4 Product Overview
SMA Solar Technology AG
Operating manual STPxx-US-50-BE-en-11 29
LED signal Explanation
The blue LED is flashing slowly (2s on and 2s
off)
Communication connection is being established.
The product is establishing a connection with a
local network or is establishing a direct connec-
tion to a smart device (e.g., smartphone, tablet
or laptop).
The blue LED is flashing fast (0.25s on and
0.25s off)
A System Manager is requesting identification of
the product.
The blue LED is glowing There is an active connection with a local net-
work or there is a direct connection with a smart
device (e.g., smartphone, tablet or laptop).
Blue LED is off There is no active connection.
All 3 LEDs are on Product update or booting procedure.
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