HP UPS Extended Runtime Module - Manual (Page 45)

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.