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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-3
ERR & beeping...

Assembly # 900-0076-5 Date ofMFg: 2002, Aug 19 this product started to beep and display the letters Err.. We changed the batteries and reinsert into the wall electrical outlet but after 10 minutes it will start a beep and show the letters (err) again. What is wrong? What adjustment do we need to do?

Asked by G. Dagar on 12/08/2008 1  Answer

ManualsOnline posted an answer 15 years, 10 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

Jennifer posted an answer 15 years, 9 months ago

0 If you haven't already found the manual, here it is. I found this manual. Kidde_900-0076_manual.pdf
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