3:OPERATION

Front Display Panel

INDICATOR

DESCRIPTION

Online

The UPS is supplying utility power to the connected equipment.

On Battery

The UPS is supplying battery power to the connected equipment.

Overload

The connected loads are drawing more than the UPS power rating.

Replace Battery

The battery must be replaced.

FEATURE

FUNCTION

 

 

Power Button

Press this button to turn the UPS on or off. (Read on for additional capabilities.)

 

 

Self-Test

Automatic: The UPS performs a self-test automatically when turned on, and

 

every two weeks thereafter (by default). During the self-test, the UPS briefly

 

operates the connected equipment on battery.

 

 

Manual: Press and hold the

button for a few seconds to initiate the self-test.

 

 

Cold Start

Supply battery power to the UPS and connected equipment in the absence of

 

utility voltage (see Troubleshooting). Press the

button for one second and

 

release. The UPS will beep briefly and go quiet. Press and hold the button again,

 

but for approximately three seconds. The unit will emit a sustained beep. Re-

 

lease the button during this beep.

 

 

 

 

 

 

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American Power Conversion 420/520 VA user manual Front Display Panel, Operation