Eaton RT 1250VA User Manual page 16

5.1.2 The description of LED display lamp functions
Warning red LED is on: UPS is fault and has no output. For example: Overload
beyond the allowed time, inverter fault, BUS fault, over temperature fault etc.
Bypass yellow LED is on: UPS is alarming. For example: Bypass mode supply
power and etc.
Battery yellow LED is on: UPS is alarming. For example: Battery mode supply
power and etc.
Inverter green LED is on: UPS is normally powered by mains or ECO mode or
battery mode.
After starting the UPS, the four LEDs will light and go out one-by-one. It
circulates several times until starting the UPS successful.
NOTE: As to the LED indication in different modes, please refer to
the LED lamps/display panel and warning table.
5.1.3 LCD display functions
When UPS is tower-mounted, the LCD displays as following Fig A. Press
and hold the ROTATE key for more than 1 second, the display will begin
to rotate which matches with the rack-mounted configuration. LCD
displays as following Fig.B.
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