American Power Conversion VT ISX Troubleshooting, Display messages, Meaning, Corrective action

Troubleshooting

This section lists the status and alarm messages that the UPS might display. The messages are listed in alphabetical order, and a suggested corrective action is listed with each alarm message to help you troubleshoot problems.

Display messages

Display message	Meaning	Corrective action
Automatic Self Test	The UPS has started pre-programmed	No corrective action necessary.
Started.	battery test.
Batt Temperature	The temperature of one or more bat-	Contact APC Customer Support.
Exceeded Upper Limit.	tery units has exceeded system	See rear cover.
	specifications.
Battery over-voltage	The battery voltage is too high and	Contact APC Customer Support.
warning.	the charger has been deactivated.	See rear cover.
Bypass Not Available	The frequency or voltage is out of	Correct the input voltage to provide
Input Freq/Volt Out Of	acceptable range for bypass. This	acceptable voltage or frequency.
Range.	message occurs when the UPS is
	online, and indicates that the bypass
	mode may not be available if
	required.
Discharged Battery.	The UPS is in battery operation and	No corrective action necessary. Shut
	the battery charge is low.	down the system and the load
	Note: Runtime is limited in duration.	equipment or restore incoming
		voltage.
Emergency PSU Fault.	Redundant Emergency Power Supply	Contact APC Customer Support. See
	Unit (PSU) is not working. The UPS	rear cover.
	will continue to work normally, but
	the PSU should be replaced.
EPO Activated.	Emergency Power Off Switch has	Deactivate Emergency Power Off
	been activated.	Switch.
Fan fault.	A fan has failed.	Contact APC Customer Support. See
		rear cover.
Int. Mech. Bypass	The internal mechanical switchgear is	No corrective action necessary. The
Switch Closed.	closed.	UPS is in internal mechanical bypass
		operation.
Int. Mech. Bypass	The internal mechanical switchgear is	No corrective action necessary.
Switch Open.	open.
Low-Battery.	The UPS is in battery operation and	Shut down the system and the load
	the battery charge is low.	equipment or restore incoming volt-
	Note: Runtime is limited in duration.	age.

24 Smart-UPS® ISX 30-40 kVA, 400V Operation 990-2820A