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10 Section 2 • Operation
Interpreting the LED Display
The front panel LEDs indicate how the UPS is functioning and also
warn about possible problems. Figure 4 and Table 1 explain how to
interpret the LEDs when the UPS is in Operation mode. When the UPS
is in Configuration mode, the front panel LEDs provide different
information. For more information about how to interpret LEDs when
the UPS is in Configuration mode, see Section 3, Configuration.
NOTE
The front panel may be rotated clockwise 90 degrees on some models.
ON
Button
OFF/Standby
Button
Test/Alarm
Reset Button
10
Battery
Service LED
Red
5
Site Wiring
Fault LED
Red
1
2
3
4
Red
Input Too High
Green
Input Normal
Green
Double Boost On
Red
Input Too Low
AC
Input
LEDs
6
7
8
9
Green
Green
Green
Red
Battery >90%
Battery >66-90%
Battery >33-66%
Battery Low
Battery
Charge
LEDs
Red
Green
Green
Green
Load Levels
LEDs
Overload
Load >66-100%
Load >33-66%
Load 5-33%
11
12
13
14
16
Green
ON LED
15
Communication LED
Green
Figure 4. Interpreting LEDs in Operation Mode
Summary of Contents for ACE Series
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