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Chapter 11 Troubleshooting
Alarms and faults (continued)
Condition
Battery low
LED is On.
1 beep every 3 seconds.
No battery
LED is On.
Beep continuous.
Battery fault (Battery test failed)
LED is On.
Beep continuous.
Battery test cancelled
UPS Underload.
Error message displayed in LCD
panel.
166
Possible cause
The UPS has been in Battery
mode too long.
This warning is approximate, and
the actual time to shut down
might vary significantly.
Depending on the UPS load and
the number of Extended Battery
Modules (EBMs), the "Battery
Low" warning might occur before
the battery packs reach 20%
capacity.
The batteries are not connected,
or the circuit breaker on the
batteries is off.
The battery test is failed because
of a bad battery pack, because
the battery pack is not connected
battery pack, or because the
battery minimum voltage is
reached in Advanced Battery
Management (ABM) cycling
mode.
Batter test is cancelled.
Action
Shut down equipment.
Connect all EBMs properly. Both
batter power and battery
detection cables must be
connected.
If the condition persists, contact
your service representative.
Verify that all battery packs are
properly connected. Start a new
battery test: if the condition
persists, contact your service
representative.
Criteria for a battery test to
complete successfully is not met
and the UPS cancelled the test.
See
R unning a battery test
further details.
6U Rack or Tower UPS RT8kVA and RT11kVA IUOMG
for
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