Question about Kidde Nighthawk Combo Gas/co Detector

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Err. displaying replaced battery how do I reset?

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If the display shows "Err", push and hold the Peak Level button. Does the display change to "E09"? If so, then you have just been "had" by the grossly under-documented "planned obsolescence feature" called, rather matter-of-factly, "End of Life". This means that ~7 years after first being powered up, the unit will, BY DESIGN, cease to function, forcing you to buy a replacement. Would have been nice of Kidde to include THAT warning on the OUTSIDE of the package. Call their "Hotline" at 1-800-880-6788 and tell them what you think of that policy. If it is still under warranty (5 or 7 years depending on date of manufacture) they should replace it. In any event, buy another one; if they replace your first one you will have twice the protection. Not a bad thing. *Disclaimer: I am not a lawyer, despite the handle. Words to live by: "Every creative act results from a sudden cessation of stupidity." -Edwin H. Land, inventor of the Polaroid Land Camera"The problem can always be solved with the materials in the room." -My college Physics Lab Instructor

Posted on Feb 01, 2011

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Posted on Jan 02, 2017

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The manufacturer has written this in their manual for your unit...

"Err" displayed -battery icon may show any state of battery capacity. One quick beep every 30 seconds. Unit is Error condition

Replace batteries. If "Err" (or blank display) continues, unit has malfunctioned. Replace immediately.


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http://portalgb.knowledgebase.net/utility/downloadArticle.aspx?aid=294720

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