Troubleshooting 45
1.
Be sure that the power cord is plugged in to a utility power receptacle.
2.
Check the power source at the utility power receptacle.
Low battery shutdowns
Ungraceful shutdown of attached servers occurs when the UPS is in a low battery condition.
Action
:
1.
Verify that the power management software is not delaying the shutdown of attached servers when
the UPS is in a low battery condition.
2.
Allow the UPS batteries to charge for 24 hours.
3.
If the Battery Fault LED is red, replace the batteries ("
UPS battery replacement procedure
" on page
36
).
UPS does not provide the expected backup time
Action:
1.
If the Overload LED ("
UPS front panel controls
" on page
7
) is illuminated, remove one or more load
devices to reduce the power requirements.
2.
Power down the UPS ("
Powering down the UPS
" on page
31
).
3.
Allow the UPS batteries to charge for 24 hours.
4.
Initiate a self-test ("
Initiating a self-test
" on page
30
).
5.
During extended power outages, save your work, power down the load devices, and then power
down the UPS ("
Powering down the UPS
" on page
31
) to conserve battery power.
UPS frequently switches between utility and battery
power
Action
:
1.
Check the input voltage and reconfigure the UPS ("
Configuring the UPS
" on page
28
).
2.
Contact a qualified electrician to verify that the utility power is suitable for the UPS.
ERM cannot be configured from the UPS front panel
Action:
See the HP website (
http://www.hp.com/go/rackandpower
) to update the UPS firmware.
