8 Commissioning
SMA Solar Technology AG
Operating manual
SB55-LV-JP-41-BE-en-13
40
2. Turn the DC load-break switch of the inverter to
position
I
.
☑ All three LEDs light up. The start-up phase begins.
☑ During start-up phase of the inverter, the desired firmware is being installed.
☑ All three LEDs go out again after approximately 90 seconds.
☑ The green LED starts to flash and, if the inverter is connected via Speedwire, the blue LED
also starts to flash. Feed-in operation is stopped. The inverter will only feed-in once the
operating state in the installation assistant is set to "MPP".
3. If th red LED is glowing, an error has occurred that must be rectified (see Section 12,
