Code
Description
458
Error during measuring signal detection
459
Error during measuring signal detection
for insulation test
460
Reference power source for the digital
signal processor (DSP) is operating out-
side of tolerances
461
Error in DSP data memory
462
Error in DC feed-in monitoring routine
463
AC polarity reversed, AC connector
plugged in incorrectly
474
RCMU sensor faulty
475
Insulation error (connection between so-
lar module and ground)
476
Supply voltage for driver too low
480 -
Function incompatibility (one or more PC
481
boards in the inverter are not compatible
with each other, e.g., after PC board re-
placement)
482
Setup interrupted after initial commis-
sioning
483
Voltage U
DCfix
of valid range
485
CAN transmission buffer is full
*) If status code persists: Contact a Fronius-trained service technician
**) If this status code keeps recurring, contact your system installer
Class 5 Status
Class 5 status codes generally do not impair grid power feed operation, but can lead to lim-
Codes
itations. They will be displayed until the status code is acknowledged by pressing a key (the
inverter, however, continues working normally in the background).
Code
Description
502
Insulation fault on solar mod-
ules
509
No feed-in within the last 24
hours
515
No internal communication
with filter
516
Communication with memory
unit not possible
50
for MPP2 string is outside
Behavior
Warning message is
shown on the display
Warning message is
shown on the display
Warning message on
the display
Warning message of
memory unit
Behavior
Inverter does not feed ener-
gy into the grid.
Inverter does not feed ener-
gy into the grid.
Inverter does not feed ener-
gy into the grid.
Inverter does not feed ener-
gy into the grid.
Inverter does not feed ener-
gy into the grid.
Inverter does not feed ener-
gy into the grid.
Remedy
**)
Acknowledge status code;
Check whether all conditions for
problem-free grid power feed opera-
tion are met (e.g., whether solar mod-
ules are covered with snow); **)
*)
*)
Remedy
*)
**)
Update inverter firm-
ware; *)
Restart setup after AC
reset (switch automatic
circuit breaker off and
on)
Check MPP settings; *)
Carry out AC reset
(switch automatic circuit
breaker off and on); *)