Operation | Emerson 208, 240V instruction

		Troubleshooting

User Interface Text	Cause	Action

Assert manual	A user-initiated transfer to bypass will	Engage the manual bypass switch (located at the bottom
bypass	assert this alarm, instructing the user to	front on the left hand corner of the unit). Once engaged,
	enable the manual bypass switch. Once	the switch may be de-asserted to return to normal
	the manual bypass is asserted, the alarm	operation.
	will clear. This is a non-mutable alarm.
Remote shutdown	The most likely cause is that the incorrect	Check for a wiring problem to the Shutdown On Battery at
on COM port 1	cable has been connected to the COM	the COM1 connector. If this problem is not addressed, the
active	port between the UPS and the host.	unit will shut down shortly after switching to battery
		operation.
Battery Test	The battery was determined to be weak	Depending on the age of the batteries, it may be
Weak Battery	as a result of the battery test.	appropriate to replace all batteries in the system.
		Schedule a battery test so that the system operation is
		double-checked once the batteries become fully charged.
Battery Test	One or more of the following was	Replace the battery modules that have active failures/
Failure	detected during a battery test:	warnings. Depending on the age of the batteries, it may be
	• UPS output regulation failure was	appropriate to replace all batteries in the system.
	detected.	Schedule a battery test so that the system operation is
	• A battery module warning or failure	double-checked once the batteries become fully charged.
	occurred.
	• A system control failure occurred.
Battery Cabinet	This is intended to detect a situation	Check that the Modular Battery breaker is closed. Verify
Not Connected	where a Modular battery cabinet has	proper connections between UPS and Modular Battery
	been connected for communication, but	Cabinet.
	the power busses are not connected.
Don’t Remove SC	The only good System Control Module	• Lower the lock lever on the System Control Module.
	lock lever was raised with the output on	• Provide qualified bypass power so that transfer to
	and the unit is not on bypass.	bypass is possible.
		• Add a redundant System Control Module so that the load
		is not dropped.
Failure: Select	The System Controller detected a failure.	Transfer UPS to manual bypass and contact Liebert
Manual Bypass	Select manual bypass so that the unit can	Global Services.
	be serviced.
Output Off -	This event informs the user that bypass	Verify that the UPS’s bypass source is qualified (amplitude
bypass unavailable	was not qualified so the unit dropped the	and frequency). Verify that the configuration voltage and
	load to protect itself.	frequency settings are properly selected.
Last UPS Shutdown	REPO switch was pressed.	If REPO wasn’t pressed, check for REPO wiring problems.
By Emergency
Power Off
External Battery	The energy delivered from the Non-	Verify proper connections between UPS and Non-Modular
Module Warning	Modular battery did not meet	Battery Cabinet. Reenter the amp-hour rating for the
	programmed battery capacity.	external battery (set the amp-hour entry to zero and press
		the return key, then reset it to the appropriate value for the
		external battery). If the problem persists, the external
		battery should be replaced.
Battery Module	A battery module is not ready. In most	Ensure that the battery module is fully seated and the 1/4
Not Ready	cases, one or more battery modules	turn fastener is engaged. If the problem persists, replace
	should indicate a warning/failure	the battery module with warning/failure condition indicated
	condition.	at the User Interface. If no User Interface warning/failure
		of battery module, look for the battery module with LEDs
		indicating a problem and replace that unit.
Power Module	A power module is not ready. In most	Ensure that the power module is fully seated and the 1/4
Not Ready	cases, one or more power modules	turn fastener is engaged. If the problem persists, replace
	should indicate a warning or failure	the power module with warning/failure condition indicated
	condition.	at the User Interface. If no User Interface warning/failure
		of power module, look for the power module with LEDs
		indicating a problem and replace that unit.

User Interface Text

operation.