Introducing the FTB-2/FTB-2 Pro and FTB-4 Pro
14 FTB-2/FTB-2 Pro and FTB-4 Pro
LED Indicators Description
(when unit is
connected to an
external power
source)
Green All batteries are fully charged.
Green, blinking At least one battery is charging.
Yellow, blinking The unit and its modules would be
using more power than what is
available from the batteries. Do not
disconnect AC power while this
module is in use.
A blinking yellow LED takes
precedence over a blinking green one,
so when AC power is connected, even
if the LED is blinking yellow, batteries
are probably charging (depending on
conditions).
Red Battery error. For more information,
see Solving Common Problems on
page 323.
Red, blinking The detected temperature is too high.
This could lead to a thermal shutdown
of the unit if no action is taken to
reduce the temperature.
Off
No battery present in the unit.
The batteries in the unit are not
charging. For more information,
see Solving Common Problems on
page 323.
LED Status Meaning
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