Troubleshooting guide, Limited warranty – First Alert Model GCO1 User Manual

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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
or the Alarm has reached its end-of-life, 5 years.

Units under warranty should be returned to
manufacturer for replacement. See “Limited
Warranty” for details.

The horn “chirps” once a minute.

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 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.


Alarm goes back into alarm after you pressed the
Test/Silence button to silence an alarm.

Gas and/or CO levels are still potentially dangerous.

Refer to “If Your Gas/CO 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.”

The horn sounds constantly with no pattern and
cannot be silenced.

Unit malfunction. Unit needs to be replaced.

Units under warranty should be returned to
manufacturer for replacement. See “Limited
Warranty” for details.

Alarm sounds frequently even though no high levels
of gas or CO are revealed in an investigation.

The Alarm may be improperly located. Refer to
“Where to Install This Alarm.”

Relocate your alarm. If frequent alarms continue, have
home rechecked for potential problems. You may be
experiencing an intermittent gas or CO problem.


BRK Brands, Inc., ("BRK") the maker of First Alert


brand products warrants that for a period of five years from the date of purchase, this product will be free from

defects in material and workmanship. BRK, at its option, will repair or replace this product or any component of the product found to be defective during the warranty
period. Replacement will be made with a new or remanufactured product or component. If the product is no longer available, replacement may be made with a similar
product of equal or greater value. This is your exclusive warranty.

This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase is
required to obtain warranty performance. BRK dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way change
the terms and conditions of this warranty.

This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper voltage or
current, use contrary to the operating instructions, disassembly, repair or alteration by anyone other than BRK or an authorized service center. Further, the warranty
does not cover Acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included with this unit.

BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent prohibited by
applicable law, any implied warranty of merchantability or fitness for a particular purpose is limited in duration to the duration of the above warranty. Some states,
provinces or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so the
above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state or
province to province.

How to Obtain Warranty Service

Service: If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at 1-800-323-9005,
7:30 AM - 5:00 PM Central Standard Time, Monday through Friday. To assist us in serving you, please have the model number and date of purchase available when
calling. 25 Spur Drive, El Paso TX 79906

Battery: BRK Brands, Inc. make no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose with respect
to battery.

For your records, please record:

Date Purchased: _______________________________

Where Purchased: ____________________________________________

Date Installed: ____________/____________Month/Year

Replacement date is five years after installation:__________/__________


NOTE: End of Life Signal — Once the unit reaches the end of its
lifecycle, the malfunction signal will sound once a minute to indicate
the need to immediately replace the Alarm.

Printed in Mexico M08-0123-002 Q 01/08

First Alert


is a registered trademark of the First Alert Trust.