Chapter 1 Hardware Installation
UNS Series Hardware Installation Guide
12
The following table describes the LEDs and buzzer on the power module.
1.7.3 UNS Power Switch LEDs
The LEDs are above the power switch.
The following table describes the LEDs on the UNS power switch.
Table 3 Power Module LEDs and Buzzer
LED/BUTTON COLOR STATUS DESCRIPTION
AC Green On The power module is receiving AC power.
Blinking This power module is not receiving AC power.
Off Both power modules are not receiving AC power.
DC Green On The power module is receiving DC power.
Off Both power modules are not receiving DC power.
! Amber On There is power supply failure.
Blinking Power supply to the module is low.
Off Power supply to the module is abnormal (too much current or not
enough voltage) or the temperature is too high.
Buzzer Button
(B)
Red N/A If the alarm sounds, push the buzzer button (1) to turn the alarm off.
The buzzer LED (1) will then turn from red to green.
Buzzer LED Red On An alarm sounds if one of the power modules is connected but not
supplying power to the UNS.
Green On The power module(s) connected to the UNS are supplying power
normally or the buzzer button (1) has been used to turn the alarm off
(if one of the connected power modules is not supplying power to the
UNS.
Off The power module(s) connected are not receiving power.
Table 4 UNS Power Switch LEDs
LED COLOR STATUS DESCRIPTION
1 - Power Green On The UNS has booted successfully.
Blinking The UNS is booting or shutting down.
Off The power is off.