Fronius Energy Package, Operating Instructions Manual, Page: 126 / 148

Code Description Behaviour Remedy
417 Hardware ID problem
The inverter will auto-
matically attempt to
connect again and, if
possible, will resume
feeding energy into the
grid.
Update inverter firm-
ware; *)
420 Unable to communicate with sys-
tem monitoring
425 Unable to communicate with the
power stage set
426 -
427 Possible hardware fault
431,
432 Software problem
The inverter is not feed-
ing any energy into the
grid.
Perform AC reset
(switch automatic
circuit breaker off
and on again); up-
date inverter firm-
ware; *)
436 Functional incompatibility (one or
more PC boards in the inverter are
not compatible with each other, e.g.
after a PC board has been re-
placed)
The inverter will auto-
matically attempt to
connect again and, if
possible, will resume
feeding energy into the
grid.
Update inverter firm-
ware; *)
437 Power stage set problem
438 Functional incompatibility (one or
more PC boards in the inverter are
not compatible with each other, e.g.
after a PC board has been re-
placed)
The inverter will auto-
matically attempt to
connect again and, if
possible, will resume
feeding energy into the
grid.
Update inverter firm-
ware; *)
445 - Compatibility error (e.g. due to
replacement of a PC board)
- Invalid power stage set config-
uration
The inverter is not feed-
ing any energy into the
grid.
Update inverter firm-
ware; *)
447 Insulation fault (PV or battery) The inverter is not feed-
ing any energy into the
grid. *)
450 Guard cannot be found
451 Memory error detected
The inverter will auto-
matically attempt to
connect again and, if
possible, will resume
feeding energy into the
grid.
*)
452 Communication error between the
processors
453 Grid voltage and power stage set
are incompatible
454 Grid frequency and power stage set
are incompatible
456 Anti-islanding function is no longer
being implemented correctly
457 Grid relay is sticking or the neutral
conductor ground voltage is too
high The inverter is not feed-
ing any energy into the
grid.
Check the grounding
(the neutral con-
ductor ground
voltage must be less
than 30 V); *)
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