Liebert 350-500 VA, User Manual

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15
T
ROUBLESHOOTING
The information below indicates various symptoms a user may
encounter in the event the PowerSure PST experiences a problem. Use
this information to determine whether external factors caused the
problem. See Troubleshooting Chart for suggested remedy.
Guide to Status Indicators
1. The Fault Indicator illuminates, indicating
the UPS detected a problem.
2. An alarm sounds, alerting that the UPS
requires attention. The alarm can be
silenced except for low battery and overload
warning conditions.
3. Utility/Battery Indicator may be illumi-
nated as a diagnostic aid to the operator, as
shown below:
Fault
(Red)
Site Wiring
Fault (Amber)
Utility/Battery
(Green)
Diagnosis/
Audible Alarm
Normal Mode
— — ON
UPS is operating in Normal
Mode; no beep.
— — Flashing Battery Test has been initiated;
no beep.
— Flashing ON Site Wiring Fault; no beep.
Flashing — ON
The unit is overloaded; beep
every half-second
ON — ON
The UPS has failed;
continuous beep
Flashing — —
Unit has shut down due to
overload; continuous beep
ON — —
The UPS shut down due to
failure; continuous beep
Battery Mode
— — Flashing
The UPS is operating in
Battery mode; beep every 5
seconds.
— — Flashing UPS battery is low; beep every
half-second
Flashing — Flashing The unit is overloaded; beep
every half-second
ON — Flashing The UPS has failed;
continuous beep
Fault
Indicator
Site Wiring
Fault Indicator
Utility/Battery
Indicator
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