Kaco Powador 2002 Operating Instructions Manual - 9 Troubleshooting
Installation Instructions Powador 2002 / 3002 / 4202 / 5002 / 6002_EN
Page 29
9 Troubleshooting
In line with our continuously expanding quality assurance system, we endeavour to eliminate all errors and faults. You have purchased
a product which left our factory in proper condition. Each individual unit has successfully passed an endurance test as well as extensive
tests for the purpose of assessing the operating behaviour and the protective equipment.
If your photovoltaic system does not function properly despite these measures, we suggest the following troubleshooting procedures:
The fi rst step is to check that the solar generator and grid connections are properly connected to the Powador. In doing so, observe all
the safety instructions specifi ed in this manual. Monitor the inverter closely and, where applicable, make a note of the displays and LEDs.
The following faults may occur and should be remedied as described.
Error
Cause of error
Remedy/Explanation
The display is blank and
the LEDs do not light up.
–
There is no line voltage.
–
The solar generator voltage
is too low.
The inverter switches to night shutdown mode as soon as the solar gen-
erator voltage is below the minimum grid-feed voltage for a longer period
of time. For this reason, check fi rst to see if the solar generator voltage is
suffi ciently high. The inverter switches to stand-by mode at approximately
80 % of the minimum grid-feed voltage.
Also check the AC voltage. The permissible voltage ranges for the grid-feed
can be found in the technical data.
If the display continues to remain blank, please contact KACO new energy
GmbH service.
The inverter stops
supplying power to the
grid shortly after being
switched on, even though
there is suffi cient sunlight.
Faulty grid separation relay
in the inverter.
Although there is suffi cient sunlight, the inverter feeds into the grid only for
a few seconds before switching off again. During the short grid-feed period,
the inverter shows that the power being fed into the grid is between 0 and
5 W. If the inverter is defi nitely receiving suffi cient generator power, the grid
separation relay is presumably faulty, thus preventing the inverter from con-
necting.
Please contact KACO new energy GmbH service.
The inverter is active but
does not feed into the grid.
The display indicates a line
failure.
The inverter has interrupted the
grid-feed due to a line failure.
Due to a line failure (line impedance too high, over/undervoltage, over/
underfrequency), the inverter stopped the grid-feed and disconnected
from the low-voltage grid for safety reasons. Many grid parameters can be
changed within the permissible operating limits. More information can be
found in the section “Starting up the inverter”.
If the line failure exists for a long time, please contact the grid operator.
The line fuse trips.
The line fuse capacity is too
low.
In cases of high insolation, the inverter can – depending on the solar gen-
erator – exceed its rated current for a short period. For this reason, the
capacity of the inverter’s pre-fuse should be somewhat higher than the
maximum grid-feed current. You can fi nd a dimensioning of the line fuse in
the section “Installation and Start-Up”.
The line fuse trips.
Damage to the inverter’s hard-
ware.
If the line fuse immediately trips when the inverter switches to grid-feed
mode (after the start-up period is complete), the inverter’s hardware is prob-
ably damaged.
Please contact KACO new energy GmbH service.
Table 9.1:
Reasons for faults
S e c t i o n 9 ·
T r o u b l e s h o o t i n g