Help Requests

Nighthawk Carbon Monoxide Alarm KN-COPP-3

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Can You Help With These Problems?

  • Posted by bobandpamlilly on Apr 16th, 2014 at 8:49am

    What does it mean when detector chirps and reads E
    What does it mean when detector chirps and reads EER. Press peak level button and it reads E09. Changed battery and hit reset and it won't reset
  • Posted by rockrh on Mar 27th, 2014 at 6:59pm

    How does one change the battery?
    How does one change the battery?
  • Posted by garfield47 on Mar 16th, 2014 at 2:14pm

    following the the replacement with a new battery
    following the the replacement with a new battery and pushing the test button the number is not Zero, but 888 with a dot below the third eight..few seconds later this 888 changes to Err. What is the reason?
  • Posted by mrspipeliner on Mar 15th, 2014 at 10:17pm

    What does chirping and err message mean
    What does chirping and err message mean
  • Posted by croc021324 on Mar 4th, 2014 at 11:48am

    chirping and err message on display for Nighthawk
    chirping and err message on display



    for Nighthawk Carbon Monoxide Alarm KN-COPP-3
  • Posted by caseycarter on Mar 3rd, 2014 at 6:34pm

    chirping and err message on display
    chirping and err message on display
  • Posted by fergusos on Feb 25th, 2014 at 10:57pm

    nighthawk alarm started chirpping every few second
    nighthawk alarm started chirpping every few seconds and when I read it, the display said err. What to do ?
  • Posted by jddecker959 on Feb 24th, 2014 at 9:23am

    have beep and err showing, have replaced battery t
    have beep and err showing, have replaced battery twice
  • Posted by wlopez2782 on Feb 23rd, 2014 at 3:42pm

    I have a error on screen?
    I have a error on screen?
  • Posted by tombytnar on Feb 10th, 2014 at 9:04pm

    what does l6 and 247 witha beep every 15 seconds?
    what does l6 and 247 witha beep every 15 seconds?
  • Posted by sfernandez1940 on Jan 23rd, 2014 at 5:26pm

    The unit was beeping, disconnected the unit and ch
    The unit was beeping, disconnected the unit and changed the battery. The screen still showing 888 or err after I installed the battery and beeps. I pressed test-reset button and continue to beep. Pressed the peak level button and no change. I just don't know what to do. Can you help me? Thanks. A gr…
  • Posted by shasronqcondon on Jan 17th, 2014 at 2:49pm

    how do I tell if the unit is working properly? I p
    how do I tell if the unit is working properly? I pushed the test button, the screen flashed the numbers 168 then an alarm sounded.
  • Posted by s_rlessmn on Jan 6th, 2014 at 7:42pm

    Err is on the screen and the alarm beeps every thi
    Err is on the screen and the alarm beeps every thirty seconds The problem is not the battery. How can I correct this problem?
  • Posted by s_rlessmn on Jan 6th, 2014 at 7:40pm

    Err is on the screen and the alarm beeps every thi
    Err is on the screen and the alarm beeps every thirty seconds. The battery is not the problem. How can I correct this problem?
  • Posted by windsorcarolc on Dec 24th, 2013 at 12:07am

    My nighthawk is beeping every 30 seconds the scree
    My nighthawk is beeping every 30 seconds the screen say 6nn on it what does it mean
  • Posted by kswhite710 on Dec 23rd, 2013 at 2:33pm

    Err has appeared on the screen and it keeps on bee
    Err has appeared on the screen and it keeps on beeping. Help!
  • Posted by eddgloria on Dec 21st, 2013 at 1:50pm

