Troubleshooting 93
c.
Wait at least 5 seconds and restart the UPS.
d.
If the condition persists, verify that the load devices are not defective.
4.
Allow the UPS to cool:
a.
Power down the UPS. For more information, see "Powering down the UPS and battery packs (on
page
80
)."
b.
Clear vents and remove any heat sources.
c.
Verify that the airflow around the UPS is not restricted.
5.
Wait at least 5 minutes and restart the UPS.
6.
If the condition persists, contact an HP authorized service representative.
7.
If a battery fault occurs, replace the batteries.
UPS does not start
Action
:
Verify the following:
1.
The power cord is connected to a utility power receptacle.
2.
The power module is attached to the power unit and the manual bypass switch is in the normal position.
3.
The input voltage is within normal voltage range.
Wiring condition
Action
: Contact a qualified electrician to verify the following:
•
The line wires are not reversed in the wall outlet.
•
A neutral wire connection exists.
Utility power condition
Possible cause:
The input voltage is not 10 or -15 percent of nominal voltage.
The UPS is receiving utility power that might be unstable or in brownout conditions. The UPS continues to
supply power to the connected equipment. If conditions worsen, the UPS might switch to battery power.
Action:
1.
Check the input voltage and reconfigure the UPS using the UPS menu options (on page
73
).
2.
Contact a qualified electrician to verify that the utility power is suitable for the UPS.
Battery connection condition
Possible cause:
•
The power cable or signal cable is not connected.
•
The battery circuit breaker is not switched on.
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