KACO XP10U-H4 - Manual (Page 43)

M a i n t e n a n c e / T r o u b l e s h o o t i n g
Installation Instructions blueplanet XP10U H4 / H6 and XP10U H4 / H6 PSD Page 43
Fault Cause of fault Explanation/remedy By
The inverter is
active but does
not feed into the
grid. The display
indicates a line
failure.
Grid-feed is
interrupted due
to a grid fault.
Due to a grid fault (grid impedance too high, over/undervolt-
age, over/underfrequency), the inverter stopped the grid-feed
and disconnected from the grid for safety reasons.
 Change the line parameters within the permitted operat-
ing limits (see the “Start-Up” section).
E
The line
fuse trips. The line fuse
capacity is
too low.
In cases of high irradiance, the inverter exceeds its rated
current for a short period, depending on the PV array.
 Select the capacity of the inverter’s pre-fuse to be
somewhat higher than the maximum feed-in current
(see the “Installation” section).
E
 Contact the grid operator if the grid failure constantly
occurs.
E
Damage to
the inverter’s
hardware.
If the line fuse immediately trips when the inverter goes into
feed-in mode (after the start-up period is complete), the invert-
er’s hardware is probably damaged.
 Contact KACO Service to test the hardware. E
The inverter
displays an
impossible 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
displayed. The value is reset overnight.
 To immediately reset the value, switch the inverter off and
on again by disconnecting it from the grid and switching
off the DC.
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 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 does
not feed into the
grid. Display:
“Waiting for
feed-in” • Array voltage
too low
• Grid voltage
or PV array
voltage
unstable.
• The PV array voltage or power is not suffi cient for feed-in
(solar irradiance is too low).
• The inverter checks the line parameters before the feed-in
process begins. The length of the switch-on time diff ers by
country according to applicable standards and regulations
and can take several minutes.
• The starting voltage may have been set incorrectly.
 Adjust starting voltage in the Parameter menu if required. E
Table 5: Troubleshooting
O = Action of the operator
E = The indicated work must only be carried out by an authorised electrician.
K = The indicated work must only be carried out by a service employee of KACO new energy, Inc.