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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.
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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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