APC BC300 manual Alarm Messages, Possible Alarms, Alarm Description Action Message

Alarms and Events

5.3Alarm Messages

		Table 5: Possible Alarms
	Alarm	Description	Action
	Message
	Battery MCB is	The battery breaker is open. If	At the battery breaker, set the
	off	bypass voltage is within tolerance,	precharge/discharge switch to the
		the unit transfers to static bypass	precharge position and hold it in
		operation. If not, the unit transfers	this position until the LED turns
		to stand-by and does not supply	off. Precharge is very important
		output voltage.	to prevent damage to your
			equipment. After precharge,
			switch the battery breaker on.
	Battery Monitor	The battery monitor test has found	Call APC Global Service to
	Alarms	that the battery pack is near low	schedule battery maintenance.
		runtime capacity or that the
		battery pack may have a problem.
		The unit’s status does not change,
		but when the unit operates on
		battery, runtime will be seriously
		reduced.
	Battery Monitor	The battery monitor test has found	See the “Parameter Settings”
	Warning	that battery capacity is reduced	section of this User Guide to
		(typically below 80%). The unit’s	display the parameters. Then,
		status does not change, but the unit	change the “Battery monitor
		will not be able to operate as long	reset” parameter to “ON.” This
		on battery (it will have reduced	will clear the Battery Monitor
		runtime).	Warning. Next, do a battery
			monitor test (see the “Battery
			Monitor Test” section). If the
			alarm starts again, call APC
			Global Service to schedule
			battery maintenance.
	Bypass freq. is	The bypass frequency is out of	Ask an electrician to make sure
	out of tolerance	tolerance (too high, low, or	that the correct input frequency is
		unstable). The unit may transfer to	being supplied to the UPS. If so,
		battery or stand-by operation; it	and if this voltage is within the
		cannot operate in static bypass.	range accepted by the UPS, call
			APC Global Service.
	Bypass is	The bypass voltage was	Ask an electrician to make sure
	moment. out of	momentarily out of tolerance. The	that the correct input voltage is
	tolerance (This	unit may transfer to battery or	being supplied to the UPS. If so,
	alarm occurs	stand-by operation; it cannot	and if this voltage is within the
	when there is a	operate in static bypass.	range accepted by the UPS, call
	power outage)		APC Global Service.
	Bypass is out of	The bypass voltage is out of	Ask an electrician to make sure
	tolerance (This	tolerance (too high or low). The unit	that the correct input voltage is
	alarm occurs	may transfer to battery or stand-by	being supplied to the UPS. If so,
	when there is a	operation; it cannot operate in	call APC Global Service.
	power outage)	static bypass.
990-1403
14	User Guide APC BC300 Series 40kW 208/450/480V UPS