Operation
3–6975-0055-01-01
Monitoring the Operating Status

The operating status of the TS400 is indicated by three lights on the front

panel and an audible alarm. See Table 3-2.

For an illustration of the indicator lights on the front panel, see “Front

Panel of the TS400” on page3–2.

If none of the front panel lights are on, see “Troubleshooting Reference ”

on page 4–2.

Table 3-2

Status of Indicator Lights and Alarm

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Inverter ON Green When the TS400 is on, the Inverter
ON light illuminates. You can run your equipment using
energy from the battery.
Low Battery &
Inverter ON
(with audible
alarm)
Yellow &
Green When the Low Battery and
Inverter ON lights illuminate, your
battery level is low. (The battery
voltage has dropped below 10.7
volts DC.)
You can run your equipment but your
battery level is low. Charge your
battery.
Low Battery
(with audible
alarm)
Yellow When only the Low Battery light
illuminates, your battery level is
critically low. (The battery voltage
has dropped below 10.3 volts DC.)
You cannot run equipment. Charge
your battery.
Fault Red The Fault light illuminates
whenever there is a battery over-
voltage fault condition (exceeds
15.3 volts), output overload fault
condition or over-temperature
fault condition.
You cannot run equipment as the AC
output is disabled. Clear the fault
condition. Reset the TS400 by
turning the On/Standby switch to
Standby () and then to On( ).