When the batteries have been inserted the display shows 888. after a few seconds an Err message is displayed followed by a single beep. The Err message stays and a single beep is repeated every 20-30 seconds. Help
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Readings You May See When Unit is AC Powered Display Shows Alarm Sound Unit Status Recommended Action Steady "Err" "Chirp" every Unit malfunctioning when Call KIDDE customer and flashing dot 30 seconds AC powered service at 1-800-880-6788 Readings You May See When Unit is on Temporary Battery Backup Display Shows Alarm Sound Unit Status Recommended Action Flashing dot None Normal battery-only operation - Plug in to AC as soon as unit will show reading only if it possible to conserve battery senses CO Flashing dot and "Chirp" every Unit malfunctioning when Call KIDDE customer "Err" 30 seconds battery powered service at 1-800-880-6788
Hope this helps. Manual is here: http://www.detectorsandalarms.com/images/pdf/Manual_KN-COPP-3_900-0100en.pdf
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If the display shows "Err", push and hold the Peak Level button. Does the display change to "E09"? If so, then you have just been "had" by the grossly under-documented "planned obsolescence feature" called, rather matter-of-factly, "End of Life". This means that ~7 years after first being powered up, the unit will, BY DESIGN, cease to function, forcing you to buy a replacement. Would have been nice of Kidde to include THAT warning on the OUTSIDE of the package. Call their "Hotline" at 1-800-880-6788 and tell them what you think of that policy. If it is still under warranty (5 or 7 years depending on date of manufacture) they should replace it. In any event, buy another one; if they replace your first one you will have twice the protection. Not a bad thing.*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
I took the following from the Kidde website. They only answer the phone Mon-Fri, from 8-5, EST. I checked it out because my almost new Kidde CO detector is showing an Error code. The next time your carbon monoxide alarm has ERR on the display, push and hold the Peak Level button.You will see an E and an O followed by a number.Contact our hotline at 1-800-880-6788 and provide us the error code, along with the model number, assembly number and date of manufacture from the back of your unit.If your unit is under warranty, a replacement will be mailed to you.
Detecotrs have a limited lifespan of 5-7 years. So sounds like you need new one (It's not worth to buy just a sensor). Take a look on amazon: Amazon com Carbon monoxide detector (watch out on reviews). I hope this was helpful. cheers
YES!!!! If this unit is working properly you should not be in the house. Maximum allowable safety level for an 8 hour period is 50! If you think it's working properly call the fire department! This will cause dizziness,nausea,etc. Let your fire department find the problem! If you don't believe me follow this link to owner's manual but do it quickly: http://www.kiddeus.com/utcfs/ws-384/Assets/KN-COB-B(9CO5)en.pdf