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2. Carbon Monoxide Alarm: What To Do When the Alarm Sounds
Carbon monoxide (CO) alarm pattern is four quick beeps with voice “Warning! Carbon Monoxide”
repeating every 5 seconds. The red LED blinks in time with alarm pattern.
WARNING: CARBON MONOXIDE ALARM ACTIVATION INDICATES THE PRESENCE OF
CARBON MONOXIDE CO AT HIGH CONCENTRATIONS WHICH CAN KILL YOU.
1 Operate the Test/Hush® button. NOTE: Pressing the button on the initiating alarm unit (green LED
flashing every second) will silence the alarm notification, including all interconnected units. If the unit
goes into alarm mode again within six minutes, it is sensing high levels of CO which can quickly become
a dangerous situation.
2 Call your emergency services (Fire Department or 911). EMERGENCY PHONE #:___________
3 Immediately move to fresh air — outdoors or by an open door / window. Do a head count to check
that all persons are accounted for. Alert small children in the home as well as anyone else that might
have difficulty recognizing the importance of the alarm sounding or that might have difficulty leaving
the area without help. Do not reenter the premises nor move away from the open door/window until
the emergency services responders have arrived, the premises have been aired out, and your alarm
remains in its normal condition.
4 After following steps 1-3, if the alarm reactivates within a 24 hour period, repeat steps 1-3 and call a
qualified appliance technician to investigate sources of CO from fuel burning equipment and appliances,
and to inspect for proper operation of equipment.
If problems are identified during this inspection, have the equipment serviced immediately. Note any
combustion equipment not inspected by the technician and consult the manufacturer’s instructions,
or contact the manufacturer directly for more information about CO safety and the equipment. Make
sure that motor vehicles are not, or have not been, operating in a garage attached or adjacent to the
residence. Never restart the source of a CO problem until it has been corrected. Never ignore the sound
of the alarm!
NOTE: See Section RECOGNIZING NUISANCE ALARMS, for nuisance alarm situations.
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