2 led displays, 3 keys “1” and “2, Important – KACO blueplanet 1502xi User Manual
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31000770-02-112609 blueplanet Operating and Installation Instructions 1502xi - 5002xi
4.2 LED displays
The inverter is equipped with three LEDs that give information 
about the various operating statuses as follows:
1
2
3
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Figure 4.2: LED displays
LED (1) (green):
The LED begins to light up when the minimum voltage from a 
photovoltaic array is present and goes out again if the array 
voltage is lower than the minimum operating voltage. The LED 
signals that the inverter is in stand-by mode. If it is illuminated 
the inverter is ready for operation or is currently operating.
LED (2) (green):
The LED is lit when the inverter is feeding into the grid.
LED (3) (red):
The LED indicates that the grid-feed was stopped due to a 
fault.
Wait approx. 10 mins. to see if the fault is temporary. If this is 
not the case, notify your authorized electrician.
IMPORTANT
If there is a power failure on the public grid, LED (3) does 
not light up. If this happens, all LEDs and the display go out. 
The inverter is shut down completely.
The inverter can only resume its normal operation when the 
public utility grid is available again.
Check whether the fault in question relates to a general power 
failure or whether the circuit breaker between the utility service 
and the inverter has tripped. If the circuit breaker has tripped, 
notify your authorized technician. If there was a power failure, 
simply wait until the fault has been cleared. The system 
automatically re-starts. 
4.3 Keys “1” and “2”
Figure 4.3: blueplanet control keys
Key “1” is used to switch between the various displays for 
measured values and data. You use key “2” to configure 
settings. Here, menu navigation is divided into two levels. 
In level 1 (display mode), measured values such as the solar 
generator voltage can be read. Here, only key “1” is activated. 
In level 2 (configuration mode), key “1” is used to navigate 
through the individual displays and settings.
ACTION
By pressing key “1” you can choose which measured value 
is to be displayed. 
The menus are continuous, which means that when you arrive 
at the last entry in a menu, the first entry is displayed again 
the next time key “1” is pressed (see Figure 4.4).
Section 4 ·
Operation