Basic Operation (Continued)
Indicator Lights
Light descriptions apply when the UPS is plugged into a wall outlet and turned ON.
This green light will shine constantly to indicate AC power is available at the receptacles. It will flash to indicate AC power is not available. (See “System Enable Switch” and “On/Standby Switch” descriptions above.)
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Whenever your UPS is automatically correcting high or low AC line voltage, this green light will turn ON and the UPS will gently click. These are both normal, automatic operations of your UPS, and no action is required on your part.
This red light will turn ON if your UPS fails a
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This red light will turn ON when you set the Maintenance Bypass Switch to “BYPASS”, indicating that the Power Module has turned off its battery charger, allowing you to properly disconnect and replace the Battery Packs. The light may also come on if Battery Packs are improperly disconnected, indicating that the Power Module is protecting itself from potential overvoltages. While this light is on, the UPS will still provide filtered utility AC power and will provide battery backup power if any batteries are connected. DB9 communications are unaffected. To return the UPS's charger to normal operation, set the Maintenance Bypass Switch to “NORMAL”. If the light has come on due to improper battery disconnection, cycle the Maintenance Bypass Switch to “BY- PASS” then to “NORMAL” to reset the UPS.
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