HP T1500 HP R/T2200 UPS User Guide - Page 37

Troubleshooting, UPS does not start, UPS does not communicate with the host computer

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Troubleshooting UPS does not start Action: 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. 3. Allow the UPS batteries to charge for 24 hours. UPS does not communicate with the host computer Action: Be sure the USB communications port was disconnected before updating the UPS firmware (on page 33). CAUTION: Using a USB to serial converter cable will damage the UPS. UPS firmware updating process is interrupted The serial communications port is disconnected while updating the UPS firmware (on page 33). Action: Restart the update. Audible alarm sounds Action: 1. Identify the red LED associated with the audible alarm. 2. Check the troubleshooting information in this document to determine the cause of the alarm. Circuit breaker trips Action: Remove some of the load, and then press the circuit breaker to reset the load. UPS operates on battery only Action: Troubleshooting 37

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Troubleshooting 37
Troubleshooting
UPS does not start
Action:
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.
3.
Allow the UPS batteries to charge for 24 hours.
UPS does not communicate with the host computer
Action:
Be sure the USB communications port was disconnected before updating the UPS firmware (on page
33
).
CAUTION:
Using a USB to serial converter cable will damage the UPS.
UPS firmware updating process is interrupted
The serial communications port is disconnected while updating the UPS firmware (on page
33
).
Action:
Restart the update.
Audible alarm sounds
Action
:
1.
Identify the red LED associated with the audible alarm.
2.
Check the troubleshooting information in this document to determine the cause of the alarm.
Circuit breaker trips
Action:
Remove some of the load, and then press the circuit breaker to reset the load.
UPS operates on battery only
Action: