Maintenance/Troubleshooting
Operating Instructions KACO blueplanet 29.0TL3
Page 55
EN
Fault
Possible cause
Explanation/remedy
By
The grid fuse
trips.
The grid fuse capac-
ity is too low.
In case of a high level of solar radiation, the inverter exceeds
its rated current for a short period, depending on the PV gen-
erator.
"
Select the capacity of the inverter’s backup fuse to be
somewhat higher than the maximum feed-in current (see
the “Installation” section).
E
"
Contact the grid operator if the grid failure continues to
occur.
E
Damage to the
inverter’s hardware.
If the grid fuse trips immediately when the inverter goes
into feed-in mode (after the start-up period is complete), the
inverter’s hardware is probably damaged.
"
Contact KACO Service to test the hardware.
E
The inverter dis-
plays an impos-
sible daily peak
value.
Faults in the grid.
The inverter continues to operate as normal without losses to
the yield, even when an erroneous daily peak value is dis-
played. The value is reset overnight.
"
To reset the value immediately, switch the inverter off by
disconnecting it from the grid and switching off the DC,
then switch it back on.
E
Daily yields do
not correspond to
the yields on the
feed-in meter.
Tolerances of the
measuring elements
in the inverter.
The measuring elements of the inverter have been selected
to ensure maximum yields. Due to these tolerances, the daily
yields shown may deviate from the values on the feed-in meter
by up to 15%.
"
No action
-
The inverter is
active but is not
feeding into the
grid. Display
“Waiting for
feed-in”
•
Generator voltage
too low
•
Grid voltage or PV
generator voltage
unstable.
•
The PV generator voltage or power is not sufficient for
feed-in (solar radiation is too low).
•
The inverter checks the grid parameters before the feed-in
process begins. The length of time it takes to switch back on
again differs from country to country, depending on applica-
ble standards and regulations, and may be several minutes.
•
The starting voltage may have been set incorrectly.
"
Adjust starting voltage in the Parameter menu if required.
K
Table 7:
Troubleshooting
