APC CP27, CP16 Operation, Status Indicators and Features, Front Panel, Automatic Self-Test

Chapter 3: Operation

Status Indicators and Features

Front Panel

Status

Indicators

Indicator		Description
Utility		Solid green indicates the unit is on utility power.
		Solid yellow indicates that utility power is not present and the unit is on battery
		power.
		Flashing green LED indicates the unit is fast-charging.
Output		Green indicates the unit is working properly and DC output power is provided
		by the battery or the utility power.
Replace Battery/		Red indicates that the battery must be replaced or that the battery is
Alarm Silence		disconnected. See Battery Replacement.
	/	Pressing this button will silence the audible alarm. See Alarm Silence Button.

Automatic Self-Test

The unit automatically performs a self-test 31 hours after initial installation. Following this, a battery self-test will occur every 30 days. See Alarm Silence Button for manual self-test information.

Audible Alarm

Explanation	Description
On	Four beeps in four seconds will be emitted one time only. This alarm will sound
Battery	when the utility power is lost and the unit goes on battery power.
Low	Every five minutes, four beeps in four seconds will be emitted. This alarm will
Battery	sound when operating on battery and the battery voltage has dropped below
Voltage	threshold, indicating that less than 20% of available runtime remains.
Replace Battery	Every fifteen minutes, there will be a quarter-second beep when the battery fails
	the automatic self-test.
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