Status codes –
Class 9
Class 9 status codes only affect the Fronius Solar Battery. These are only displayed on
the system monitoring page and are not shown on the inverter display.
Code Description Behaviour Remedy
975
Software on device is incon-
sistent
The inverter is not feeding
any energy into the grid
Update inverter firmware; *)
976 Unregistered battery module
detected
Battery operation not pos-
sible, feed-in resumes
Enter activation key for battery
module; *)
977 Incorrect number of battery
modules connected to
Fronius Solar Battery
Too many modules detec-
ted: Battery operation not
possible
Too few modules detected:
Error message output,
operation resumes
978 Communication error
between Fronius Symo
Hybrid and Fronius Solar Bat-
tery
Battery operation not pos-
sible, feed-in resumes
Check wiring; **)
979 Communication error
between Fronius Symo
Hybrid and Fronius Solar Bat-
tery
Battery operation not pos-
sible, feed-in resumes
Displayed in standby mode, if
not in standby mode - check
wiring; **)
980 No communication between
Fronius Symo Hybrid and
Fronius Solar Battery
Battery operation not pos-
sible, feed-in resumes
Switch on Fronius Solar Battery;
check wiring; **)
981 Software version of Fronius
Solar Battery is inconsistent
Battery operation not pos-
sible, feed-in resumes
*)
983 Communication error
between battery controller
and battery modules
Battery operation not pos-
sible, feed-in resumes
Check wiring in Fronius Solar
Battery; check numbers of indi-
vidual battery modules; check
termination plug
984 Battery controller has
stopped Charge mode
Battery operation not pos-
sible, feed-in resumes
Check error message on
Fronius Solar Battery display; *)
985 Undervoltage at Fronius
Solar Battery
Fronius Solar Battery has
tripped due to under-
voltage. Battery operation
not possible, feed-in
resumes
*)
986 Overtemperature at Fronius
Solar Battery
Fronius Solar Battery has
tripped due to overtemper-
ature. Battery operation
not possible, feed-in
resumes
Reduce ambient temperature;
switch off Fronius Solar Battery
and activate it again after wait-
ing an appropriate amount of
time; *)
987 Undertemperature at Fronius
Solar Battery
Fronius Solar Battery has
tripped due to undertem-
perature. Battery operation
not possible, feed-in
resumes
Increase ambient temperature;
switch off Fronius Solar Battery
and activate it again after wait-
ing an appropriate amount of
time; *)
988 Communication error
between Fronius Symo
Hybrid and Fronius Smart
Meter
No meter data available
Battery operation not pos-
sible, feed-in resumes
Check wiring; **)
128
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