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Whenever the alarm is operating, the green Power LED is illuminated to
indicate the unit is monitoring for CO. If the alarm senses dangerous lev-
els of CO, the red Alarm LED will flash and the alarm will emit an audi-
ble alarm pattern.
6. Model KN-COB-IC Operating Characteristics
Whenever the alarm is operating, the green Power LED is illuminated
and the digital display will display “0” to indicate the unit is monitoring
for CO. If the alarm senses dangerous levels of CO, the red Alarm LED
will flash, the digital display will indicate the CO concentration in parts
per million (PPM), and the alarm will emit an audible alarm pattern.
This alarm will display a “0” if CO concentrations between 0 and 30
PPM have been detected within the last 15 seconds.
When the unit is first powered up, the digital display will show three
“eights” – indicating the alarm is in the start-up mode. The three
“eights” will remain for approximately 20 seconds. After 20 seconds,
the alarm should display “0” and begin monitoring the air for CO and
will continue to do so as long as it receives power.
7. Model KN-COP-IC (with digital display)
Operating Characteristics
5. Alarm Characteristics
If interconnected to other Kidde alarms and the backup battery (if
equipped) is low or missing, or if the unit malfunctions, it will display
other readings (and alarm differently) to alert you of specific conditions.
Please familiarize yourself, and other family members, to the difference
between a CO reading and and indication signifying a problem with the
unit itself.
WARNING: If at any time you test the alarm and it does not perform as
described, have it r
eplaced immediately.
NOTE: Reference to battery backup operation is only applicable to units
that ar
e equipped with battery backup option.
Smoke Alarm Indicator (inter
connected with CO Alarms)
When an interconnected Kidde smoke alarm detects smoke, the Kidde
CO alarm will sound a smoke/fire alarm pattern of 3 long beeps, fol-
lowed by 1 second of silence. This cycle repeats as long as smoke signal
persists to alert you of the condition. (For model KN-COP-IC with digi-
tal display: The word “Fir
e” will scroll across the digital display). If this
happens, leave the premises immediately by your escape plan and call
your local fire department.
WARNING: This unit is not a smoke alarm and will not detect smoke or
fir
e. It will only alarm for smoke/fire if it receives a signal from an inter-
connected Kidde smoke alarm.
NOTE: A smoke/fire alarm will override a CO alarm condition.
Operating and Alarm Characteristics
6. Model KN-COB-IC Operating Characteristics
Function LED Display Alarm Sound Unit Status Recommendation
Function LED Display Alarm Sound Unit Status Recommendation
Normal
Operation
Green LED
constantly on
None Normal AC
operation (sensing
no CO) and with a
good battery
None
Normal
Operation
Green LED flashes
every 7 seconds
None Normal DC
operation on 9V
battery backup
Verify AC power is
restored as soon as
possible to conserve
battery. Replace
battery.
Carbon
monoxide
alarm
Red LED flashes
with beeps.
Amber LED shows
initiating alarm
4 quick beeps,
5 seconds
silence,
repeating
Alarm condition.
Dangerous
concentrations of
CO detected
Refer to “What to do
When the Alarm
Sounds” (inside front
cover)
Smoke /
fire alarm
Red LED flashes
with beeps
3 long beeps,
1 second
silence,
repeating
Receiving signal
from an intercon-
nected smoke alarm
detecting smoke
Evacuate by your
escape plan
Low
battery
Red LED flashes
every 15 seconds
One quick
beep every 15
seconds
AC powered and
low or missing
battery
Install or replace 9V
battery.
Error /
service
alarm
Red LED flashes
every 30 seconds
One quick
beep every 30
seconds
Unit is in error
condition
Error Red LED
constantly on
Constant
alarm
Very low battery or
unit malfunction
Replace battery.
If “Err” continues,
unit has malfunc-
tioned. Replace
immediately. Unit will
not respond CO
Normal
Test/Reset
function
Red LED flashes
with beeps.
Green and amber
LED’s on
4 quick beeps,
5 seconds
silence,
repeated once
Normal operation
when Test/Reset
button is pressed
CO not detected.
Alarm for test
purposes only