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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 amber LED will be lit, 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 30 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.
6. Model KN-COPF-i Operating Characteristics
The following table illustrates the possible digital displays, describes the
audible alarm patterns, and the recommended actions to take.
Operating and Alarm Characteristics
LED Display Shows Alarm Sound Unit Status Recommendation
Brief “888” along
with any number
between 100 and 300.
Red LED flashes with beeps.
Green and amber LED’s on.
4 quick beeps,
5 seconds
silence,
repeated once
Self checking when
AC powered (Test
button was pressed
or unit was first
powered)
None – CO has not
been detected.
Numbers shown for
test purposes only
Steady “0” and green
LED constantly on.
None Normal AC
operation (sensing
no CO) and with a
good battery
None
A steady display of
CO concentration
from 30-999. Red
LED flashes with beeps. Amber
LED shows initiating alarm.
4 quick beeps,
5 seconds
silence,
repeating
Alarm condition.
Dangerous
concentrations of
CO detected at
location of alarm.
Refer to “What to do
When the Alarm
Sounds” (inside front
cover)
“Lb” flashes
alternately with
any number.
Red LED flashes
every 60 seconds.
One quick
beep every
60 seconds
Battery voltage is
low.
Ensure AC power is
present and allow
battery to charge for
several hours
Steady “CO”
Red LED flashes with
beeps. Amber LED
NOT illuminated
4 quick beeps,
5 seconds
silence,
repeating
Interconnected CO
alarm warning of a
CO condition at
different location.
Refer to “What to do
When the Alarm
Sounds” (inside front
cover)
“FirE”
Red LED flashes
with beeps
3 long beeps,
1 second
silence,
repeating
Interconnected
smoke alarm
warning of a
smoke/fire condition
Evacuate by your
escape plan
Steady “Err”
Red LED flashes every
30 seconds
One quick
beep every
30 seconds
Unit malfunction Press the Test/Reset
button. If “Err” con-
tinues, unit has mal-
functioned. Replace
immediately. Unit will
not respond to CO
6. Model KN-COPF-i Operating Characteristics
No display alternating
with display of CO
concentration every 60
seconds. Red LED
flashes with beeps
4 quick beeps,
5 seconds
silence,
repeating
every 60 secs
Alarm condition
powered on battery
backup. Dangerous
concentrations of
CO detected
Refer to “What to do
When the Alarm
Sounds” (inside front
cover).
Replace battery
No display alternating
with “0” every 60
seconds.
Green LED flashes
every 30 seconds
None Normal operation
after first 4 minutes
of battery backup
operation. Unit
monitoring for CO
Verify AC power is
restored as soon as
possible to maintain
battery.
Peak Level Memory
When the Peak Level button is pressed and held, the display shows the
highest CO reading taken by the CO alarm since its last reset or power
up. The Peak Level display feature will display levels between 11-999
PPM. Although the Peak Level feature will display levels below 30 PPM,
these levels will not result in an alarm no matter how long the device is
exposed to these levels. The Peak Level feature is helpful in identifying if
you have had a CO reading since resetting the alarm.
Concentrations of CO between 1 and 30 PPM can often occur in nor-
mal, everyday conditions. Concentrations of CO below 30 PPM may be
an indication of a transient condition that may appear today and never
reappear. Some CO conditions may start out as low level leaks but could
develop into CO concentrations that may become harmful.
Peak Level Memory Reset
Press the Peak Level button; with the button still pressed, pr
ess the
T
est/Reset button for two seconds and release. The number on the dis-
play will turn to “0”, the memory will be cleared and the alarm will
begin monitoring for CO. The Peak Level memory is also reset when the
unit loses power.
“End” displayed.
Red LED flashes
every 30 seconds
One quick beep
every 30 seconds
End of unit life Replace unit immedi-
ately. Unit will not
respond to CO.
LED Display Shows Alarm Sound Unit Status Recommendation