Question about First Alert SA302 Dual System Smoke Detector

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Smoke alarm/carbon monoxide detector

I have a new smoke/carbon monoxide detector and after battery has been in for few hrs, it starts to bleep, once every few minutes, changed battery several times, it has a duracell plus in now but still bleeps, cannot find my instructions.

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  • k2k9 Nov 29, 2007

    Exact same problem!!! I put a brand new battery in the SA302 Dual System Smoke Detector, and within a couple of minutes it begins beeping and the "Smoke" light illuminates. It continues to beep all day long. The SA302 is in an extremely small cottage, and is in the only place not near a stove, furnace, or woodstove (it is in a corner of a bedroom). We cannot place the detector anywhere else in the house and be in conformity with fire department standards. Don't know what else to do!

  • dizy53 Jan 14, 2008

    yep same problem

  • Lynndie Jun 02, 2008

    Same problem but it just started. The townhouse is new and we have only been here since Christmas. I checked the battery and it is good but the beeping continues and the green light is not blinking. We didn't get any instructions for the smoke detector.

  • Anonymous Jul 24, 2008

    Solve it? I've thrown 3 units in the trash already, and now a 4th is acting up.

  • rcthurlow Oct 11, 2008

    Have the same problem. When I changed the Battery today it continues to beep.

  • hurricaneand Jan 02, 2009

    we have the same problem. Ours is about 3 years old but for no reason it just goes off (red light indicating smoke) which sets them all off in the house . Cant change the battery anymore. Does anyone know why this happens and/or have any solution for this?

  • Mu Shu Jan 06, 2009

    I have an electric smoke detector that keeps chirping, even though ITS POWER SUPPLY IS CUT OFF. What makes it chirp/beep when there are no batteries and no power???? Reminds me of a classic episode from Friends, where Phoebe smashed a smoke detector to bits and it still kept chirping.

  • Su04 May 11, 2010

    where is the solution?



1 Answer

I have a First Alert Smoke Detector Model SA 86RAC.When I changed the Battery today it beeps.How do I fix this problem?

Posted on Jul 17, 2008


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1 Answer

Beeping sound and message" battery low""

All smoke detectors need batteries often. The voltage must be 1.5 volts higher than what the voltage says on the battery used. Also electronics these days are touchy that you only use alkaline. So buy a new brand name alkaline that hasn't been on the shelve very long. Never use a used battery from another device in the house. Never buy the cheapest deal battery from a dollar store etc. Once the battery is replaced press the test button for 10 to 15 seconds to reset all. If you don't press the test button it may continue to beep or warn you. If you press the button just enough to test the alarm it may not reset properly. The longer 10 to 15 second test usually solves all issues.

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My Kidde carbon monoxide alarm keeps beeping every 30 seconds and we have put new batteries in it but it keeps beeping

Detecotrs have a limited lifespan of 5-7 years. So sounds like you need new one (Its not worth to buy just a sensor). Take a look on amazon Amazon com smoke alarm detector (watch out on reviews). I hope this was helpful. cheers

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Are there any reported problems with the Firez 21007624 carbon monoxide detector false alarms?

I do not know of any reported problems specific to the Kidde CO/smoke alarm, but I spent a significant part of my career servicing toxic gas sensors and can give you some general advice:

1- Most important: treat an alarm as a REAL alarm and DO NOT suspect that your alarm is a "false alarm". My experience has been that most "false alarms" ARE REAL and the source needs to be identified! With Carbon Monoxide detectors, it is usually a blocked vent for a gas fired appliance- a hot water heater, furnace, or oven. Call your fire department or a service professional to make sure that there is no carbon monoxide. They have portable detectors that will be able to double check your alarm.

My advice to you at this moment is to act as if you have a real alarm condition and do not place you or others in a life threatening situation. Ventilate the room/ apartment/house IMMEDIATELY!

I will post more after I send this because you may be in a life threatening situation!

Mar 22, 2011 | Kidde Firex 21007624 Ac Carbon Monoxide...

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How to fix detector

You don't mention how old the detector is. If it is more than 5 years old the detector may be beeping to indicate the end of its service life. A smoke detector can last much longer but carbon monoxide detectors have a limited life span. If putting in new batteries doesn't fix the problem then most likely you will need to replace it.

May 31, 2010 | Kidde Carbon Monoxide (KNCOBB) and Smoke...

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I have 7 year old smoke and carbon monoxide alarm...I have put a new replacement battery and detector is chirping every 15 seconds or so

Check the expiry date on this unit. The manufacturer recommends replacement usually after 5 to 7 years depending on the model.

You bought a Combo Gas/CO Detector for protection against the hazards of Gas and Carbon Monoxide poisoning. A new unit will give you the peace of mind you are looking for.

Visit my website for more information and view most Brands and Models of Carbon Monoxide and Combo Gas/CO Detectors.

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the batt is used for backup. Its beeping to get you to install a batt

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