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CHAPTER 7: Troubleshooting Guide
Problem... This means... You should...
Green light is OFF. Unit will
not alarm when you press
the Test/Silence button.
Unit may not be
plugged all the way
in, or receiving
power.
Gently push unit all the way into outlet.
Make sure it is not plugged into an outlet
controlled by a switch.
Unit “chirps” about twice
a minute. Green light and
Yellow lights are ON.
Red light FLASHES.
Digital Display shows “Err.”
Unit malfunction.
Unit needs to be
replaced.
Units under warranty should be returned to
manufacturer for replacement. See Chapter 8:
“Limited Warranty” for details.
CO Alarm goes back into
alarm 4 minutes after you
press the Test/Silence
button.
CO levels still
indicate a
potentially
dangerous situation.
Refer to Chapter 3 “If Your CO Alarm Alarms”
for details on how to respond to an alarm. If
anyone is feeling ill, EVACUATE your home
immediately.
CO Alarm alarms frequently
even though no high levels
of CO are revealed in an
investigation.
The CO Alarm may
be improperly
located. Refer to
“Where to Install
Your CO Alarm.”
Relocate your alarm. If frequent alarms
continue, have home rechecked for potential
CO problems. You may be experiencing an
intermittent CO problem.
If you have any questions that cannot be answered by reading this manual, call our
Consumer Affairs Department at 1-800-323-9005.