Fancom FB.1 Notice page 10

The FB is equipped with eight LED indicator lights.
Symbol LED colour
Red
Green
Red
Red
Red
Red
Yellow
Yellow
If none of the LEDs is on continuously or flashing, then the signalling unit is not in operation. In this case,
check to see whether the signalling unit is connected correctly and whether the power supply / battery are
OK.
Way of lighting up Meaning
Flashes Signalling unit has been turned off or is in test
mode
Continuously on Signalling unit is in operation
Continuously off Signalling unit has no power supply or is not in
operation
Flashes Signalling unit is in battery-test mode
Continuously on Signalling situation
Continuously on Battery is malfunctioning
Continuously on One or more phases have been interrupted
(phase signalling)
Continuously on The audio or visual signal and the telephone
dialler output are temporarily inactive (+/- 15
min.). (After pressing the
Continuously on Telephone dialler output is inactive
Continuously on The audio or visual signal is inactive
Gndfp
reset button)
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