KACO blueplanet 1502x - Manual (Page 14)

Page 14 blueplanet Operating Instructions 1502x - 5002x
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 external DC/AC switch.
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.
external 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 gen-
erator 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 param-
eters 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, overtem-
perature, 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.
The inverter stops supplying
power to the grid shortly
after being switched on, even
though there is sufficient sun-
light.
Faulty grid separation relay in the
inverter.
Although there is sufficient 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 definitely receiving sufficient generator power, the grid separa-
tion relay is presumably faulty, thus preventing the inverter from connecting.
Please contact your solar installer.
Section 6 · Troubleshooting