Vertiv Liebert PSI XR 1000, User Manual

Page: 35 / 38

9 TROUBLESHOOTING
The information below indicates various symptoms a user may encounter in the event the Liebert PSI XR
experiences a problem. See Table 9.1 below for suggested solutions.
1. An alarm sounds, alerting that the UPS requires attention. The alarm can be silenced except
for low battery and overload warnings.
2. One or more additional indicators will be illuminated to provide a diagnostic aid to the operator,
as described below:
If the UPS fails to operate properly, turn Off the unit and repeat the steps in Installation on page 9. If the
problem persists, refer to Table 9.1 below.
Problem Cause Solution
UPS will not start
Short circuit
Check the circuit breaker on the rear of the UPS.
If it is tripped, reset it and restart the UPS. For help, contact your local dealer,
Vertiv representative or Liebert Applications.
Battery is disconnected or completely
discharged
Check for proper connection of battery or batteries.
UPS starts on battery,
but will not switch to AC
(dark start)
UPS not plugged in Plug in the power cord securely.
Circuit breaker tripped Reset the circuit breaker.
AC overvoltage
Wait until voltage drops to an appropriate level or have the utility power checked
by a properly trained and qualified electrician.
UPS shuts down
Short circuit or UPS output is abnormal;
LED 10 and LED 11 illuminate and sound
audible alarm
Remove the load and turn on the UPS again. For help, contact your local dealer,
Vertiv representative or Liebert Applications.
Overload; LED 5 and LED 11 illuminate
and sound audible alarm
Check load level display and remove nonessential loads. Recalculate the load
and reduce equipment connected to UPS - the total wattage must not exceed
the capacity of the UPS.
LED 3 and LED 11 illuminate and sound
audible alarm
Recharge the battery for 8 hours, then turn ON the UPS.
Liebert shutdown software
Consult the Liebert shutdown software user manual or contact your LAN
administrator.
Battery Weak LED (LED
3) flashing
Batteries weak Recharge batteries.
Batteries need to be replaced Replace batteries.
Table 9.1 Troubleshooting—problems, causes and solutions
NOTES
Vertiv | Liebert® PSI XR™ User Manual | 31