    Can this alarm go bad?? I've changed battery sever
    Can this alarm go bad?? I've changed battery several times, but after a while it beeps and shows a reading of "ERR" Please advise Ed Picotte
  • Posted by donnis on Dec 19th, 2013 at 5:04pm

    code e09
    code e09
  • Posted by sanchezct on Nov 28th, 2013 at 10:02pm

    nighthawk carbon monoxide alarm displays error on
    nighthawk carbon monoxide alarm displays error on screen changed batteries and still beats every 30 seconds
  • Posted by lfrcordova on Nov 19th, 2013 at 2:45am

    error message 8888
    error message 8888
  • Posted by mmc23915 on Nov 13th, 2013 at 9:40pm

    My alarm is beeping every 30 seconds with ERR in t
    My alarm is beeping every 30 seconds with ERR in the window. Pressing reset, changing the battery, unplugging...doesn't fix the beeping. Please advise.
  • Posted by pinkbs101 on Oct 28th, 2013 at 9:48pm

    How do you reset this carbon monoxide alarm after
    How do you reset this carbon monoxide alarm after replacing the battery
  • Posted by pinkbs101 on Oct 28th, 2013 at 9:35pm

    How do you reset carbon monoxide alarm after repla
    How do you reset carbon monoxide alarm after replacing battery
  • Posted by on Oct 24th, 2013 at 6:00am

    unit beeps every 25-30 seconds. pressed reset- bat
    unit beeps every 25-30 seconds. pressed reset- battery warning Lb does NOT show up. show Err on display.

    Thanks-
  • Posted by on Oct 12th, 2013 at 6:48pm

    E09, what does this mean?
    E09, what does this mean?
  • Posted by on Sep 21st, 2013 at 11:29am

    what does a blinking red dot mean? Thanks
    what does a blinking red dot mean? Thanks
  • Posted by on Sep 7th, 2013 at 3:38pm

    my alarm beeps every few seconds
    my alarm beeps every few seconds
  • Posted by Linda Tosh Slavin Brisbois on Aug 24th, 2013 at 1:32pm

    How do I change battery
    How do I change battery
  • Posted by ninawhite1 on Aug 24th, 2013 at 11:59am

    Model 900-0056-01 does this unit need a battery fr
    Model 900-0056-01 does this unit need a battery from time to time?
  • Posted by kukuchkakj on Apr 30th, 2013 at 10:10pm

    my kn-copp-3 started beeping and now it wont stop.
    my kn-copp-3 started beeping and now it wont stop. Put in new battery and still beeps
  • Posted by Stella Filonowicz on Apr 27th, 2013 at 5:31pm

    alarm keeps beeping with err
    alarm keeps beeping with err
  • Posted by candymcneill on Apr 23rd, 2013 at 8:33am

    the manual does not answer the question about why
    the manual does not answer the question about why it keeps beepeing with the Err message- is this a faulty product?
  • Posted by cfmilder on Mar 31st, 2013 at 5:47am

    it keeps beeping and reads error but we changed th
    it keeps beeping and reads error but we changed the battery
  • Posted by jsorensen0428 on Mar 23rd, 2013 at 7:50am

    What does error code 9 mean?
    What does error code 9 mean?
  • Posted by mbh1010 on Mar 22nd, 2013 at 12:50pm

    why dos keep beeping? It reads 888
    why dos keep beeping? It reads 888
  • Posted by reaves400 on Mar 11th, 2013 at 3:08pm

    alarm continues to beep and show Err. after new ba
    alarm continues to beep and show Err. after new battery is installed. i have taken unit outside for fresh air and tested new battery. when you press test button you get 888 then Err and beep. has the alarm gone bad?
  • Posted by Pam Floyd on Feb 19th, 2013 at 7:00pm

    What does err and beeping mean
    What does err and beeping mean
  • Posted by asdunn on Feb 8th, 2013 at 2:58pm

    What does Err mean and the constant beeps?
    What does Err mean and the constant beeps?
  • Posted by jdfelps on Feb 1st, 2013 at 5:10pm

