Once a minute, the alarm sounds 3
quick “chirps”, and the green light
flashes quickly three times.
Unit malfunction. Unit needs to be
replaced. Based on self-diagnostic
tests, the unit has detected a fault.
Units under warranty should be
returned to manufacturer for
replacement. See Chapter 8
“Limited Warranty” for details.
Once a minute, the Green light
flashes and the horn “chirps”.
Low battery warning. Battery is low
or missing.
Replace the battery, avoid
interrupting AC power.
If your Alarm does this... It means... You should...
Green light is OFF. Unit will not
alarm when you press the
Test/Silence button.
Unit may not be receiving
any power.
Check the AC power supply. Make
sure the power connector is secure-
ly attached to the alarm. Make sure
a fresh 9V battery is installed to
power the battery back-up•.
Green light flashes ON, once a
minute (horn is silent).
Alarm is not receiving AC power.
Unit is operating on battery back-up.
Check the AC power supply.
CHAPTER 8: TROUBLESHOOTING GUIDE
Alarm goes back into alarm after
you pressed the Test/Silence
button to silence an alarm.
Smoke and/or CO levels are still
potentially dangerous.
Refer to Chapter 3 “If Your Alarm
Sounds” for details on how to
respond to an alarm. If anyone is
feeling ill, EVACUATE your home
immediately and call 911.
If you have any questions that cannot be answered by reading this manual, call Consumer Affairs:1-800-323-9005.
*For a list of acceptable replacement batteries, see “Regular Maintenance.”
Alarm sounds frequently even
though no high levels of smoke or
CO are revealed in an investigation.
The Alarm may be improperly
located. Refer to “Where to Install
Your Alarm.
Relocate your alarm. If frequent
alarms continue, have home
rechecked for potential problems.
You may be experiencing an inter-
mittent smoke or CO problem.
ELECTRICAL SHOCK HAZARD. Turn off the power to the area where the Alarm is installed BEFORE remov-
ing it from the mounting bracket or checking any electrical connections! Failure to turn off the power first
may result in serious electrical shock, injury or death.
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