Emerson 1000 User Manual

The information below indicates various symptoms a user may encounter if the Liebert PSI XR expe-

riences a problem. See Table 9 for suggested solutions.
1. An alarm sounds, alerting that the UPS requires attention. The alarm can be silenced except for 

low battery, overload warning and fault.

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 3.0 - Installation. If the 

problem persists, refer to Table 9.
Table 9

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, local Emerson 

representative or Channel Support 

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 and restart 

the UPS.

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, local Emerson 

representative or Channel Support 

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 MultiLink software

Consult the Liebert MultiLink user 

manual or contact your LAN 

administrator.

Site Wiring Fault LED (LED 4) flashing

Site Wiring Fault, UPS detected a 

line-to-neutral reversal or a loss of 

proper grounding.

Have the utility checked by a 

properly trained and qualified 

electrician.

Battery weak LED (LED 3) flashing

Batteries weak

Recharge batteries.

Batteries need to be replaced

Replace batteries.

NOTE
The PS2200RT3-120XR UPS will sound an Overload alarm under certain Low Line