    My KN-COPP-3 2705 carbon monoxide detector reads 8
    My KN-COPP-3 2705 carbon monoxide detector reads 888 and beeps. Replacing battery and pressing Test-Reset does not help. After a while it reads Err.
  • Posted by iliana262 on Jan 20th, 2013 at 11:35pm

    my Nighthawk KN-COPP-3 carbon monoxide alarm is go
    my Nighthawk KN-COPP-3 carbon monoxide alarm is going off. I pressed the test-reset button to see if maybe it's a low battery issue but no LB comes up just 888. - what does that mean? Thanks
  • Posted by the.rosales on Jan 4th, 2013 at 3:51pm

    is 214 a safe number for my home, carbon monoixide
    is 214 a safe number for my home, carbon monoixide
  • Posted by lgood on Dec 19th, 2012 at 8:44pm

    I changed the battery and I still get the beep eve
    I changed the battery and I still get the beep every 30 seconds. Is this

    a carbon monoxide problem ? How do I get it to stop ?
  • Posted by lisabush30 on Dec 11th, 2012 at 8:06pm

    I am getting an error message on the alarm but I a
    I am getting an error message on the alarm but I already changed the battery.
  • Posted by tauvincent on Dec 10th, 2012 at 9:22pm

    Unit continually beeps every 30 seconds. Changed b
    Unit continually beeps every 30 seconds. Changed battery, push reset, disconnectedpower but nothing works. Window err then 888 then back to err till I push the button. What next?
  • Posted by Joanne Peterson on Nov 22nd, 2012 at 10:31am

    how do i change the battery
    how do i change the battery
  • Posted by bpierson46 on Nov 21st, 2012 at 9:33pm

    I AM GETTING A DISPLAY OF "ERR". WHEN I HIT THE B
    I AM GETTING A DISPLAY OF "ERR". WHEN I HIT THE BUTTON IT SAYS "E09". IS THE UNIT NO GOOD ANY LONGER?



    THANK YOU
  • Posted by lonniehammond on Nov 6th, 2012 at 1:57pm

    changed battery. beeps twice then goes to once eve
    changed battery. beeps twice then goes to once every 30 seconds and shows err. tried everything i know to and goes back to the above. any suggestions?
  • Posted by marycassell3 on Nov 1st, 2012 at 7:04pm

    What does Err code with a beep mean? Changed the b
    What does Err code with a beep mean? Changed the battery but still showing code & beeping.
  • Posted by Tyler Henneman on Oct 5th, 2012 at 3:50pm

    Im getting an Errrrr and the alarm is going off. I
    Im getting an Errrrr and the alarm is going off. I put a fresh battery in and that did not help.
  • Posted by kansalyc on Oct 4th, 2012 at 12:47pm

    My Nighhawk model # KN-COPP-3 Carbon Monoxide dete
    My Nighhawk model # KN-COPP-3 Carbon Monoxide detector showed "Err" message in the window. When I replaced the battery, it briefly shwed "888" but when I turned over the detector it went back to "Err" and a beep every 25-30 sec. What's wrong and how do I fix it?
  • Posted by gloria on Jul 23rd, 2012 at 10:23am

    Hi, like other comments, I put in the new battery
    Hi, like other comments, I put in the new battery and the chirp continues plus the ERR message appears. Not sure what's happening. Thanks!
  • Posted by rand_michael on Mar 30th, 2012 at 8:18pm

    changed battery,now it keeps beeping and states er
    changed battery,now it keeps beeping and states error message.wehat is wrong
  • Posted by cop1mark on Feb 25th, 2012 at 4:44pm

    i put in a new duracell battery and err. still app
    i put in a new duracell battery and err. still appears after I hit reset
  • Posted by pictchfire on Feb 21st, 2012 at 8:52am

    What does L6 mean on the display/
    What does L6 mean on the display/
  • Posted by jpilalis on Jan 25th, 2012 at 5:03pm

    What does it mean when err message is diplayed and
    What does it mean when err message is diplayed and it beeps continuously
  • Posted by jcarey3091 on Jan 1st, 2012 at 1:42pm

