Class 4 Status Codes - Fronius Symo Serie Instructions De Service

Code Description
305 No feed-in despite closed relay
There is insufficient PV power for grid
306
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.
308 Intermediate circuit voltage too high
309 DC input voltage MPPT1 too high
311 DC strings polarity reversed
313 DC input voltage MPPT2 too high
314 Timeout current sensor calibration
315 AC current sensor fault
316 InterruptCheck fail
325 Overtemperature in connection area
326 Fan 1 error
327 Fan 2 error
*) If status code persists: Contact a Fronius-trained service technician
**) Fault is corrected automatically. If this status code keeps recurring, contact your system
installer
Class 4 Status Class 4 status codes may require the intervention of a trained Fronius service technician.
Codes
Code Description
401 Communication with power module is
not possible
406 AC module temperature sensor faulty
(L1)
407 AC module temperature sensor faulty
(L2)
408 Direct component measured in the sup-
ply grid too high
412 The "fixed voltage" setting has been se-
lected instead of MPP voltage operation
and the voltage is set to a value that is
too low or too high.
415 Safety cut-out triggered by option card or
RECERBO
416 No communication between power mod-
ule and control unit
52
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.
Behavior
The inverter will automati-
cally attempt to connect
again and, if possible, re-
sume feeding energy into
the grid
-
Inverter does not feed ener-
gy into the grid.
The inverter will automati-
cally attempt to connect
again and, if possible, re-
sume feeding energy into
the grid
Remedy
**)
Wait for sufficient solar
radiation;
**)
**)
*)
Remedy
*)
**)
*)
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