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Question About Nighthawk Carbon Monoxide Alarm KN-COPP-B
"ERR" shows even after replacing batteries as well...

"ERR" shows even after replacing batteries as well as the "chirp" Does this unit need to be replaced? Date of mfg. - 03-08-2007

Asked by Philip on 02/27/2015 1  Answer

ManualsOnline posted an answer 9 years, 1 month ago

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

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