Kaco Powador 3200 Operating instructions manual - 5 Troubleshooting
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Operating Instructions Powador 3200 / 4400 / 5300 / 5500 / 6600_EN
S e c t i o n 5 ·
T r o u b l e s h o o t i n g
5 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 PV array 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.
Fault
Cause of fault
Remedy/explanation
Inverter displays an
impossible daily peak
value.
Faults in the grid voltage.
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, the
inverter must be switched off and switched on again by discon-
necting it from the grid and switching off the DC.
Daily energy yields do
not correspond with the
yields on the energy
supply company’s
feed-in meter.
Tolerances of the measur-
ing elements in the inverter
The measuring elements on the inverter have been selected to
ensure maximum solar yields. Due to these tolerances, the daily
yields displayed on the inverter may deviate from the values on
your supply grid operator’s feed-in meter by up to 15%.
The display is blank and
the LEDs do not light up.
–
The unit is in night
shutdown mode.
–
There is no grid voltage.
–
The PV array voltage is
too low.
The inverter switches to night shutdown mode as soon as the
PV array voltage is below the minimum feed-in voltage for a
longer period of time. In this case, the display will also switch
off. In order to still be able to view the currently measured
values, you can switch on the inverter via the night start-up key.
A grid failure will also cause the display to go blank and feed-in
to stop. Wait until the public low-voltage grid is available again.
If the display does not light up during normal daytime hours,
please contact your solar installer.
The inverter is active but
does not feed into the
grid.
–
Insuffi cient generator
voltage available
–
The line voltage or the
PV array voltage is not
stable.
After sunrise, at sunset and when there is not enough solar
insolation due to bad weather conditions or due to the solar
modules being covered with snow, the generator voltage or the
generator power that comes from the roof may be too low to
be able to feed in.
Before the feed-in process begins, the inverter has to check the
line parameters for a certain period of time. The length of time
it takes to switch back on again differs by country according to
applicable standards and regulations and can take several min-
utes.
The inverter is active but
does not feed into the
grid. The insolation is
suffi cient.
The inverter has inter-
rupted the feed-in due to
a fault.
After a feed-in interruption due to a fault (line failure, overtem-
perature, overload, etc.), the inverter checks the line parame-
ters for a certain period of time. The length of time it takes to
switch back on again differs by country according to applicable
standards and regulations and can take several minutes.
Interruptions can occur during the day when the grids are
faulty. Notify your solar installer if the inverter shuts down reg-
ularly over a period of several weeks (more than 10 times per
day).
For an explanation of the individual display error texts, please
see the fault signals.