Compaq 1000 Series Operation And Reference Manual page 42

3-6 Compaq 1000 Series UPS Operation and Reference Guide
AC Input (LEDs 1-4)
LED Color
1 Red The utility voltage is higher than the voltage range for which the
UPS has been configured. The UPS is supplying battery power.
The audio alarm will sound.
Flashing Red Utility voltage has returned to the voltage range for which the UPS
has been configured. The UPS is supplying utility power. The
audio alarm should be reset.
2 Green Utility voltage is within the voltage range for which the UPS has
been configured.
3 Green Utility voltage is lower than the current UPS configuration expects.
The UPS is compensating and providing power to the loads
without the use of batteries.
4 Red The utility voltage is lower than the voltage range for which the
UPS has been configured. The UPS is supplying battery power.
The audio alarm will sound.
Flashing Red Utility voltage has returned to the voltage range for which the UPS
has been configured. The UPS is supplying utility power. The
audio alarm should be reset.
Site Wiring Fault (LED 5)
LED Color
5 Red No ground connection between utility power and the UPS.
The line and neutral connections between utility power and the
UPS are reversed.
The UPS voltage configuration may be incorrect.
Note: For units factory-configured for 208V, the Site Wiring Fault function has been
disabled. If reconfiguring a 230V unit to operate at 208V, the Site Wiring Fault function
must be manually disabled. See the section "Changing Configuration Parameters" in
Chapter 4, "Configuration."
Table 3-1
AC Input LEDs
Meaning
Table 3-2
Site Wiring Fault LED
Meaning