Liebert PSI XR user manual Troubleshooting

Troubleshooting

9.0TROUBLESHOOTING

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	Troubleshooting—problems, causes and solutions
	Problem	Cause	Solution
			Check the circuit breaker on the
			rear of the UPS.
		Short circuit	If it is tripped, reset it and restart the
UPS will not start			UPS. For help, contact your local
			dealer, Emerson representative or
			Liebert Applications.
		Battery is disconnected or	Check for proper connection of
		completely discharged	battery or batteries.
		UPS not plugged in	Plug in the power cord securely.
		Circuit breaker tripped	Reset the circuit breaker and restart
UPS starts on battery, but will not			the UPS.
			Wait until voltage drops to an
switch to AC (dark start)
		AC overvoltage	appropriate level or have the utility
			power checked by a properly
			trained and qualified electrician.
		Short circuit or UPS output is	Remove the load and turn on the
			UPS again. For help, contact your
		abnormal; LED 10 and LED 11
			local dealer, Emerson
		illuminate and sound audible
			representative or Liebert
		alarm
			Applications.
			Check load level display and
		Overload; LED 5 and LED 11	remove nonessential loads.
			Recalculate the load and reduce
UPS shuts down		illuminate and sound audible
			equipment connected to UPS - the
		alarm
			total wattage must not exceed the
			capacity of the UPS.
		LED 3 and LED 11 illuminate and	Recharge the battery for 8 hours,
		sound audible alarm	then turn ON the UPS.
		Liebert MultiLink shutdown	Consult the Liebert MultiLink
			software user manual or contact
		software
			your LAN administrator.
		Site Wiring Fault, UPS detected a	Have the utility checked by a
Site Wiring Fault LED (LED 4) flashing		line-to-neutral reversal or a loss of	properly trained and qualified
		proper grounding.	electrician.
Battery weak LED (LED 3) flashing		Batteries weak	Recharge batteries.
		Batteries need to be replaced	Replace batteries.

NOTE

The 1920VA UPS will sound an Overload alarm under certain Low Line conditions when it is fully loaded and it exceeds the input current rating. Unless the load is reduced, the condition will trip the branch circuit breaker.

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