First Alert SA302 Dual System Smoke Detector Logo
Posted on Feb 22, 2011
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My alarm chirps every 30 seconds and i have removed the battery

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  • Posted on Feb 22, 2011
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This is a really odd situation. In that you have removed the battery and it still chirps, as if the battery was still installed, but was getting weak. So odd, that I took a look at the Owners Manual online to see what it had to say about it.

According to the Owners Manual this is a totally battery operated unit. When I read your problem/question, I thought it might also be a hardwired unit with a battery backup, in case of a power outage. But, that's not the case. I also learned that this detector can be used with a remote control.

In any event, the only thing I can think of is that the ionization feature may store some residual power, which causes the detector to chirp even if the battery is removed. I that's the case, it should weaken over time. But, in the meantime, the chirping is annoying.

In the meantime try silencing the alarm by Pressing the Test/Silence button on the alarm cover for at least 3-5 seconds. Hopefully, that will quiet it.

Also, the detector may need cleaning, as dust, dirt and lint accumulations can block the sensors.

Juts in case you've misplaced your Owners Manual, I have included a downloadable link, that you can print for future reference. http://www.firstalertstore.com/store/images/pdf/SA302CN-Dual_Sensor_Smoke_Detector.pdf

Hope this helps you.

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My hard wired smoke alarm has had a new 9 volt battery installed and even a second new one installed and is still chirping 4 times every 30 seconds.
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Only way around this is to cut any and all wires going to each smoke detector. They will still work because each has its own battery but there will be no more triggering of other units.
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http://www.kidde.com/Documents/User-Guide-900-0102-A-ENG.pdf Remember that smoke take presidence over C/O detection so notice whats going off first . LED Indicator Operation
Red LED
The red LED will flash as described below under the following
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--During smoke or CO alarm, with every beep
--During testing (same as alarm)
--Low battery, single flash with chirp
--End of product life, double flash every 30 seconds with chirp
--Unit error mode, single flash with chirp
--Unit error mode, a Fault Code is flashed every 30 seconds (can
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troubleshooting. Above is the user guide.
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I have the Firex i4618, after changing the battery it continues to chirp, have tried 2 new Duracell proper model batteries with same result.
Smoke Detecotrs have a limited lifespan of 5-7 years. So sounds like you need new one (Its not worth to buy just a sensor). Take a look on amazon Amazon: Amazon com Smoke Alarm. I hope this helped you. Have a nice day
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Replaced smoke alarm battery and also took down from ceiling--still chirping every 30 seconds. Any thoughts?
The chirping is definitely the low battery warning. Are you sure the battery you put in was good? I would definitely double check the battery using a meter.
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Jun 26, 2011 • Vacuums
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Chirps about every 30 seconds
The chip indicates a bad battery. I didn't look up your model but, if it is supposed to charge battery, which I'd doubt and, if it has a 10 year warranty on the battery, Kidde should replace the abtteryand/or unit, otherwisw I would think you would void your warranty. I'm sure you can find a repalcement battery if you had to and the chirping is really annoying so maybe you can remove the battery to make it stop, but you will have to leave it unhooked until you resolve your problem because it will still chirp if installed with no battery.
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Nighthawk carbon monoxide alarm model KN-COPP-3. ( ERR appears in the window, what does this mean ....
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
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Display Shows Alarm Sound Unit Status Recommended Action
Flashing dot None Normal battery-only operation - Plug in to AC as soon as
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"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

If this helps you resolve your problem, please consider giving a good rating and a quick thanks or good job.It will help me as well Thank you.
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Oct 26, 2010 • Computers & Internet
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Replaced 9 v batteries, units still chirping
This is the troubleshooting information from the kddie site. The problem is usually related to an older battery or improperly installed battery. You might also have to do a reset as described below. If battery and cleaning don't work, it might be time for a replacement - short money to keep you and your home safe.

