HP T2200 - Manual (Page 38)

Troubleshooting 38
1. Save your work.
2. Power down the load devices connected to the UPS output receptacles.
3. Remove one or more load devices to reduce the power requirements.
4. Be sure the UPS configuration matches the utility voltage. Refer to "Selecting the UPS voltage
configuration (on page
19 )."
UPS frequently switches between utility and battery
power
Action:
1. Check the input voltage.
2. Change the power sensitivity adjustment dial (" Setting the power sensitivity adjustment dial " on page
30 ) setting.
3. Contact a qualified electrician to verify that the utility power is suitable for the UPS.
UPS does not provide the expected backup time
Action:
1. If the Output Load Level LED is red or flashing red, remove one or more load devices to reduce the
power requirements.
2. Power down the UPS (" Powering down the UPS " on page 31 ).
3. Verify that the batteries are connected.
4. Allow the UPS batteries to charge for 24 hours.
5. Initiate a self-test (" Initiating a self-test " on page 30 ).
6. 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 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:
a. Save your work, and power down the UPS (" Powering down the UPS " on page 31 ).
b. After the blackout or brownout is over, power up the UPS (" Powering up the UPS " on page 24 ).
c. Allow the UPS batteries to charge for 24 hours.
If the Battery Charge LED is also yellow or green: