Class 5 Status Codes - Fronius Primo 3.8-1 208-240 Instructions De Service

Code Description
474 RCMU sensor faulty
Solar module ground, insula-
475 tion error (connection between
solar module and ground)
Supply voltage for driver too
476
low
Intermediate circuit voltage re-
479
lay is switched off
Function incompatibility (one
or more PC boards in the in-
480,
verter are not compatible with
481
each other, e.g.,after PC board
replacement)
Commissioning is not com-
482
plete
Voltage U
DCfix
483
is outside of valid range
485 CAN transmission buffer is full
489 Permanent overvoltage on in-
termediate circuit capacitor
(five 479 status codes in a row)
Class 5 Status Class 5 status codes generally do not impair grid power feed operation, but can lead to lim-
Codes itations in grid power feed operation. They will be displayed until the status code is ac-
knowledged by pressing a key (the inverter, however, continues working normally in the
background).
Code Description
Insulation error on the solar
502
modules
No feed-in within the last 24
509
hours
515 No internal communication
with filter
516 Communication with memory
unit not possible
Details
Inverter does not feed energy
into the grid.
The inverter will automatically
attempt to connect again and,
if possible, will resume feeding
energy into the grid.
Inverter does not feed energy
into the grid.
Inverter does not feed energy
into the grid.
for MPP2 string Inverter does not feed energy
into the grid.
Inverter does not feed energy
into the grid.
The inverter is not feeding any
energy into the grid.
Details
Warning message is shown on
the display.
Warning message is shown on
the display.
Warning message on the dis-
play
Warning message of memory
unit
Rectification
If this status code keeps recur-
ring, contact your system in-
staller.
If status code persists: contact
a Fronius-trained service tech-
nician.
Update inverter firmware; If
status code persists: contact a
Fronius-trained service techni-
cian.
Reset AC (switch automatic
circuit breaker on and off), car-
ry out full commissioning.
Check MPP settings;
If status code persists:
contact a Fronius-trained ser-
vice technician.
Perform AC reset (switch auto-
matic circuit breaker off and on
again);
If status code persists:
contact a Fronius-trained ser-
vice technician.
If status code persists: contact
a Fronius-trained service tech-
nician.
Rectification
If this status code keeps recur-
ring, contact your system in-
staller.
Acknowledge status code;
check if all conditions for fault-
free grid power feed operation
are fulfilled (e.g., if the solar
modules are covered with
snow).
If the status code persists: ob-
serve further status codes.
If status code persists: Contact
a Fronius-trained service tech-
nician
47