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A
B
C
D
Symbols, LEDs and Audible Beeps
The front panel LEDs and an audible beep indicate the unit status. The unit beeps whenever the
unit is on battery power or an alarm is present. See Table 2 for information on beep coding.
In the figure below, bucking means that Patriot Pro II is reducing high input voltage, and
boosting means Patriot Pro II is increasing low input voltage.
Symbols and LEDs
What It Means
Steady: Acceptable input power is present. The unit is
running on line power.
Off: No input power is present or the unit is switched off.
The unit is running on battery power.
Output Overload: Refer to Tables 2 and 3.
Replace the Battery or UPS Fault. Refer to Tables 2 and 3.
Blinking: The unit is boosting or bucking utility power.
Boost = Automatically increases low input power to prevent
the unit from switching to battery.
Buck = Automatically decreases high input power to prevent
the unit from switching to battery.
Table 1: Symbols and LEDs
AC LINE
(Green)
LINE CORRECTION
(Green)
BATTERY MODE
(Yellow)
OVERLOAD, (D LED)
(Yellow)
WARNING, (D LED)
(Yellow)
Steady: Patriot Pro II is operating on AC line.
Blinking: Patriot Pro II is bucking or
boosting input AC line.
Steady: Patriot Pro II is operating on batteries.
AC Line Operation:
A, B, C and D indicate
per cent of full load.
A, B, C & D with D flashing,
load = 110% or higher.
A, B, C & D = 75 - 100%
A, B & C = 50 -75%
A & B = 25 - 50%
A = 0 - 25%
Battery Operation:
A, B, C and D indicate
battery charge.
A, B, C & D = 75 - 100%.
B, C & D = 50 - 75%
C & D = 25 - 50%
D = 0 - 25%; when D is
flashing, less than 2 minutes
of runtime remain.
Blinking = ALARM Condition
C = UPS shutdown due to output overload time-out.
B = UPS failed the battery test.
B & C = UPS shutdown due to command from
communication (RS232, remote shutdown
or External SNMP)
A & B = UPS shutdown due to main relay failure
or output short circuit
A = UPS Fault (overcharge)
