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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-COPP-3 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.
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” displayed. None Normal AC
operation (sensing
no CO) and with a
good battery
None
A display of CO
concentration from
30-999.
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)
“Lb” flashes
alternately with
any number.
One quick
beep every
15 seconds
AC powered and
low or missing
battery
Install or replace 9V
battery
Steady “Err displayed One quick
beep every
30 seconds
Unit malfunction
Replace battery. If "Err"
continues, unit has
malfunctioned and must
be replaced immediately.
Unit will not respond to
CO. Press the Peak Level
button while unit is in
"Err" mode to obtain
error code and call
Product Support Line.
No display alternating
with display of CO
concentration every 60
seconds.
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.
None Normal operation
after first 4 minutes
of 9 V battery
operation. Unit
monitoring for CO
Verify AC power is
restored as soon as
possible to conserve
battery.
Replace battery
“End” displayed. Two quick beeps
every 30 seconds
End of unit life Replace unit immedi-
ately. Unit will not
respond to CO.
2507-7229-01(820-1388_RevC).qxd:_ 2013.4.1 12:25 PM P
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