CHAPTER 3
OPERATION
UPS FRONT PANEL INDICATOR AND FUNCTION KEYS
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1
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2 
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3
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1.LOAD LEVEL INDICATOR LEDS
*The first or bottom LED is lit when the output load is greater than 25% of the rated output of the UPS.
*The second LED is lit when the output load is greater than 50% of the rated output of the UPS.
*The third LED is lit when the output load is greater than 75% of the rated output of the UPS.
2.BATTERY LEVEL INDICATOR LEDS
*The third or top LED is lit when the battery is fully charged.
*The Second LED is let when the battery level is above the low battery warning level.
*The first LED is lit when the battery level is above the battery cutoff voltage.
3.LINE / SITE WIRING FAULT INDICATOR LED
For models configured for standard 120 volt domestic usage, this LED is lit to a steady on state when utility voltage is present. However, should the LED flash on and off, it is an indication that the HOT and NEUTRAL wires are reversed somewhere in the building wiring. Typically at the wall outlet.
It is normal for this LED to flash with 208 and 240 volt domestic models as these voltages are normally LINE to LINE, without a neutral.
4.BATTERY MODE INDICATOR LED
This LED is lit when the unit is operating from battery.
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