Product Manual

45
EN-US
431 Software problem
Inverter does not feed energy
into the grid.
Carry out AC reset (switch au-
tomatic circuit breaker off and
on); update inverter firmware;
If status code persists: contact
a Fronius-trained service tech-
nician.
436
Function incompatibility (one
or more PC boards in the in-
verter are not compatible with
each other, e.g.,after PC board
replacement)
The inverter will automatically
attempt to connect again and,
if possible, resume feeding en-
ergy into the grid
Update inverter firmware;
If status code persists: contact
a Fronius-trained service tech-
nician.
437 Power module problem
438
Function incompatibility (one
or more PC boards in the in-
verter are not compatible with
each other, e.g.,after PC board
replacement)
The inverter will automatically
attempt to connect again and,
if possible, resume feeding en-
ergy into the grid
Update inverter firmware;
If status code persists: contact
a Fronius-trained service tech-
nician.
443
Intermediate circuit voltage too
low or unsymmetrical
Inverter does not feed energy
into the grid.
If status code persists: contact
a Fronius-trained service tech-
nician.
445
Limit value setting not permit-
ted
Inverter does not feed energy
into the grid for safety reasons.
Update the inverter firmware.
If status code persists: contact
a Fronius-trained service tech-
nician.
447 Insulation fault
If this status code keeps recur-
ring, contact your system in-
staller.
448
Neutral conductor not connect-
ed
450 No guard found
451 Memory error detected
The inverter will automatically
attempt to connect again and,
if possible, resume grid power
feed operation.
If status code persists: contact
a Fronius-trained service tech-
nician.
452
Communication problem be-
tween processors
453 Brief grid voltage error
454 Brief grid frequency error
456 Anti-islanding function has
stopped running properly
457 Grid relay stuck
Inverter does not feed energy
into the grid.
If status code persists:
contact a Fronius-trained ser-
vice technician.
459
Error receiving measuring sig-
nal for the insulation test
460
Reference power source for
the digital signal processor
(DSP) is operating outside of
tolerances
461 Error in DSP data memory
462 Error in DC feed-in monitoring
routine
463 AC polarity reversed, AC con-
nector plugged in incorrectly
Code Description Details Rectification