Class 3 Status Codes - Fronius Symo 10.0-3 208-240 Instructions De Service

Code Description
240 Arc detected
241 Arc detected
242 Arc detected
245 Arc detector self test failed
Arc detector power sensor
247
faulty
249 Arc detector faulty
*) If status code persists: Contact a Fronius-trained service technician.
**) The fault is rectified automatically; if this status code keeps recurring, contact your sys-
tem installer
Class 3 Status Class 3 comprises status codes that may appear during grid power feed operation but do
Codes not cause a permanent interruption to 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.
Code Description
301 Overcurrent (AC)
302 Overcurrent (DC)
303 Overtemperature of DC module
304 Overtemperature of AC module
305 No feed-in even though relay is
closed
Available solar output is too low for
306
grid power feed operation
DC low
307 DC input voltage is too low for grid
power feed operation
IMPORTANT! Status codes 306 (Power low) and 307 (DC low) appear naturally every morning and evening due
to low solar irradiance. These status codes are not the result of a fault.
Behavior
The status code is displayed
for approx. 4 seconds
Status code 241 is displayed
directly after 240; the inverter
disconnects from the grid for
safety reasons.
Status code 242 is displayed
after status code 241 is reset.
The inverter disconnects from
the grid.
The inverter disconnects from
the grid.
Behavior
Short interruption of grid power
feed operation.
The inverter returns to the
startup phase.
Short interruption of grid power
feed operation.
The inverter returns to the
startup phase.
Short interruption of grid power
feed operation.
The inverter returns to the
startup phase.
Short interruption of grid power
feed operation.
The inverter returns to the
startup phase.
Remedy
-
Before resetting the inverter af-
ter a detected arc, check the
entire affected photovoltaic
system for any damage.
Reset the status code by
pressing the "Enter" key.
Reset the status code by
pressing the "Enter" key.
The inverter starts grid power
feed operation again.
**)
Carry out an AC reset;
The test is repeated. *)
*)
Remedy
*)
Purge cooling air open-
ings and cooling ele-
ments; **)
**)
Wait for sufficient sun-
light;
**)
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