AVISO
In case of power failure, wait for the system to automatically restart. Notify your electrician if there is an
extended power failure.
11.8.2
Rectifying a fault
Fault
Possible cause
Explanation/remedy
By
The display is blank and
the LEDs do not light up
Grid voltage not availa-
ble
› Check whether the DC and AC voltages are within the permit-
ted limits (see Technical Data)
E
› Notify KACO Service.
E
The device stops feeding
into the grid shortly af-
ter being switched on,
even though there is
sunlight present.
Faulty grid separation
relay in the device.
If the grid separation relay is defective, the device will recogni-
se this error during the self-test.
K
› Ensure that there is sufficient PV generator power.
› If the grid separation relay is defective, have it replaced by
KACO Service.
› Notify KACO Service.
E
Device is active but is
not feeding into the grid.
The display indicates a
grid failure.
Grid-feed is interrupted
due to a grid fault.
Due to a grid fault (over/undervoltage, over/underfrequency),
the device stopped the feed-in process and disconnected from
the grid for safety reasons.
› Change the grid parameters within the permitted operating li-
mits (see the "Start-Up" section).
E
The grid fuse trips.
The grid fuse capacity 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 genera-
tor.
Select the capacity of the device’s backup fuse to be somewhat
higher than the maximum feed-in current (see the "Installa-
tion" section).
E
› Contact the grid operator if the grid failure continues to oc-
cur.
E
The grid fuse trips.
Hardware damage on
the device.
If the grid fuse trips immediately when the device goes into fe-
ed-in mode (after the start-up period is complete), the device’s
hardware is probably damaged.
› Contact KACO Service to test the hardware.
E
The device is displaying
an impossible daily peak
value.
Faults in the grid.
The device continues to operate as normal without losses to
the yield, even when an erroneous daily peak value is displa-
yed. The value is reset overnight.
To reset the value immediately, switch the device off by dis-
connecting it from the grid and switching off the DC, then
switch it back on.
E
Daily yields do not co-
rrespond to the yields
on the feed-in meter.
Tolerances of the mea-
suring elements in the
device.
The measuring elements of the device 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%.
E
› No action.
Device is active but is
not feeding into the grid.
Display: "Waiting for fe-
ed-in"
Generator voltage too
low; grid voltage or PV
generator voltage unsta-
ble.
The PV generator voltage or power is not sufficient for feed-in
(solar radiation is too low). The inverter checks the grid para-
meters before the feed-in process begins. The length of time it
takes to switch back on again differs from country to country,
depending on applicable standards and regulations, and may
be several minutes. The starting voltage may have been set in-
correctly.
› Adjust starting voltage in the Parameter menu.
E
Kaco blueplanet 29.0TL3
Página 79
ES
