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Posted on Jan 02, 2017
SOURCE: The night hawk carbon monoxide
"L6" is actually "Lb" which means "Low battery". If you just bought the battery it may be defective. Try a different, known-good one. If it works OK, return the first one for a refund.Make sure you are buying brand-name batteries, EverReady, DuraCell, etc. not some cheap knock-off brand you may never have heard of. There is absolutely no quality control or minimum performance specifications for batteries that are marketed in the US and there is some REAL trash out there. If known-good batteries are not lasting at least a year in the unit, call the Kidde "Hotline" at 1-800-880-6788 and discuss the problem with their technical support section; you may be due a warranty replacement if the unit is still in warranty, usually 5 or 7 years depending on the manufacturing date. *Disclaimer: I am not a lawyer, despite the handle. Words to live by: "Every creative act results from a sudden cessation of stupidity." -Edwin H. Land, inventor of the Polaroid Land Camera "The problem can always be solved with the materials in the room." -My college Physics Lab Instructor
Posted on Feb 01, 2011
Lb (rather than L6) indicates a low battery. You need to replace the 9V battery in the carbon monoxide detector. The Err suggests an internal error but could just be due to the low battery.
If the Err persists after you replace the battery, press the peak level button (the right hand button) and check for an additional error code. If the Err message continues, replace the Night Hawk unit. If the unit is still under warranty, contact the manufacturer. Most of these units have a 10 year warranty. There are several models available from Kidde. The manual is available on the product site. For the KN-COPP-3 Night Hawk carbon monoxide detector, the documentation is available here: http://www.kidde.com/home-safety/en/us/products/fire-safety/co-alarms/kn-copp-3/ . Click on the Documents tab. The manual for the KN-COPP-3 999-0100 is here: http://www.utcccs-cdn.com/hvac/docs/2001/Public/06/User_Guide_KN-COPP-3_900-0100.pdf .
I hope this helps.
Posted on Dec 13, 2016
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"Err" displayed -battery icon may show any state of battery capacity. One quick beep every 30 seconds. Unit is Error condition
Replace batteries. If "Err" (or blank display) continues, unit has malfunctioned. Replace immediately.
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