Code
Description
445
Invalid limit value settings
447
Insulation fault
Neutral conductor not connect-
448
ed
450
Guard cannot be found
451
Memory error detected
Communication error between
452
the processors
453
Short-term grid voltage error
454
Short-term grid frequency error
456
Anti-islanding function is no
longer implemented correctly
457
Grid relay sticking
Error when recording the
459
measuring signal for the insu-
lation test
Reference voltage source for
the digital signal processor
460
(DSP) is working out of toler-
ance
461
Fault in the DSP data memory
462
Error with DC feed monitoring
routine
463
Reversed AC polarity, AC con-
nector inserted incorrectly
474
RCMU sensor faulty
Solar module ground, insula-
475
tion fault (connection between
solar module and ground)
476
Driver supply voltage too low
Functional incompatibility (one
or more PC boards in the in-
480,
verter are not compatible with
481
each other, e.g. after a PC
board has been replaced)
482
Start-up incomplete
Voltage U
DC fixed
483
string out of limits
485
CAN transmit buffer is full
Behaviour
The inverter is not feeding any
energy into the grid for safety
reasons.
The inverter will automatically
attempt to connect again and,
if possible, will resume feeding
energy into the grid
The inverter is not feeding any
energy into the grid.
The inverter is not feeding any
energy into the grid.
The inverter is not feeding any
energy into the grid.
on MPP2
The inverter is not feeding any
energy into the grid.
Remedy
Update the inverter firmware;
if the status code is displayed
all the time: notify a Fronius-
trained service engineer
If this status code keeps recur-
ring, contact your system engi-
neer
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
Notify a Fronius-trained ser-
vice engineer
If this status code keeps recur-
ring, contact your system engi-
neer
Update the inverter firmware;
if the status code is displayed
all the time: notify a Fronius-
trained service engineer
Perform AC reset (turn auto-
matic circuit breaker off and
on), complete start-up
Check the MPP settings;
if the status code is displayed
all the time: notify a Fronius-
trained service engineer
Carry out an AC reset (switch
the automatic circuit breaker
off and on);
if this status code is displayed
all the time: notify a Fronius-
trained service engineer
47