SMA SB 1100 - Manual (Page 30)

Commissioning the Sunny Boy SMA Solar Technology AG
30 SB11_12_17-IEN100132 Installation Guide
Disturbance or Fault
If the Sunny Boy detects a disturbance or fault, this event is indicated through a blink code of the
yellow and, where applicable, the red LEDs.
For example, if the yellow LED glows for 5 seconds immediately after connection, then goes out for
3 seconds and then flashes briefly twice, there is a grid fault. This can be due to the fact that either
the AC cable has not been connected correctly or the line circuit breaker has not yet been switched
on.
Explanation of the Blink Codes
For a detailed description of the blink codes, see the provided Sunny Boy user manual.