Kidde PI9000CA - Manual (Page 13)

Operation
12
LED Indicators
This smoke alarm is equipped with a red LED indicator.
The red LED is located under the test button and has
several modes of operation.
Standby Condition The red LED will flash every 30–40
seconds to indicate that the smoke
alarm is operating properly.
Alarm Condition When the alarm senses particles of
combustion and goes into alarm, the
red LED will flash rapidly (once every
two seconds). The rapid flashing LED
and temporal alarm will continue
until the air is cleared.
Hush Condition The red LED will flash every 2 seconds
as long as the alarm is in Hush
® mode.
Low Battery Condition The red LED will be accompanied
by an audible chirp. Replace the
battery when this condition occurs.
Alarm Memory This smoke alarm is equipped with an
alarm memory feature which produces
a rapid chirping sound when the test
button is pushed. This sound indicates
that the alarm has been activated
since it was last tested. Releasing
the test button clears the memory.
If the alarm memory sound is heard,
release the test button and press the
test button again to enter the normal
test mode.
Smoke Sensing Chamber Operation
The alarm will “chirp” if any of the components in the
smoke sensing chamber fail. This chirp will occur between
the flashes of the red LED indicator light. If the “chirp”
occurs at the same time as the red LED flash, see Battery
Replacement
section for more information.