Class 4 Status Codes - Fronius Primo 3.8-1 208-240 Instructions De Service

Code Description
LOW PV POWER
Intermediate circuit voltage
306 has dropped below permissible
threshold value for grid power
feed operation.
LOW PV VOLTAGE
DC input voltage has dropped
307 below permissible threshold
value for grid power feed oper-
ation.
IMPORTANT! Status codes 306 (LOW PV POWER) and 307 (LOW PV VOLTAGE) appear naturally every
morning and evening due to low solar irradiance. These status codes are not the result of a fault.
308 Intermediate circuit overvolt-
age
DC input voltage for MPPT 1
309
too high
313 DC input voltage for MPPT 2
too high
Class 4 Status Class 4 status codes may require the intervention of a trained Fronius service technician.
Codes
Code Description
Unable to communicate with
401
the power stage set
Power stage set temperature
406
sensor defective
Internal temperature sensor
407
defective
Direct current feeding in de-
408
tected
The "fixed voltage" setting has
been selected instead of MPP
412 voltage operation and the volt-
age is set to a value that is too
low or too high.
Safety cut-out has been trig-
415 gered by option card or RE-
CERBO
No communication between
416 power stage set and control
unit
417 ID problem with hardware
419 Unique ID conflict
421 HID range error
Unable to communicate with
425
the power stage set
426 -
Possible hardware defect
428
Details
Brief interruption of grid power
feed operation.
The inverter returns to the
Startup phase.
Brief interruption of grid power
feed operation.
The inverter returns to the
Startup phase.
Details
The inverter will automatically
attempt to connect again and,
if possible, resume grid power
feed operation.
-
Inverter does not feed energy
into the grid.
The inverter will automatically
attempt to connect again and,
if possible, resume grid power
feed operation.
Rectification
The fault is rectified automati-
cally.
If this status code keeps recur-
ring with sufficient solar irradi-
ance, contact your system
installer.
Error is automatically rectified;
if status code persists: contact
a Fronius-trained service tech-
nician.
Rectification
If status code persists: contact
a Fronius-trained service tech-
nician.
If this status code keeps recur-
ring, contact your system in-
staller.
If status code persists: contact
a Fronius-trained service tech-
nician.
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