HP R12000 XR 51

Troubleshooting

Table 5-1: Main Module and Electronics Modules M1-M4 Active Alarms continued

LCD Display	Possible Cause	Suggested Action
x Alarms	The UPS detects that the current load	Reduce the load level to clear the
	has exceeded 120% of the maximum	alarm. If the alarm persists after load
Level 4 Overload –	has exceeded 120% of the maximum	alarm. If the alarm persists after load
Level 4 Overload –	capacity available, which means it is	reduction, see the LCD panel to
Phase A	capacity available, which means it is	reduction, see the LCD panel to
Phase A	operating in Nonredundant mode.	determine which electronics module is
	operating in Nonredundant mode.	determine which electronics module is
	The UPS will transfer to Bypass mode	reporting overload.
	The UPS will transfer to Bypass mode
	within one second and remain in that	Contact Technical Support for
	mode due to the excessive overload	assistance.
	condition.

x Alarms	The UPS detects that the current load	If redundant operation is desired,
	level has exceeded the maximum safe	reduce the load until the alarm clears.
Loss of	level has exceeded the maximum safe	reduce the load until the alarm clears.
Loss of	load level limits that would provide
Redundancy	load level limits that would provide
Redundancy	redundancy protection to the
	redundancy protection to the
	electronics modules.
	The system will continue to operate,
	but will no longer be in Redundant
	mode. The load could be at risk if an
	electronics module fails.

x Alarms	The UPS detects that its electronics	Switch to Maintenance Bypass mode,
	modules are having trouble	and restart the system.
Loss of Sync-Bus	modules are having trouble	and restart the system.
Loss of Sync-Bus	synchronizing with the input utility	Contact Technical Support for
	synchronizing with the input utility
	source. The most likely cause is a poor
	source. The most likely cause is a poor	assistance.
	utility source supplying the UPS.	assistance.
	utility source supplying the UPS.

x Alarms	While on battery, the UPS detects that	This is a normal operation.
	the battery voltage level has dropped
Low Battery	the battery voltage level has dropped
Low Battery	below the lowest preset threshold
Shutdown	below the lowest preset threshold
Shutdown	value. The UPS will be shut down.
	value. The UPS will be shut down.
	This normal alarm condition occurs at
	the end of a battery discharge cycle.
	The threshold represents the lowest
	allowable battery discharge level for the
	batteries before they can no longer
	safely support the load. Once valid
	utility returns, the UPS will assume the
	load after a minimum charge level has
	been restored to the batteries, and it
	will begin a complete battery recharge
	cycle.

x Alarms	The UPS detects an EEPROM	Check the website (www.hp.com) for
	Checksum Failure in the electronics	Flash upgrades.
Non-volatile	Checksum Failure in the electronics	Flash upgrades.
Non-volatile	module or supervisory board. This	Contact Technical Support for
Memory	module or supervisory board. This
Memory	condition must be resolved before the
Checksum Fail	condition must be resolved before the	assistance.
Checksum Fail	UPS can complete its initialization and	assistance.
	UPS can complete its initialization and
	start successfully.
	This alarm is most common after a
	flash upgrade that requires an
	EEPROM upgrade for the new
	embedded software to function
	correctly. The upgrade documentation
	will describe this condition.

		continued

HP Uninterruptible Power System R12000 XR Models User Guide

5-7