Dell 3750W User Manual page 68

Table 15. Typical Alarms and Conditions (continued)
Alarm or Condition
Battery test did not run or
was interrupted.
The UPS does not transfer to
Bypass mode.
UPS on Bypass
(Notice 169)
Continuous Alarm
On Manual Bypass
(Notice 143)
Intermittent Alarm
UPS on Battery
(Notice 168)
Intermittent Alarm
Battery Disconnected
(Alarm 199)
Continuous Alarm
Low Battery Warning
(Alarm 56)
Continuous Alarm
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68
Troubleshooting
Possible Cause
One of the conditions listed in
"Running Automatic Battery
Tests" on page 53 was not
present.
The bypass utility does not
qualify.
Bypass mode is disabled.
The UPS is operating from
Bypass mode.
UPS was manually commanded
to transfer to Bypass mode and
will remain in bypass until
commanded.
A utility failure has occurred
and the UPS is in Battery mode.
The UPS does not recognize the
internal batteries.
Battery voltage is lower than the
batteries disconnected level
defined for this UPS. This may
be due to a blown fuse,
intermittent battery
connection, or battery cable
being disconnected.
Battery time remaining or
battery capacity is lower than
the battery low warning level
defined for this UPS.
Action
Resolve the condition, then restart the test.
Check the bypass utility. The UPS is receiving
bypass utility power that may be unstable or in
brownout conditions.
Check that the Bypass settings are configured
correctly. See "Settings" on page 42.
The equipment transferred to bypass utility
power. Battery mode is not available and your
equipment is not protected; however, the
utility power continues to be passively filtered
by the UPS. Check for one of the following
alarms: overtemperature, overload, or UPS
failure.
None.
The UPS is powering the equipment with
battery power. Prepare your equipment for
shutdown.
If the condition persists, contact your service
representative.
Verify that all batteries are properly connected.
If the condition persists, contact your service
representative.
This warning is approximate. The actual time to
shutdown may vary depending on the UPS load
and presence of an External Battery Module
(EBM).