106
Class 5 status
codes
Class 5 status codes generally do not impair feed-in mode, but can lead to limitations in
feed-in mode. They will be displayed until the status code is acknowledged by pressing a
key (the inverter, however, continues working normally in the background).
Description Inverter does not feed energy into the grid.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician.
463
AC polarity inverted (L/N)
Description Inverter does not feed energy into the grid.
Remedy Check AC polarity (L/N)
If status code persists: Contact a Fronius-trained service tech-
nician.
474
RCMU sensor is defective
Description Inverter does not feed energy into the grid.
Remedy Contact a Fronius-trained service technician.
475
Error in safety relay
Description Inverter does not feed energy into the grid.
Remedy Contact a Fronius-trained service technician.
476
Internal component defective
Description Inverter does not feed energy into the grid.
Remedy Contact a Fronius-trained service technician.
509
No feed-in within the last 24 hours
Description Warning message is shown on the display
Remedy Check whether all conditions for problem-free feed-in mode are
met.
If status code persists: Contact a Fronius-trained service tech-
nician.
515
Communication with solar module string monitoring not possible
Description Warning message for solar module string monitoring
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