75
EN
Class 7 status
codes
Class 7 status codes relate to the control system, the configuration and inverter data re-
cording, and may directly or indirectly affect the process of feeding energy into the grid.
517
Power derating caused by too
high a temperature
When power derating occurs, a
warning message is shown on
the display
Purge cooling air openings and
heat sink if necessary;
fault is rectified automatically;
If this status code keeps recur-
ring, contact your system engi-
neer
518
Internal DSP malfunction
Warning message is shown on
the display
If the status indicator appears
all the time: notify a Fronius-
trained service engineer
535
Error during fan self-test
536
Main fan error
555
Circulating fan error
558
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)
Possible error displays or mal-
functions on the inverter
If this status code keeps recur-
ring, contact your system engi-
neer
560
Power derating caused by
overfrequency
This status code is displayed
when the grid frequency be-
comes excessively high.
The inverter will then reduce its
output.
The status indicator will contin-
ue to be displayed until the in-
verter has returned to normal
operation.
As soon as the grid frequency
is back within the permissible
range and the inverter has re-
turned to normal operation, the
fault is rectified automatically.
If this status code keeps recur-
ring, contact your system engi-
neer.
597
External overvoltage protec-
tion has tripped (connected to
the "IN1" NO/alarm contact ter-
minals)
Warning message is shown on
the display
Replace overvoltage protec-
tion - notify a Fronius-trained
service engineer
598
External overvoltage protec-
tion has tripped (connected to
the "IN2" NO/alarm contact ter-
minals)
599
External overvoltage protec-
tion has tripped (connected to
the "IN3" NO/alarm contact ter-
minals)
Code
Description
Behaviour
Remedy
Code
Description
Behaviour
Remedy
721
EEPROM has been reinitial-
ised or EEPROM is faulty
Warning message is shown on
the display
Acknowledge status code;
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
751
Time lost
Warning message is shown on
the display
Reset the time and date on the
inverter
If the status code is displayed
all the time: notify a Fronius-
trained service engineer
752
Real Time Clock module com-
munication error
753
Time not set for a long period
of time
(> 1/2 year)
