HP PowerTrust A3589A, Manual

Page: 137 / 257

Chapter 6 6-21
Troubleshooting
UPS Halted (Has No AC Output)
• The UPS output has been turned off with the Output On/Output Off
switch. For this cause, use Action 1 below to recover.
• The UPS output has been turned off by a command from the host
computer system and has not been commanded to turn back on. For this
cause, use Actions 2 and 3 below to recover.
Abnormal causes of this case are:
• Faulty UPS Output On/Output Off switch and related internal UPS
components. For this cause, use Actions 2 and 3 below to recover.
Action: 1. Verify that the Output On/Output Off switch is in the
Output Off
position.
If it is, set it to
Output On
. This should cause the UPS to return to normal
operation if all other conditions, such as, AC input voltage, load, and
UPS temperature, are normal.
2. If the Output On/Output Off switch is in the
Output On
position, the
following steps should be performed to recover the UPS output:
a. Set the UPS/Battery switch to
DISABLE
for one second, and then set it
back to
ENABLE
.
b. Set the Output On/Output Off switch to
Output Off
for one second, and
then set it back to
Output On
.
If the UPS returns to normal operation, that is, with the UPS
running on AC power, then it is either OK and must have entered
Automatic Bypass because the Bypass Switch Activation button was
pressed, or the UPS has an intermittent fault that occasionally puts
it in Automatic Bypass and then clears itself.
If the UPS stays in this condition—with the Service Bypass switch
in the
NORMAL
position and after toggling the Output On/Output Off
switch—it is defective.
3. If none of the steps above causes the UPS output to recover, the UPS is
defective.
Case 13 (Normal or Abnormal) — Deeply Discharged Batteries
or Non-Fatal UPS Failure
Indicators:
AC Output
lit
Battery Power
not lit
Attention
lit
Caution LED not lit
Enable lit
Audible Alarm: 1 beep every 10 seconds