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Question About Nighthawk Carbon Monoxide Alarm KN-COP-DP
err. code...

my Nighthawk KN-COP-DP is giving off "err." on the display. What does this mean?

Asked by R on 04/03/2010 2  Answers

ManualsOnline posted an answer 14 years, 6 months ago

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

julie posted an answer 14 years, 3 months ago

2 Keeps beeping and saying error ..what do i do?
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