Compaq 341251-002 Operation And Reference Manual page 43

Load Level (LEDs 11-14)
LED Color
11 Red
12 Green
13 Green
14 Green
Communication (LED 15)
LED Color
15 Green
Flashing
Green
On (LED 16)
If LED 16 is green, power is available at the UPS output receptacles.
Table 3-5
Load Level LEDs
Load on the UPS exceeds the maximum power available.
Load on the UPS is approximately 67% to 100% of the
maximum power available.
(LEDs 13 and 14 are also green)
Load on the UPS is approximately 66% of the maximum power
available.
(LED 14 is also green)
Load on the UPS is approximately 33% of the maximum power
available.
Table 3-6
Communication LED
The communication link between the UPS and the host
computer is active.
Data is being transferred between the UPS and the host
computer.
Meaning
Meaning
Operation 3-7