SMA 20000TL Service Manual - Manual (Page 36)

10. Switch on the circuit breaker of all three line conductors.
☑ All three LEDs start to glow and the start-up phase begins. The start-up phase may take several
minutes.
☑ The green LED is glowing. Feed-in operation begins.
✖ The green LED is flashing?
Possible cause of error: the DC input voltage is still too low or the inverter is monitoring the
utility grid.
• Once the DC input voltage is sufficiently high and the grid connection conditions are met,
the inverter will start operation.
✖ The red LED is glowing and an error message and event number appear in the display?
• Eliminate the error (see Section 5 "Troubleshooting", page 12).
11 Recommissioning the Inverter SMA Solar Technology AG
Service Manual for Installers STP20-25TL-SG-en-11 36