Ups Frequently Switches Between Utility And Battery Power; Ups Does Not Provide The Expected Backup Time; Ups Emits A Slight Clicking Noise; Power Led Flashes - HP T750 User Manual

UPS frequently switches between utility and battery power

Action:
Check the input voltage and reconfigure the UPS
1.
11).
Contact a qualified electrician to verify that the utility power is suitable for the UPS.
2.

UPS does not provide the expected backup time

Action:
If the Output Load Level LED is red or flashing red, remove one or more load devices to reduce the
1.
power requirements.
Power down the UPS
2.
Verify that the batteries are connected.
3.
Allow the UPS batteries to charge for 24 hours.
4.
Initiate a self-test
5.
During extended power outages, save your work, power down the load devices, and then power
6.
down the UPS

UPS emits a slight clicking noise

Action: The UPS is automatically correcting high or low AC voltage on the utility line. No action is
required.

Power LED flashes

Action:
If the Battery Charge LED is also red:
Save your work, and power down the UPS
a.
After the blackout or brownout is over, power up the UPS
b.
Allow the UPS batteries to charge for 24 hours.
c.
If the Battery Charge LED is also yellow or green:
Consider saving your work and powering down the UPS (on page 16). If the blackout or
a.
brownout is prolonged, the Battery Charge LED turns red as the UPS batteries near depletion.
After the blackout or brownout is over, power up the UPS
b.
Allow the UPS batteries to charge for 24 hours.
c.

Voltage Configuration LED is green

Action: The UPS is automatically correcting high or low AC voltage on the utility line. No action is
required.
("Powering down the
("Initiating a self-test" on page 16).
("Powering down the UPS" on page 16) to conserve battery power.
("Selecting the UPS voltage
UPS" on page 16).
("Powering down the
("Powering up the
("Powering up the
configuration" on page
UPS" on page 16).
UPS" on page 15).
UPS" on page 15).
Troubleshooting 21