Code
Description
Behaviour Remedy
482 Setup interrupted after initial start-up
The inverter is not feeding
any energy into the grid.
Perform AC reset
(switch automatic cir-
cuit breaker off and on
again); update inverter
firmware; *)
484 -
489
CAN transmit buffer is full
The inverter is not feeding
any energy into the grid.
Perform AC reset
(switch automatic cir-
cuit breaker off and on
again); update inverter
firmware; *)
*) If the status code is displayed all the time: Notify a Fronius-trained service engineer.
**) 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 acknowledged by
pressing a key (however, the inverter continues to operate normally in the background).
Code Description Behaviour Remedy
502 Insulation fault on solar mod-
ules or on the battery
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 Unable to communicate with
the data storage unit
Data storage unit
warning message
*)
517
Power derating caused by
excessively high temperat-
ures
When power derating
occurs, a warning mes-
sage is shown on the
display.
If necessary, purge cooling air
openings and heat sink;
fault is rectified automatically; **)
519 Unable to communicate with
the data storage unit
Data storage unit
warning message
*)
520
No energy fed into the grid by
the PV 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?); *)
522 DC low (PV). No PV voltage
available.
Warning message on
the display
In the case of hybrid systems, this
message appears overnight if no
photovoltaics are connected to the
Fronius Symo Hybrid or in standby
mode; *)
125
EN