    The monitor comes up with an Error on the display
    The monitor comes up with an Error on the display and beeps every few minutes
  • Posted by jbartz2 on Jan 1st, 2012 at 8:28am

    err comes up and it beeps every few seconds. If I
    err comes up and it beeps every few seconds. If I press the peak level is displays E09.
  • Posted by brookie44 on Dec 21st, 2011 at 3:06pm

    what battery type should I use?
    what battery type should I use?
  • Posted by pkleclaire on Dec 4th, 2011 at 10:51pm

    are carbon monoxide model KN-COPP-3 started to be
    are carbon monoxide model KN-COPP-3 started to beeb and had err displayed in the window what does that mean
  • Posted by kennethgoisovich on Nov 28th, 2011 at 11:03am

    My carbon monoxide alarm model number kn-copp-3 ,
    My carbon monoxide alarm model number kn-copp-3 , is reading Err,I'cant figure out how to install a new battery and get it reset and off the error code? can you help me over the net or do I need to talk to a tech??

    thanks

    Ken goisovcih
  • Posted by specialkitty50 on Nov 27th, 2011 at 3:28pm

    What do I do when my CO detecter displays ERR?
    What do I do when my CO detecter displays ERR?
  • Posted by ktyner19 on Nov 11th, 2011 at 12:02am

    Keeps coming up Err - what does this mean?
    Keeps coming up Err - what does this mean?
  • Posted by tlbarnhart32 on Nov 3rd, 2011 at 10:16pm

    keeps coming up err, what should I do?
    keeps coming up err, what should I do?
  • Posted by warrenspiegelman on Oct 18th, 2011 at 5:14pm

    Why does Err display
    Why does Err display
  • Posted by blavery447 on Oct 7th, 2011 at 11:55am

    Error with beep each 25 seconds
    Error with beep each 25 seconds
  • Posted by janeotr on Aug 31st, 2011 at 9:26pm

    what is "Unit Error"?
    what is "Unit Error"?
  • Posted by lrbaker on Aug 26th, 2011 at 4:25pm

    alarm is going off
    alarm is going off
  • Posted by pat-ron on Aug 20th, 2011 at 2:30pm

    MY DETECTOR'S DISPLAY SAYS "err" I HAVE REPLACED
    MY DETECTOR'S DISPLAY SAYS "err"

    I HAVE REPLACED THE BATTERY AND STILL GET INTERMITANT CHIRPS ABOUT EVERY 30 SECONDS.
  • Posted by elephantheart1 on Jul 3rd, 2011 at 8:08pm

    Can't clear ERR
    Can't clear ERR
  • Posted by 2chattycathy on Apr 23rd, 2011 at 2:03am

    Nighthawk Carbon Monoxide Alarm KN-COPP-3
    Beeping every 30 seconds, already replaced battery. What do I do?
  • Posted by anna.peters on Apr 7th, 2011 at 12:08pm

    code
    what is err
  • Posted by dkirschnik on Mar 27th, 2011 at 10:26pm

    err
    err
  • Posted by chrisfuentes on Mar 20th, 2011 at 12:08pm

    Alarms reads err
    My NightHawk continues to beep every 30 seconds and continues to read err. We have tried everything encluding putting a new battery. The only way it will stop beeping is to leave the battry out.

    We have pushed the reset button and also the peak button. Please help us.

