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Question About Nighthawk Carbon Monoxide Alarm None
Code 229, 230 & Err......

After installing a new battery and resetting unit, these codes appear. What are they and can we get a list of what the codes mean.

Asked by Joe on 01/02/2009 1  Answer

ManualsOnline posted an answer 15 years, 9 months ago

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

Joe posted an answer 15 years, 9 months ago

0 Can we get a list of what the codes mean - please.
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