Fronius Symo Advanced 10.0-3-M - Status Codes - Class

Code Description Behaviour Remedy
479 Intermediate circuit voltage relay is
switched off
The inverter will auto-
matically attempt to
connect again and, if
possible, will resume
feeding energy into the
grid
*)
480,
481
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 is not feed-
ing any energy into the
grid.
Update inverter firm-
ware; *)
482 Setup interrupted after initial start-
up The inverter is not feed-
ing any energy into the
grid.
Restart Setup after
an AC reset (switch
automatic circuit
breaker off and on
again)
483 Voltage U
DC fixed
on MPP2 string
out of limits
The inverter is not feed-
ing any energy into the
grid.
Check MPP settings;
*)
485 CAN transmit buffer is full
The inverter is not feed-
ing any energy into the
grid.
Perform AC reset
(switch automatic
circuit breaker off
and on again; *)
489 Permanent overvoltage on interme-
diate circuit capacitor (five 479
status codes in a row)
The inverter is not feed-
ing any energy into the
grid.
*)
*) If the status code is displayed all the time: notify a Fronius-trained service
technician
**) If this status code keeps recurring, contact your system engineer
Status codes –
Class 5
Class 5 status codes do not generally interfere with feeding energy into the grid,
but can cause restrictions. These status codes are displayed until they are ac-
knowledged by pressing a key (however, the inverter continues to operate nor-
mally in the background).
Code Description Behaviour Remedy
502 Insulation error on the sol-
ar modules
Warning message is
shown on the display
**)
509
No energy fed into the grid
in the past 24 hours
Warning message is
shown on the display
Acknowledge status code;
check whether all the conditions
for the problem-free feeding of
energy into the grid have been
met (e.g. are the solar modules
covered with snow?); **)
515 Unable to communicate
with filter
Warning message on
the display
*)
516 No communication pos-
sible with the storage unit
Storage unit warning
message
*)
106