    Many Thanks,

    Chris and Lorna…
  • Posted by smitty1451 on Feb 20th, 2011 at 3:57pm

    Error message
    Getting an error message. Replaced the battery but still getting the message. I have the KN-COPP-3 model
  • Posted by anitsir1972 on Feb 9th, 2011 at 6:59pm

    need help
    ERROR MESSAGE
  • Posted by frank69 on Jan 27th, 2011 at 12:10pm

    Err message
    beeps every 25 seconds shows err on window
  • Posted by xammot on Jan 23rd, 2011 at 7:45pm

    nighthawk carbon mono alarm
    has err message
  • Posted by trophybass2 on Jan 20th, 2011 at 9:44pm

    manual
    Err message
  • Posted by shulman17 on Jan 16th, 2011 at 2:32pm

    KN-COPP-3
    Units chirps and displays "Err". I replaced the battery. "Err" won't go away and it still chirps, whether plugged into an outlet or not.
  • Posted by bennett2390 on Jan 11th, 2011 at 6:49pm

    model KN Copp-3
    devise says Err .I put new batt and plugged it in and still says Err. Please help me---Thank you ---Bennett --- email is Bennett2390@aol.com
  • Posted by tonyd39 on Jan 9th, 2011 at 9:09am

    error message on screen
    error message on screen changed battery still have error message
  • Posted by nenagirl50 on Dec 6th, 2010 at 9:40pm

    alarm goes off
    reading says L6then 232 back and forth when plugged in
  • Posted by tim-bishop on Dec 1st, 2010 at 10:42pm

    Why and how do I fix it
    My kn-copp-3 started to chirp and say err on the screen. so I replaced the battery and still have the same problem. Could you explain how to solve please ?
  • Posted by sjjavurek on Nov 23rd, 2010 at 5:29pm

    err mesage new battery , still chirps?
    same as above what is solution ?
  • Posted by dpson on Nov 9th, 2010 at 10:31am

    #KN-copp-3
    replaced battery it is still beeping how

    do we stop it.
  • Posted by jlagator on Nov 3rd, 2010 at 10:05am

    err
    replaced battery, err code still remains on display and beeper sound continues
  • Posted by c4n on Sep 17th, 2010 at 6:01am

    alarm
    a;arm is sounding, window says Err.
  • Posted by kim_hiatt on Jul 1st, 2010 at 4:16pm

    low battery
    new battery was installed- how do you reset it?
  • Posted by cpwalton1 on May 16th, 2010 at 8:58am

    using without the battery
    product beeps and reads 888
  • Posted by jjbevacqua on Apr 13th, 2010 at 11:19am

    nighthawk carbon monoxide alarm #KNcopp3
    Upon installing fresh batteries unit shows Errr and continues to beep intermittently
  • Posted by hookerrk on Mar 19th, 2010 at 8:50am

    where to locate dector
    need to install dector in proper location
  • Posted by dionned on Mar 11th, 2010 at 9:24am

    Nighthawk Carbon Monoxide Alarm KN-CCPP-B
    Unit ERR, intermittent audible alarm sounds every 30 seconds. What does this mean?
  • Posted by karenk on Mar 2nd, 2010 at 10:52am

    error message with KN-COPP-3
    Product is a Nightwak KN-COPP-3 . The alarm beeps every 40 seconds or so and there is an error message. I tried a new battery but the problem persists. I also pressed the test reset button but that did not solve the problem. Please advise. Thank you.
  • Posted by beramirez on Feb 10th, 2010 at 1:14pm

    Nighthawk Carbon Monoxide Alarm
    Error lite in lighted area what do I do to get rid of it?
  • Posted by beramirez on Feb 10th, 2010 at 1:13pm

    Nighthawk Carbon Monoxide Alarm
    Error lite in lighted area what do I do to get rid of it?
  • Posted by on Feb 5th, 2010 at 12:46pm

    why does it...
    ...keep beeping even outdoors?
  • Posted by bettydaye on Feb 5th, 2010 at 10:26am

    What does err...
    ...mean and how to correct it
  • Posted by bettydaye on Feb 5th, 2010 at 9:57am

    What does ERR...
    ...mean and how to correct it.
  • Posted by on Feb 4th, 2010 at 6:19pm

    err in window...
    ...
  • Posted by on Feb 4th, 2010 at 10:13am

    beeps all the...
    ...time

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