Delta 1KVA User Manual page 9

B. LED Display：
1. ON Line: The UPS is running in "ON-LINE mode".
2. Line: The LED indicates the condition of UPS input line. If the input
voltage is too low, too high or out of frequency this LED will flash. When
line is blackout or ultra high voltage (>300Vac), this LED will light off.
3. Bypass: The LED indicates UPS in "BYPASS mode".
4. Fault: The LED indicates that the UPS is fault. The LED Flash indicates
that the UPS is overheat.
5. Level LEDs: The four LEDs indicate the battery capacity in
"ON-BATTERY mode" or UPS load percentage in "ON-LINE mode".
6. Overload: The LED indicates UPS' load exceed the rating, after a
limited period, the UPS will transfer to "BYPASS mode" and the LED
will still light on to alarm the user.
7. Load: "Level LEDs" shows the UPS load level when the LED lights up.
8. Battery: "Level LEDs" shows the current battery capacity when the LED
lights up.
9. Battery low: The LED indicates the battery in battery low condition.
10. Battery replace: The LED indicates the batteries are weak and suggest
the user to replace the batteries.
11. ON Battery: The UPS is running in "ON-BATTERY mode" (backup
mode), the internal batteries supply power.
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SHEET 9 TO 10