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52 Operation
Table 5 Alarm Messages
Alarm Message Meaning Corrective Action
Alarm Event The Input contact isolator allows the
user to define events outside of the
UPS that will cause an alarm to show
on the UPS. One of those events has
occurred.
Scroll through the alarm messages to
determine which outside alarm has
occurred. Correct the alarm source
and the alarm message will clear.
Bad Connection An internal connection between PC
boards has come loose or is broken.
Contact Liebert Global Services.
Battery Charger Inhibited:
load above threshold
The input contact isolator option has
triggered inhibition of the battery
charger and the load is above the
threshold selected by the user to
inhibit battery charging.
This alarm normally comes when the
unit is being fed by an alternate
source such as a generator. Battery
charging has been temporarily
inhibited to reduce the load on the
secondary source. If the normal utility
is supplying the load check the
programming of the ICI option in the
User’s Option Manual. If the unit is
being temporarily supplied by a
secondary source, try to reduce the
load below that sources capacity so
the system can resume charging.
Contact Liebert Global Services if
you have questions or problems.
Battery Test Failed The battery test has detected a weak
battery.
If there is no charger alarm, then the
battery has either weak cells or loose
connections. Contact Liebert Global
Services for battery service.
Battery Voltage Unstable A battery cell(s) is not functioning
properly or battery system wiring is
loose.
Contact Liebert Global Services for
battery service.
Bypass Out-of-Sync Bypass input is not stable. UPS
inverter output is not synchronized
with the input power. Automatic
transfers to bypass are prohibited.
This is usually a temporary condition.
If the problem does not correct itself
in 15 minutes contact Liebert Global
Services. Check utility source.
Bypass Overload An overload condition has exceeded
the capacity of the bypass. If not
corrected a fuse will blow resulting in
a system shutdown.
Correct the overload condition. Call
Liebert Global Services if the
condition persists.
Bypass Power Supply Failure Control power is outside the
acceptable limits. Bypass is not
available.
Contact Liebert Global Services.
Bypass SCR Short The system has sensed unexpected
input voltage. The UPS will transfer
to bypass.
Contact Liebert Global Services.
Bypass Sensing Failure Unit will transfer to bypass due to an
internal sensing failure.
Contact Liebert Global Services.
Bypass Voltage
Out of Tolerance
Incorrect Bypass
Input Frequency
Input power voltage or frequency is
outside of the specified tolerance.
Automatic transfers to bypass are
prohibited except in the case of
inverter failure.
In this condition a manual transfer to
bypass is not recommended because
it will be a momentarily interrupted
transfer.
Can’t Execute Battery Test:
Not Recharged
The battery has discharged too
recently (within 72 hours of the
scheduled test time).
No corrective action is required. The
next scheduled battery test will be
performed.