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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-3
My unit KN-COPP-3 is displaying a message that say...

My unit KN-COPP-3 is displaying a message that says "error". Please advise

Asked by Karen on 04/01/2015 2  Answers

ManualsOnline posted an answer 9 years, 8 months ago

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

harry posted an answer 9 years, 8 months ago

0 error 09
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