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Troubleshooting
Table 5-1: Main Module and Electronics Modules M1-M4 Active Alarms
LCD Display
X Alarms
Output Overload
X Alarms
Program
Checksum Fail
X Alarms
Rectifier Input
Over Current
X Alarms
Remote
Emergency Power
Off
X Alarms
Software
Incompatibility
Detected
X Alarms
UPS On Battery
X Alarms
UPS On Bypass
X Alarms
Utility Fail
X Alarms
Utility Not Present
5-8
Cause of alarm
The current load exceeds 100% of the
maximum capacity available that this
UPS will support in Non-redundant
mode. The UPS issues an alarm, but
does not take any other action for this
level of overload.
The UPS detects that the Module Flash
Program Space is corrupt. This is
usually caused by a Flash Upgrade
Failure.
At least one electronics module
generates this alarm when it detects an
abnormally high input current. The
detecting module shuts down to protect
itself from damage. The UPS may have
transitioned into Automatic Bypass
mode due to the failure, depending on
the load levels present at the time of
the failure and the number of modules
affected.
This could be caused by a hardware
failure.
The UPS detects a Remote Emergency
Power Off signal. The electronics
modules immediately shut down and
battery starts are inhibited.
At least one electronics module failed
the code validation check. The code
revision currently installed is
incompatible with the rest of the
system.
This is an alarm and a status to
indicate that the UPS is currently
operating in Battery mode.
This is an alarm and a status to
indicate that the UPS is currently
operating in Bypass mode.
The UPS detects that the utility source
voltage is not within an acceptable
range.
The UPS detects that the utility source
voltage is either not present, or so
abnormally low that the UPS classifies
it as not being present.
Action to take
Reduce the load level to clear the
alarm. If the alarm persists after load
reduction, see the LCD panel to
determine which electronics module is
reporting overload.
Contact Technical Support for
assistance.
This only occurs during product
upgrade.
Re-flash the failing electronics module
with the latest upgrade package.
Contact Technical Support for
assistance.
Refer to the section, "Remote
Emergency Power Off Port," in
Chapter 1 for more information.
Contact Technical Support for
assistance.
This is a normal operation. This alarm
may be accompanied by other alarms
that will indicate the root cause of the
problem.
This alarm may be accompanied by
other alarms that will indicate the root
cause of the problem.
Verify the utility power. If the problem
persists, contact an electrician.
Verify the utility power. If the problem
persists, contact an electrician.
Compaq Uninterruptible Power System R12000 XR User Guide
continued
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