42
Class 3 Status
Codes
Class 3 includes status codes that may appear during grid power feed operation and do
not cause permanent interruption of the grid power feed operation.
After automatic disconnection from the grid and waiting for its conditions to return to those
stipulated, your inverter will try to resume grid power feed operation.
240
Arc detected
The status code is displayed
for approx. 4 seconds.
-
241
Arc detected
The status code 241 is dis-
played directly after 240; the
inverter disconnects from the
grid for safety reasons.
If an arc has been detected,
check the entire affected PV
system for damage before re-
setting the inverter.
Reset status code by pressing
the "Enter" key.
242
Arc detected
Status code 242 is displayed
after resetting status code 241.
Reset the status code by
pressing the "Enter" key.
The inverter resumes grid
power feed operation.
If the status code keeps recur-
ring, contact your system in-
staller.
245
Arc detector self test failed
The inverter disconnects from
the grid.
Reset AC.
The test is repeated.
If the status code persists:
contact a Fronius-trained ser-
vice technician.
247
Arc detector current sensor de-
fective
The inverter disconnects from
the grid.
If status code persists: contact
a Fronius-trained service tech-
nician.
249
Arc detector defective
Code
Description
Details
Rectification
Code
Description
Details
Rectification
301
Over-current (AC)
Brief interruption of grid power
feed operation due to overcur-
rent in the inverter.
The inverter returns to the
startup phase.
Error is automatically rectified;
if status code persists: contact
a Fronius-trained service tech-
nician.
302
Over-current (DC)
303
Power stage set over tempera-
ture
Brief interruption of grid power
feed operation due to over
temperature.
The inverter returns to the
startup phase.
If required, clean cool air vents
and cooling elements with
compressed air.
The fault is rectified automati-
cally.
If this status code keeps recur-
ring, contact your system in-
staller.
304
Interior temperature too high
