identies certain faults and which can make them visible on the display.
Troubleshooting in the eld
In principle, it is always worth attempting a reset by reinitializing the solar inverter when-
ever an error message appears on the display.
To reset the device, proceed as follows:
1. Isolate the solar inverter from the grid (open automatic circuit breaker).
2. Switch off the DC disconnector.
3. Wait: approx. 1 minute.
4. Switch DC disconnector back on.
5. Switch in grid (close automatic circuit breaker).
(In the eld, the rst step is to scan for potential fault causes that could be picked up by
the solar inverter and result in tripping.)
Various key parameters can be scanned via the display, thereby enabling conclusions
to be drawn about potential fault causes.
Current values in the N menu
AC Voltage -> Display of current output voltage -> Voltage limiting values
AC Frequency -> Display of current grid frequency -> Frequency limiting values
Solar Voltage -> Display of current PV cell voltage -> Switch-in threshold
9.2 Display messages
LED STATUS
DISPLAY
MESSAGE
CAUSE ELIMINATION
green: <on>
red: <on>
yellow: <on>
Display communication
faulty.
If the fault persists after the device
has been reset, please inform your
service technician.
green: <off>
red: <off>
yellow: <on>
AC frequency
failure
Grid frequency overshoo-
ting or undershooting
specied limit range.
Check the grid frequency via the
display in the N menu.
green: <off>
red: <off>
yellow: <on>
AC voltage
failure
Grid voltage overshooting
or undershooting specied
limit range.
Check the grid voltage via the
display in the N menu.
If no voltage present, check grid
automatic circuit breaker.
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