(I have carbon monoxide detectors that are not going off)

I have smoke detectors that are incorporated into my home alarm system. The other day, the one by my front door went off for no apparent reason, twice, and when I changed the batteries, it started alarming again immediately.

there was absolutely no reason for it, there were no open windows or doors nearby, it just went off. so, my alarm company replaced it. installed the new smoke detector yesterday and… it just went off again. completely different smoke detector.

there’s absolutely nothing in my house that could produce carbon monoxide, but I have separate CO detectors anyway that aren’t going off. there’s no smell, there’s nothing visible, and these are those electro optical photoelectric style ones.

  • Hikermick@lemmy.world
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    5 months ago

    Might be worth buying an infrared thermometer to see if there is wiring overheating in your walls. I’m not an electrician but i wonder if it’s something then can happen sporadically such as if there is something drawing a lot of power that turns on/off. There are inexpensive ones out there and they can be handy to have around.

  • Bedlore@aussie.zone
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    5 months ago

    I had trouble with them going off in humidity, they were past their expiry date so replacing them fixed the issue.

  • SzethFriendOfNimi@lemmy.world
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    5 months ago

    Depends on what kind of detector it is but alot of them use small amounts of radiation and a detector that triggers when the number of particles detected drops below some level.

    How smoke detectors work

    That being the case any particulate large enough to interrupt the particles could cause it to go off.

    For example high humidity misty water from a shower wafting over a detector placed over the bathroom door, etc.

  • mipadaitu@lemmy.world
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    5 months ago

    Call the fire department, they have detectors that they can use to look for gas leaks and other things that can set off a detector.

    You can also call your gas provider. One of those two should be able to track it down, it could be a lot of things, but two different smoke detectors going off in the same location is a huge red flag.

    Best case, you have something kicking up fine dust, worst case, you have a smouldering electric fire in your wall somewhere.

    Don’t panic, but also do not ignore this.

    • pelletbucket@lemm.eeOP
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      5 months ago

      The weird thing is, it alarmed three times in its current position, but when I changed the battery, it started alarming in my hands in a completely different room, which I already had two other smoke detectors in it that weren’t going off.

      and there’s no gas. I live outside Miami

      • bradorsomething@ttrpg.network
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        5 months ago

        Sounds like a bad unit, try replacing it. The fact it’s going off elsewhere and no other detectors go off says it’s the unit.

        I missed that you changed units, check your wires.

        If the new unit starts going off, you may have a switched wire between your signal (red) and your hot (black) that fried the unit.

          • bradorsomething@ttrpg.network
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            5 months ago

            Then some signal from the base unit alerts all units that one detector has gone off, to alarm the home. Either the base unit is sending a false signal, or some outside signal is mimicking the signal.

            Personally I’d install a standalone detector in that spot.

      • Fosheze@lemmy.world
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        5 months ago

        This makes it sound like it’s probably just a defective detector. Swap it with one that hasn’t been going off and see if that one starts going off too. If it doesn’t then odds are something just failed in it.

        You could also just try blowing some air through it to blow out any dust. But it shouldn’t be that dusty after only a year so I’m still leaning towards defective.

    • Philote@lemmy.ml
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      5 months ago

      I second the dust. Dust can collect on the sensor and trigger the alarm. You can try vacuuming or using a compressed air cleaner, or just replace.

  • Bertuccio@lemmy.world
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    5 months ago

    Are they networked? Mine are somehow connected and the one that beeps doesn’t always seem to be the one that detected the issue.

    • pelletbucket@lemm.eeOP
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      5 months ago

      they are networked, wirelessly, but one won’t set another off. they will set the base station off, as if my burglar alarm has been tripped. also, my system will tell me exactly which smoke detector went off

  • Bytemeister@lemmy.world
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    5 months ago

    Some newer (in the last 10 years) smoke detectors use an infrared sensor to detect fire as well as smoke, and it may be going haywire off a reflection of the sun, or intense heating of a spot within its detection area.

    If you can, borrow a FLIR or infrared camera and check the area when the detector goes off.

    If you post your model of smoke detector, it would be easier to tell if it has this feature.

  • pelletbucket@lemm.eeOP
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    5 months ago

    omg 😭😭😭 The new detector went on off in the living room where the old one did. switched it to the kitchen, put the kitchen detector in the living room, and the new one went off in the kitchen. wtffff

    • fulcrummed@lemmy.world
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      5 months ago

      Sorry, trying to follow here. Three locations: front door, kitchen and living room. 4 detectors: original front door, new front door, kitchen and living room?

      Original front door went off in situ and in the living room while holding it?

      New front door went off at front door. Swapped NFD with living room - NFD went off in living room.

      Moved NFD to kitchen and it went off in there too?

      Where are the K and LV detectors now? Have any of those gone off anywhere in the house? Are THEY functional? (Sorry if you already said, I’m trying to piece the bits together and mighta missed that)

  • qjkxbmwvz@startrek.website
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    5 months ago

    What country? AFAIK in the US you can’t make the batteries replaceable. If they are wirelessly linked they can have auxiliary batteries for that, but (I believe) that’s different than the main battery…

    EDIT: I seem to be thinking of California, maybe not all of US.

    • Otherbarry@lemmy.zip
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      5 months ago

      It’s the same here in New Jersey, or at least the city I’m in. Recently a fire inspector came by the condo building I was living in & failed ~ 60% of the units because they still had the old style replaceable battery smoke detectors. Apparently going forward we are/were supposed to be using sealed battery smoke detectors & replace them entirely every ~10 years when they stop working.

      EDIT: Not sure if that’s OP’s problem unless their alarm company is so cheap that they keep giving OP really old detectors to replace with.

  • Steve@slrpnk.net
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    5 months ago

    Try replacing the batteries. That’s often the reason for this type of thing.

    • pelletbucket@lemm.eeOP
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      5 months ago

      as stated, as soon as I replaced the battery it started alarming immediately so I replaced the entire detector and it’s still doing it

    • qjkxbmwvz@startrek.website
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      5 months ago

      AFAIK in the USA you can’t have theain batter be replaceable (I think an aux battery for wireless functions is allowed…).

      EDIT: I seem to be thinking of California, maybe not all of US.

  • Catoblepas@lemmy.blahaj.zone
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    5 months ago

    I’d call the fire department to ask them to come out and make sure that there’s not anything slow burning that’s hidden in the walls. Be sure to mention two separate smoke detectors have been going off. Even if that’s not what it is they’ll be fine with coming out to check.

    • KoboldCoterie@pawb.social
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      5 months ago

      Anecdotally, when I was a kid, we had an electrical issue wherein a short or something was causing wires to slowly melt through their jacket, inside the wall. It was triggering smoke detectors, but we couldn’t see or smell anything. Fire department came out and found it, but if we’d ignored it, it almost definitely would have been a huge house fire eventually. Definitely second this advice. It doesn’t cost anything to have them come look.

      • Max-P@lemmy.max-p.me
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        5 months ago

        In my first apartment, I had a smoke detector that was mains powered. The wire metals weren’t compatible and eventually the wirenuts burned and cut off power to half the room. The smoke detector’s wires were all burnt up. It never alarmed unfortunately so I only learned about it when half the room just went dark. That could absolutely have turned into an electrical fire.

        Definitely worth getting it checked.

    • pelletbucket@lemm.eeOP
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      5 months ago

      thing is, it’s the smoke detector farthest from my shower, and only the third time it went off was anywhere near a time that I had showered.

    • everett@lemmy.ml
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      5 months ago

      I thought of this one too. “Photoelectric” smoke detectors are a thing, and it’s good to know if that’s the kind you have.