Nighthawk carbon monoxide alarm model number KN-COPP-3. Date of manufacture 1-8-2007. It is beeping showing 888 & ERR. Cleaned the unit & replaced the battery. Still showing same messages. Suggestions please. Thank you.

Asked by Jane on 01/13/2015 1  Answer

ManualsOnline posted an answer 9 years, 2 months ago

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

Add Your Answer

Please Note: Do not submit personal information as it will be displayed online.