Operation characteristics
Table 1: Operation characteristics
LED Display
Alarm sound
Unit status
Control panel status
Recommendation
Normal operation
Green Power
LED flashes
every 30
seconds.
None. Normal
DC
operation
(sensing no CO) and
with good batteries.
Normal operating
condition.
None.
Carbon monoxide
alarm
Red Alarm LED
flashes with
beeps.
Four quick beeps,
5 seconds silence,
repeating.
Alarm condition.
Dangerous
concentrations of CO
detected.
Alarm condition.
See “Alarm procedure” on page 8.
Low battery /
low battery hush
Red Alarm LED
flashes every 60
seconds.
One quick beep
every 60 seconds.
Batteries need to be
replaced.
Trouble condition,
trouble beeps every 60
seconds.
Replace all three AA batteries.
Press Test/Hush button and release. This
will silence the low battery audible chirp
between 8 and 11 hours allowing for a
more convenient time to replace the
batteries.
Alarm end-of-life
indicator
Red Alarm LED
flashes two
times every 30
seconds.
Two quick beeps
every 30 seconds.
End of CO alarm life.
Trouble condition,
trouble beeps every 60
seconds.
Press the Test/Hush button and release.
This will silence the end-of-life signal for
up to three days. After three days, the
unit will resume end-of-life chirps. Hush
mode will silence the alarm ten times or
up to 30 days. After 30 days, the unit can
no longer be hushed. Replace the CO
alarm immediately. The unit will not
respond to CO.
Trouble/service
alarm
Red Alarm LED
flashes every 30
seconds.
One quick beep
every 30 seconds.
Unit is in trouble
condition.
Trouble condition,
trouble beeps every 60
seconds.
Replace batteries. If condition continues,
unit has malfunctioned. Replace
immediately. Unit will not respond to CO.
Error condition
Red Alarm LED
constantly on.
Constant alarm.
Very low battery or
unit malfunction.
Trouble condition,
trouble beeps every 60
seconds.
Replace batteries. If condition continues,
unit has malfunctioned. Replace
immediately. Unit will not respond to CO.
Test mode
Red Alarm LED
flashes with
beeps.
Four quick beeps,
5 seconds silence,
repeated once.
Normal operation
when Test/Hush
button is pressed.
Sensor test mode
CO not detected. Alarm for test purposes
only.
Tamper
Red Alarm LED
flashes every 30
seconds.
One quick beep
every 30 seconds.
Unit is in tamper
condition.
Trouble condition,
trouble beeps every 60
seconds.
Place alarm body back onto mounting
plate. If condition continues, unit has
malfunctioned. Replace immediately.
Maintenance tips
To keep your alarm in good working order:
•
Perform a CO alarm test once a week (see “Normal CO alarm
test” on page 3).
•
Vacuum the alarm cover once a month to remove
accumulated dust.
•
Never use detergents or solvents to clean the alarm.
Chemicals can permanently damage or temporarily
contaminate the sensor.
• Avoid
spraying
air
fresheners, hair spray, paint, or other
aerosols near the alarm.
•
Do not paint the unit. Paint will seal the vents and interfere
with proper sensor operation.
Move the CO alarm to a remote location, to prevent possible
damage or contamination of the sensor, prior to performing any
of the following:
•
Staining or stripping floors or furniture, painting or wall-
papering.
•
Using aerosols or adhesives.
WARNING:
Reinstall the CO alarm as soon as possible to assure
continuous protection.
The following is a list of substances that at high levels can
damage the CO sensor or cause temporary readings that are not
CO readings:
Ethylene, ethanol, alcohol, iso-propanol, benzene, toluene, ethyl
acetate, hydrogen, hydrogen sulfide, and sulfur dioxide.
Also most aerosol sprays, alcohol-based products, paint, thinner,
solvent, adhesive, hair spray, after shave, perfume, auto exhaust
(cold start), and some cleaning agents.
P/N 466-2393 • REV 00.15 • ISS 07DEC10
5 / 8
Draft
