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The following tables contain vital information about the vari-
ous readings you may see on your display. We suggest you
keep this User’s Guide handy for reference.
Your new Kidde Carbon Monoxide Alarm is a sophisticated
electronic device – yet very simple to understand. Basically,
the unit will display a “0” if it does not sense CO and if you
have a good 9 volt backup battery installed.
If your alarm senses carbon monoxide, it will display a read-
ing in parts per million of CO.
If the backup battery is low or missing, or if the unit malfunc-
tions it will display other readings (and alarm differently) to
alert you that something is wrong with the alarm.
Please familiarize yourself and other family members to the
difference between a CO reading and a reading signifying a
problem with the alarm itself.
Display Readings
Start-up and Normal Operation Readings
If at any time the alarm does not perform as described, have it replaced immediately.
23
Brief “888”
Display Shows
Alarm
Sound
Unit
Status
Recommended
Action
One short
“chirp”
Self checking
when AC
powered
None - unit should
return to zero within
one minute
“Lb” flashes
alternately with
“0”
One short
“chirp”
every 15
seconds
Start-up or
reset phase
and low or
missing bat-
tery
Install or replace
9 volt battery
refer to page 2
and page 5
Steady “0” and
flashing dot
None Normal AC oper-
ation ( sensing no
CO and battery is
good)
None
Steady display
of high number
(in the hundreds
of ppm) and
flashing dot
Quick repeating
beep pattern of
4 or 5 beeps
per second
High level of
CO detected
Refer to page
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