One of our units was beeping every 20 seconds. I replaced the battery but it continues to beep. Now I have another unit doing the same thing. Help
Home Security - Kidde - Nighthawk Combo Gas/co Detector
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Answers & Comments
According to the Owners Manual if it's showing an error message or code, it should be returned to the manufacturer. For more info click on the link below which is your Owners Manual in a pdf format.
http://www.detectorsandalarms.com/images/pdf/Manual_KN-COEG-3_900-0113en.pdf
If the link doesn't work when you click on it, simply copy and paste it into your web browser.