KACO blueplanet 1502xi - Manual (Page 14)

Page 11 11 31000770-02-112609 blueplanet Operating and Installation Instructions 1502xi - 5002xi
6 Troubleshooting
In line with our continuously expanding quality assurance system, we endeavor 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 behavior and the protective equipment.
If your photovoltaic installation does not function properly despite these measures, we suggest the following troubleshooting
procedures:
The first step is to monitor the inverter closely and, where applicable, make a note of the displays and LEDs. The next step is to contact
your installer and explain the problem encountered.
The following faults may occur and should be remedied as described.
Error Cause of error Troubleshooting/Explanation
Inverter displays an
impossible daily peak
value. Faults in the line 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 using
the DC/AC switch in the connection box.
Daily energy yields do
not correspond with
the yields on the energy
supply company’s grid-
feed counter. Tolerances of the
measuring elements in the
inverter. The measuring sensors of 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%, especially if operating at very low power for extended
periods of time. (see section 4.9)
The display is blank and
the LEDs are not lighting
up. – The unit is in night
shutdown mode.
– There is no AC line
voltage.
– The solar generator
voltage is too low.
– DC/AC switch is OFF (0).
The inverter switches to night shutdown mode as soon as the
solar generator voltage is below the minimum grid-feed 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 the grid-
feed to stop. Wait until the public utility grid is available again.
Also check to see if the DC/AC switch is OFF (0) and if so, switch
it to ON (1).
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. – Insufficient generator
voltage available.
– The line voltage or the
solar generator 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 grid-feed process begins, the inverter has to check
the line parameters for a certain period of time. The length of
the switch-on time differs by country according to applicable
standards and regulations and can take several minutes.
The inverter is active but
does not feed into the
grid. The insolation is
sufficient. The inverter has
interrupted the grid-feed
due to a fault. After an interruption of the grid-feed due to a fault (line failure,
overtemperature, overload, etc.), the inverter checks the line
parameters for 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.
With faulty grids, interruptions can occur during the day. 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.
Section 6 · Troubleshooting