HP Tower Uninterruptible Power System User Manual
Page 35
TROUBLESHOOTING
HP T750 G2, HP T750J, HP T1000 G3, HP T1000J, HP T1500 G3, and HP T1500J UPS Models User Guide
S 505922-002
28
Table 10
Troubleshooting Guide
Alarm or Condition
Possible Cause
Action
The indicator is not on; the UPS
does not start.
The power cord is not
connected correctly.
Check the power cord connections.
The UPS is in Standby mode.
Press and hold the (On/Off) button until you hear the UPS
beep to supply power to the connected equipment.
The wall outlet is faulty.
Have a qualified electrician test and repair the outlet.
The UPS operates in Battery mode only,
even though normal utility power is
present.
The input overcurrent protector
is open (100–120V models
only).
Save your work and turn off your equipment. Turn off the UPS.
Reduce the load, then press the input overcurrent protector on
the UPS rear panel.
The UPS does not provide the expected
backup time.
The batteries need charging or
service.
Plug the UPS into a power outlet for 24 hours to charge the
battery. Press the (Test/Alarm Reset) button. If the UPS
beeps, see “Replacing Batteries” on page 20 to replace the
battery.
During an extended power outage, save your work and turn
off your equipment to conserve battery power.
Normal operation.
None. The UPS is operating in Normal mode and
automatically provides consistent voltage with the Buck and
Boost feature.
1 beep every 4 seconds.
The UPS is on battery due to a
utility failure.
The UPS is powering your equipment with battery power.
Prepare your equipment for shutdown. During an extended
power outage, save your work and turn off your equipment to
conserve battery power.
1 beep every 2 seconds.
The battery is running low.
Two minutes or less of battery power remains depending on
load configuration and battery charge.
Save your work and turn off your equipment. The alarm
cannot be silenced.
1 beep every 4 seconds.
The UPS is running on battery
power because the input
voltage is too high or too low.
Correct the input voltage, if possible. The UPS continues to
operate on battery until the condition is corrected or the
battery is completely discharged.
If the condition persists, the input voltage in your area may
differ from the UPS nominal. Change the UPS input voltage to
match your local voltage (see “Voltage Configuration” on
page 13).
1 beep per second.
Power requirements exceed UPS
capacity (overload is greater
than 120%) or the load is
defective.
The UPS will automatically shut down in 3 minutes. Save your
work immediately and turn off your equipment. Turn off the
UPS.
Remove some of the equipment from the UPS. You may need
to obtain a larger capacity UPS.
1 beep per second.
The UPS is on battery, and the
power requirements exceed UPS
capacity (overload is greater
than 120%) or the load is
defective.
Shutdown is imminent (30 seconds). Save your work and turn
off your equipment. Turn off and unplug the UPS.
Remove some of the equipment from the UPS. Wait at least
5 seconds until all LEDs are off, and then restart the UPS. You
may need to obtain a larger capacity UPS.
Continuous beep.
Battery test failed.
Check the battery connections and be sure the battery is fully
charged.
If the (Service) indicator still flashes, see “Replacing
Batteries” on page 20. Call your service representative if the
problem persists.