Question about Kidde Nighthawk Combo Gas/co Detector

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1 chirp every 30 seconds

I have a Kidde nighthawke model # kn-cosm-ibca smoke and co alarm. It beeps only once a day ...usually 2-3 a.m.!!! I pull the battery and put back in and it seems to work fine for another 24 hrs. Any help please.

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It is not the battery problem, you need to get a replacement.
the circuite board is bad.

Posted on Dec 02, 2008

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Normally, that means the battery(s) need changing.. But, hundreds people have had problems with this combo detector, it's hard to predict what it is.

But, as I said earlier, "Normally that means the battery(s) need changing." The keyword here is "Normally".

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1. Change batteries.
2. Clean it.
3. Swap it with another location if you can.

If it still does not work properly consult the local fire dept. for free.

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I took the following from the Kidde website. They only answer the phone Mon-Fri, from 8-5, EST. I checked it out because my almost new Kidde CO detector is showing an Error code.
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Nov 10, 2008 | Kidde Nighthawk Combo Gas/co Detector

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