5. Maintenance
5.1 Troubleshooting
Operation status Possible cause Action
Overload
Power requirement exceeds the UPS
capacity (greater than 105% of nominal).
Remove some of the equipment from
the UPS. The UPS continues to operate,
but may shutdown if the load increases.
The alarm resets when the condition
becomes inactive.
Short-circuit fault A short-circuit occurred. Check device connection or
integrity.
If the error persists, note the alarm
message and the UPS serial number, and
then contact your service representative.
Battery fault The batteries in the UPS are
disconnected.
Verify that all batteries are properly
connected.
If the error persists, note the alarm
message and the UPS serial number, and
then contact your service representative.
The end of battery life is reached. Contact your service representative
for battery replacement.
Fan fault The UPS has a fan fault. Check that no object is blocking the
fan.
If the error persists, note the alarm
message and the UPS serial number, and
then contact your service representative.
Charger fault The UPS has a charger fault. The UPS does not charge the
battery anymore.
Note the alarm message and
the UPS serial number, and then
contact your service representative.
5.2 Updating the UPS rmware
To update the UPS rmware, see the HP website (http://www.hp.com/go/rackandpower).
5.3 Battery module replacement
Safety recommendations
Warning: To prevent personal injury from hazardous energy:
• This operation must be performed when the UPS is switched o and unplugged from the AC source.
• Do not disconnect the connector while the unit is operating from the AC mains or in reserve mode.
• The battery connection must not be disconnected while running in reserve mode.
• The battery can cause electrocution and high short-circuit currents. The following safety precautions
are required before servicing the battery components:
• Remove watches, rings, bracelets, and all other metal objects from the hands and arms.
• Use tools with an insulated handle.
• Do not place tools or metal parts on top of batteries.
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