Status Codes - Class 5; Status Codes – Class 4 - Fronius 3.0-3-S Operating Instructions Manual

Status codes – Class 5 status codes do not generally interfere with feeding energy into the grid, but can
Class 5 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
502 Insulation error on the solar
modules
509
No energy fed into the grid in
the past 24 hours
515 Unable to communicate with
filter
516 No communication possible
with the storage unit
Power derating caused by too
517
high a temperature
518 Internal DSP malfunction
519 No communication possible
with the storage unit
520
No energy fed into the grid by
MPPT1 in the past 24 hours
522 DC low String 1
523 DC low String 2
558, Functional incompatibility (one
559 or more PC boards in the in-
verter are not compatible with
each other, e.g. after a PC
board has been replaced)
Power derating caused by
560
overfrequency
564 Functional incompatibility (one
or more PC boards in the in-
verter are not compatible with
each other, e.g. after a PC
board has been replaced)
566
Arc detector switched off
(e.g. during external arc moni-
toring)
572 Power limited by the power
stage set
Behaviour
Warning message is
shown on the display
Warning message is
shown on the display
Warning message on
the display
Storage unit warning
message
When power derating
occurs, a warning mes-
sage is shown on the
display.
Warning message on
the display
Storage unit warning
message
Warning message is
shown on the display
Warning message on
the display
Warning message on
the display
Displayed when grid fre-
quency becomes exces-
sively high. The power is
reduced.
Warning message on
the display
The status code is dis-
played every day until
the arc detector is reac-
tivated.
Power is being limited
by the power stage set
Remedy
**)
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?); **)
*)
*)
If necessary, purge cooling air open-
ings and heat sink;
fault is rectified automatically; **)
*)
*)
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?); *)
*)
Update inverter firmware; *)
As soon as the grid frequency is back
within the permissible range and the
inverter has returned to normal oper-
ation, the fault is rectified automati-
cally; **)
Update inverter firmware; *)
No error
Confirm status code by pressing 'En-
ter'
*)
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