Fronius String Control 250/25 DCD DF - Manual (Page 87)

29
EN-US
Restoring the
energy supply
manually
(continued)
In this case, shine a flashlight into the LED and then cover it to
darken it, for example.
- When the power supply is reestablished the ‘PWROK’ LED lights up
green.
If there is no short circuit and the ‘PWROK’ LED does not light, then the
shutdown is due to under-voltage.
In this case, the DATCOM components require an external energy supply
via an external power supply unit.