HP Tower Uninterruptible Power System - Manual (Page 56)

Troubleshooting 56
Input voltage is out of range
Action:
1. Check the input voltage and reconfigure the UPS (" Configuring the UPS " on page 40 ).
2. Contact a qualified electrician to verify that the utility power is suitable for the UPS.
Overtemperature condition
Possible cause: The UPS internal temperature is too high, or a fan has failed.
Action:
1. Power down the UPS (" Powering down the UPS " on page 42 ).
2. Allow the UPS to cool:
a. Clear vents and remove any heat sources.
b. Be sure that the that the airflow around the UPS is not restricted.
3. Wait at least 5 minutes, and then restart the UPS.
4. If the condition persists, contact an HP authorized service representative.
Internal UPS fault condition
Action:
1. Power down the UPS (" Powering down the UPS " on page 42 ).
2. If the condition persists, contact an HP authorized service representative.
REPO condition
Action:
• If the remote switch is closed, then open the switch to enable power to the output receptacles.
• If the condition occurred while reconnecting a disconnected REPO port, then verify the polarity of the
REPO connector pins.
For more information about REPO ports, see "Connecting the REPO port (on page 21 )."
Site wiring condition
Action: Contact a qualified electrician to be sure that:
• The utility power receptacle is grounded.
• There is a ground wire in the UPS power cord.
• The line and neutral wires are not reversed in the wall outlet.