Liebert 500-650 VA user manual Troubleshooting Chart, Start

Troubleshooting Chart

If the UPS fails to operate properly, turn off the unit and repeat the steps in the Installation section of this manual. If the problem per- sists, refer to the chart below:

Problem	Cause	Solution
		Check the circuit protector on the side
UPS will not	Overload/	of the UPS. If it is tripped, reset it and
		restart the UPS.
start	Short circuit	For further help, call your local dealer,
		Liebert representative or the Liebert
		Worldwide Support Group.
	UPS not plugged in	Plug in power cord securely.
	Circuit protector	Reset the circuit protector and restart
	tripped	the UPS.
	Power not available	Have the mains receptacle checked
UPS starts	at mains receptacle	by a qualified electrician.
on battery,	Input voltage below	Wait until the voltage rises to an
but will not		appropriate level or have the mains
switch to AC	threshold	receptacle checked by a qualified
		electrician.
		Wait until voltage lowers to an
	AC overvoltage	appropriate level or have the mains
		receptacle checked by a qualified
		electrician.
	Overload/	Check the circuit protector on the rear
	Short circuit	of the UPS. If it is tripped, reset it and
		restart the UPS.
UPS shuts		If the problem persists, disconnect
		some of the equipment from your
down, Fault		UPS—the total wattage of your
Indicator lit	Internal UPS fault	equipment must not exceed the
		capacity of the UPS. For further help,
		call your local dealer, Liebert
		representative or the Liebert
		Worldwide Support Group.
UPS not	Overload	Reduce load.
providing	Battery not charged	Recharge battery.
expected	due to a recent
backup time	outage

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