Liebert 500-650 VA - Manual (Page 19)

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. Mains/Battery Indicator may be illuminated
as a diagnostic aid to the operator, as shown
below:
Fault
(Red)
Mains/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
The unit is overloaded; beep every
half-second
ON ON The UPS has failed; continuous beep
Flashing —
Unit has shutdown due to overload;
continuous beep
ON —
The UPS shutdown 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
Mains/
Battery
Indicator
!
+ -