Status Codes - Class - Fronius 3.0-3-S Operating Instructions Manual

Code Description
301 Overcurrent (AC)
302 Overcurrent (DC)
303 DC module overtemperature
304 AC module overtemperature
305 No power being fed in, despite closed
relay
PV output too low for feeding energy
306
into the grid
DC low
307 DC input voltage too low for feeding
energy into the grid
IMPORTANT! Due to the low level of insolation early in the morning and in the evening, the status codes 306
(Power low) and 307 (DC low) are displayed routinely at these times of day. These status codes do not indicate
any kind of fault.
308 Intermediate circuit voltage too high
309 DC input voltage MPPT 1 too high
311 Polarity of DC strings reversed
313 DC input voltage MPPT2 too high
314 Current sensor calibration timeout
315 AC current sensor error
316 InterruptCheck fail
325 Overtemperature in the connection
area
326 Fan 1 error
327 Fan 2 error
*) If the status code is displayed all the time: notify a Fronius-trained service engineer
**) Fault is rectified automatically. If this status code keeps recurring, contact your system
engineer
Status codes – Some of the class 4 status codes necessitate intervention by a Fronius-trained service
Class 4 technician.
Code Description
401 Unable to communicate with the power
stage set
406 AC module temperature sensor faulty
(L1)
407 AC module temperature sensor faulty
(L2)
408 DC component measured in the grid too
high
46
Behaviour
Short-term interruption while
feeding energy into the grid.
The inverter resumes its start-
up routine.
Short-term interruption while
feeding energy into the grid.
The inverter resumes with its
startup routine.
Short-term interruption while
feeding energy into the grid.
The inverter resumes with its
startup routine.
Short-term interruption while
feeding energy into the grid
The inverter resumes its start-
up routine.
Short-term interruption while
feeding energy into the grid
The inverter resumes its start-
up routine.
Short-term interruption while
feeding energy into the grid.
The inverter resumes with its
startup routine.
Behaviour
The inverter will automati-
cally attempt to connect
again and, if possible, will
resume feeding energy into
the grid
Remedy
*)
Purge cooling air open-
ings and heat sink; **)
**)
wait for sufficient level of
insolation;
**)
**)
*)
Remedy
*)