SMA SB 2800i - Manual (Page 15)

Operating Instructions Device Description
SB2800i-11:FE0504 SMA Regelsysteme GmbH 13
3.3.3 Uncritical Failure States
All other signaling codes show uncritical operating states. These
normally do not mean any high danger of people or device, but
their cause must be found and removed immediately in order to
avoid yield losses.
Despite all the necessary precaution it is possible that there are
additional faults which can not be signaled (e. g. failure of the
status display). To be able to detect such failures as well, the
operator should check the display of normal operating states for
plausibility based on the explanations given in chapter 3.3.4
„ Description of Operating States” (page 14). For example if the
green LED is on in the middle of the night, this means as much a
failure as if no LED is on in full sunlight.
You can diagnose the states in much more detail with one of the
communication interfaces described in chapter 5 „ Upgrading
your Sunny Boy” (page 29).