Troubleshooting
5-2
HP UPS R12000 XR Models Maintenance and Service Guide
HP CONFIDENTIAL
Codename: Sierra Part Number: 221273-001 Last Saved On: 7/31/02 8:59 AM
Table 5-1: Main Module (MM) and Electronics Modules (M1-M4) Active Alarms
LCD Display
Possible Cause
Actions to Take
x
Alarms
Ambient Over
Temperature
The UPS triggers an alarm if the
ambient temperature inside the
detecting electronics module exceeds
the preset threshold of 80
°
C (176
°
F).
Other than the alarm, no UPS action is
currently associated with this condition.
•
Verify that unit grills are not
blocked and fans are operational.
•
Correct any environmental
conditions that may be causing the
condition. Verify that the ambient
temperature is less
than 40
°
C (104
°
F).
•
Switch to Manual Bypass mode.
Locate and replace the faulty
electronics module.
x
Alarms
Automatic
Shutdown Pending
Batteries are depleted beyond their
lower limits due to the UPS being on
battery for an extended period. The
load has been disengaged and the
system has entered the 30-second
power-down mode.
This is a normal operation. The UPS
restarts when utility power is restored.
x
Alarms
Batteries
Disconnected
This alarm is triggered by one of the
following events:
•
The UPS detects that at least one
battery is installed incorrectly.
•
Not enough battery modules are
installed to support the current
load levels.
•
Remove bezels and check that
each battery module is firmly
seated in its slot. Verify that the
load does not exceed 12 kW.
•
If necessary, replace the faulty
battery module.
x
Alarms
Battery DC Over
Voltage
At least one electronics module detects
that battery voltage is abnormally high
while operating in Battery
mode.
Switch to Manual Bypass mode. Locate
and replace the faulty electronics
module.
x
Alarms
Battery Low
The UPS detects that the current
battery voltage level has dropped
below the preset threshold configured
in the EEPROM for this alarm.
This is a normal operation. The UPS
begins the shutdown process.
This is to be expected when operating
in Battery mode and when the batteries
discharge.
x
Alarms
Battery
n
Needs
Service
The UPS detects a battery fuse failure
or an automated battery test failure.
An automated battery test failure is
reported when battery voltage is less
than 1.8 volts per cell during the first
75 seconds of unscheduled Battery
mode operation.
The variable
n
indicates the slot in
which the faulty battery module is
installed. (For example, slot 1 is the
uppermost bay of the four battery bay
slots.)
Replace the faulty battery module.
x
Alarms
Battery Not
Charged
At least one battery string fails to reach
float voltage after charging for
24 hours. This could indicate a problem
in one or more battery modules.
Replace the faulty battery module.
continued