141
g
550
Jumper set incorrectly
Description The jumper on the C-Box PC board was not reset to the ‘SMon’
position after the solar module strings were checked
Remedy Set the jumper on the C-Box PC board to the ‘SMon’ position
551
Fuse for solar module ground is defective
Description The fuse for the solar module ground is defective, replace the
fuse to protect the solar module.
Remedy Insert new fuse for the solar module ground so that the solar
modules are grounded at the negative or positive pole.
Fault is rectified automatically
If this status code keeps recurring, contact your system installer
553
Phase master deactivated due to frequently occurring errors
Description A reintegration of the power stage set into the Mix network will
be attempted at a later time.
Remedy If status code persists: Contact a Fronius-trained service tech-
nician
558
Feature deactivated (e.g., inverter control via the Fronius Power Control Box option)
Description A feature had to be deactivated (e.g., after component replace-
ment).
The status code is no longer displayed after the next DC discon-
nect.
Remedy Confirm error, update firmware using Bootloader or Fronius So-
lar.update/IG Plus, if required
(The inverter will also operate problem-free without updating the
firmware)
559
"Low Voltage Ride Through" event
Description Grid voltage parameters outside of the limits have caused a grid
voltage gap. The inverter attempts to bridge the grid voltage
gap.
Remedy Fault is corrected automatically when grid parameters return to
normal
If this status code keeps recurring, contact your system installer
560
Power reduction due to over-frequency
Description The inverter reduces output power due to excessive grid fre-
quency in order to stabilize the grid.
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