  1. The battery may be loose, or improperly installed.
    Verify that a battery of the recommended type is securely installed. Make sure to use a battery with a use-by date no later than four to five years in the future. Check that the battery is snapped in completely so it cannot be shaken loose. It’s possible that battery connections may not be making good contact with the battery. Disconnecting and re-connecting the battery once or twice will likely fix this condition. On units with a front-load battery, be sure that the battery compartment door is closed completely as well. Loose white neutral wire can cause an echoing chirp. (From one unit to the next)
  2. The smoke alarm sensing chamber may be dirty.
    Dust and insects can collect in the sensing chamber of the alarm. An accumulation of dust in the sensing chamber can cause the unit to chirp. It is good practice to clean the smoke alarm when you change the battery. Static electricity from the ac quick connector attracts dust and can cause false alarms.

    Cleaning smoke alarms:
    To clean your alarm, remove it from the mounting bracket as outlined here. You can clean the interior of your alarm (sensing chamber) by using compressed air or a vacuum cleaner hose and blowing or vacuuming through the openings around the perimeter of the alarm. The outside of the alarm can be wiped with a damp cloth. After cleaning, reinstall your alarm, verify the green LED is on and test your alarm by using the Test Button. If cleaning does not restore the alarm to normal operation, the alarm should be replaced.

  3. Check environmental conditions:
    • Humidity, steam and condensation can cause false alarms. Causes of condensation are:
      • Extreme temperatures changes.
      • High ambient humidity.
      • Unit being installed in an uninsulated electrical box mounted on a ceiling beneath an attic. If this condition exists you’ll want to move the alarm. Click here to see the correct alarm placement in your user’s manual found in our Download Center.
    • Check to see if there is a cooling/heating register, a ceiling fan or an open window within 3 feet of the alarm. If there is, move the alarm away from the source of the increased airflow. Click here to see the correct alarm placement in your user’s manual found in our Download Center.
    • Check the temperature of the room. Smoke alarms operate at 40 degrees to 95 degrees Fahrenheit. Carbon monoxide alarms operate at 40 degrees to 100 degrees Fahrenheit.

  4. Reset the alarm.
    Some current model smoke alarms have a processor that retains certain error conditions, such as a weak battery. The error condition should reset when the battery is replaced but sometimes it does not and must be manually reset to clear the error.

    To reset an AC unit with a battery backup:
    Turn off the power to the smoke alarm at the circuit breaker.Remove the smoke alarm from the mounting bracket and disconnect the power. Remove the battery. Press and hold the test button for at least 15 seconds. The unit may chirp or alarm for a few seconds before going silent.Reconnect the power and reinstall the battery. The unit will chirp once when the power is restored and should not chirp afterwards.

    To reset a DC only unit:
    Remove the battery. Press and hold the test button for at least 15 seconds. The unit may chirp or alarm for a few seconds before going silent.Reinstall the battery. The unit will chirp when the battery is first connected but should not chirp afterwards.
  5. An electrical condition may be causing the power to the unit to be interrupted.
    If the AC power to the unit is interrupted, the unit will chirp when the power is restored. This could be caused by power surges.     If the chirping seems to occur at about the same time in the evening or morning, it could be due to a surge created when the power company switches electrical grids to meet demand. Check to see if the chirp (or chirping) occurs when something else in the house is turned on such as an exhaust or attic fan, a heater, etc. If the smoke alarm is connected to a circuit with such a device, the alarm may chirp when the other device is switched on. If this is the case and the device is plugged into a wall outlet, move it to another outlet on a different circuit. If it is a hardwired device, have an electrician investigate it. These conditions can be minimized by installing your alarms on a dedicated circuit in compliance with NFPA requirements.

  6. Replace the alarm.
    If none of these conditions exist and the suggestions don't alleviate the symptom, the alarm should be replaced. Age may be a factor. Smoke and heat alarms should be replaced every 10 years, and carbon monoxide and combination alarms should be replaced every 7 years. Most of our alarms have a 5 year warranty from date of purchase (check your user manual for details). A date code is stamped on the label attached to the back of the unit.

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My hard wired smoke alarm has had a new 9 volt battery installed and even a second new one installed and is still chirping 4 times every 30 seconds.

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