Troubleshooting - Kaco Powador 2002 Operating Instructions Manual

S e ctio n 5 · Trouble shooti ng

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 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
Inverter displays an
impossible daily peak
value.
Daily energy yields do
not correspond with
the yields on the energy
supply company's grid
feed counter.
The display is blank and
the LEDs do not light up.
The inverter is active but
does not feed into the
grid.
The inverter is active but
does not feed into the
grid. The insolation is
suffi cient.
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Cause of error
Faults in the line voltage.
Tolerances of the
measuring elements in
the inverter.
–
The unit is in night
shutdown mode.
–
There is no line voltage.
–
The solar generator
voltage is too low.
–
Insuffi cient generator
voltage available.
–
The line voltage or the
solar generator voltage
is not stable.
The inverter has
interrupted the
grid-feed due to a fault.
Remedy/Explanation
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.
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 grid-feed counter by up to 15 %.
The inverter switches to night shutdown mode as soon as the
solar generator voltage is below the minimum grid-feed volt-
age 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
time start switch.
A grid failure will also cause the display to go blank and the
grid-feed to stop. Wait until the public low-voltage grid is avail-
able again.
If the display does not light up during normal daytime hours,
please contact your solar installer.
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 grid-feed 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 accord-
ing to applicable standards and regulations and can take sev-
eral minutes.
After an interruption of the grid-feed due to a fault (line fail-
ure, overtemperature, overload, etc.), the inverter checks 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
minutes.
Interruptions can occur during the day when the grids are faulty.
Notify your solar installer if the inverter shuts down regularly
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.
Operating Instructions Powador 2002 / 3002 / 4202 / 5002 / 6002_EN