Guest Reece Posted June 23, 2020 Report Share Posted June 23, 2020 Hello, Yesterday at about 5:30pm my fire alarm in my upstairs bedroom went off. It’s the Kidde fire alarm. It went off for about 20 seconds, 3 times in a row but set off all the alarms in my house. It is hard wired with a battery back up so I took it down and I’m in the process of changing batteries but I’m just confused because it never chirped for low battery. I had all the windows in my house open so I’m wondering if something outside triggered it but I can’t understand what has made it go off. Thanks Quote Link to comment Share on other sites More sharing options...
green-foam Posted June 23, 2020 Report Share Posted June 23, 2020 Since the windows were open, and your smoke alarm has never gone off before, the probability is that a "pocket of smoke" was blown in and that is what the detector detected, it was doing its job. If you are changing the batteries, its a good idea to write the date on them too. Quote Link to comment Share on other sites More sharing options...
Guest Guest Posted July 28, 2020 Report Share Posted July 28, 2020 On 20/09/2018 at 08:57, Guest Madelline said: Ours went off twice in the middle of the night for about 10 seconds each time. We blew on it and a freaking spider jumped out. So yeah, might want to see if there’s dust or spiders around it... Same here, 02:30 - 03:38 - 05:00 eventually I pulled all three heads and inspected them, spider by this time had dropped to the floor out of one of the units and was making a break for it. Quote Link to comment Share on other sites More sharing options...
Guest Roxana Posted August 29, 2020 Report Share Posted August 29, 2020 We moved in an old house in a very remote area in New Hampshire and the 2 alarms when off at the same time in the middle of the night. Lasted about 20 sec and than it stopped by itself. teh alarm is "First Alert" smoke Nd carbon monoxide alarm with voice. I only heard "evacuate"... the light button next to smoke was red for both of them. Terribly frightening. my 6 year old is crying... I tested the alarm by pressing the test button and it went off again similarly for about 20 sec both upstairs and downstairs. Should i do something about this? Should I be concerned? we moved in the house 2 days ago... this is the first time it happened. Any thoughts or advice are very much appreciated. Thank you. Quote Link to comment Share on other sites More sharing options...
green-foam Posted August 29, 2020 Report Share Posted August 29, 2020 Both would have sounded as they are interlinked. Believe it or not, it's not uncommon for smoke alarms to false alarm (Although in theory they shouldn't, it does happen) Sadly there is not possible to say "do xyz and you will be fine" as it depends on why one went off. (Being interlinked, one will cause the other to activate) But you should check the age of the detectors, they should be changed when they are 10 years old, also if they have standby batteries, how old are they? You should also clean them once a year (Vacuum cleaner and the crevice tool if you have) Quote Link to comment Share on other sites More sharing options...
Guest Ketan Bharucha Posted September 8, 2020 Report Share Posted September 8, 2020 Hi, Smoke Detector went off around 1AM for 3 sec and then become normal. Same thing happened 3weeks ago as well. No other issue found. Annoying as when it happens, triggers all alarms. Each room has it own detector. Please suggest. Quote Link to comment Share on other sites More sharing options...
Guest Imnotl1lly Posted December 28, 2020 Report Share Posted December 28, 2020 OK. My fire alarm keeps going off. At first it was going well. But for 4 days it's been going off at MIDNIGHT. Yep, you heard that right. Quote Link to comment Share on other sites More sharing options...
Harry Posted December 30, 2020 Report Share Posted December 30, 2020 With it getting colder at night your backup battery is probably running low giving you a low battery warning. Or your alarm is getting too old (more than 10 years). Step 1: check the age of the alarm. You can find the date on the side or back of your smoke alarm. If it's older than 10 year, you need to replace. Step 2: make sure the backup battery has enough power left Step 3: if none of the above, vacuum the alarm thoroughly to get rid of spider webs etc Step 4: if the above has not helped replace the alarm Harry Quote Link to comment Share on other sites More sharing options...
green-foam Posted December 30, 2020 Report Share Posted December 30, 2020 Is it a fire alarm or smoke alarm? (They are NOT the same) Quote Link to comment Share on other sites More sharing options...
Guest AZoldtoys Posted August 17, 2021 Report Share Posted August 17, 2021 We live in a two year old home, there are 8 hard wired smoke detectors in the house and ADT alarm smoke detectors The hard wired smoke detector in the garage went off around 9pm, checked the entire house no smoke or smell of carbon monoxide, I pushed the silence button, it stopped for about two minutes and then went off again, I pushed the silence button again and it stopped for about two minutes, then went off, it sets off 4 other detectors I replaced the battery with no luck, I unplugged it and removed the battery, that resolved the issue, off to buy a new one in the morning, hope that resolves the problem Quote Link to comment Share on other sites More sharing options...
green-foam Posted August 17, 2021 Report Share Posted August 17, 2021 You could have taken the smoke detector down and cleaned it with a vacuum cleaner (Clears out any dust etc) If you are going to change it, as it is interlinked get another one of the same brand, if you don't none of them may work at all. Carbon monoxide does not smell. Quote Link to comment Share on other sites More sharing options...
Guest Maggie Posted November 16, 2021 Report Share Posted November 16, 2021 Hi, Reading all the above and realising I am not alone. Sebson interlinked alarm went of for a good wee while then started to bleep. Nothing at all to indicate smoke. Any ideas? It stopped itself after bleeping a few times. Quote Link to comment Share on other sites More sharing options...
green-foam Posted November 18, 2021 Report Share Posted November 18, 2021 If it has now stopped bleeping, and still works when you press the test button, you have had a false alarm. Quote Link to comment Share on other sites More sharing options...
Guest Hi, I have a SC9120B. Posted June 19, 2022 Report Share Posted June 19, 2022 It went off about an hour ago, we were asleep. Beeped maybe 4 times and stopped automatically. CO is not blinking, just the part where you can test it was blinking red upstairs and downstairs but basement was green. Again, all stopped by itself and we hit test on the main and upper and it’s all now green. Do you think it’s ok? Quote Link to comment Share on other sites More sharing options...
green-foam Posted June 22, 2022 Report Share Posted June 22, 2022 If it has now stopped bleeping, and still works when you press the test button, you have had a false alarm. Quote Link to comment Share on other sites More sharing options...
Guest False Alarm Posted June 29, 2023 Report Share Posted June 29, 2023 My fire alarm just went off making the laudest noices and robot saying fire repletetly. Thank God there's no fire. Humidity is at 79. Could that humidity triggered the false Alarm? Quote Link to comment Share on other sites More sharing options...
green-foam Posted July 3, 2023 Report Share Posted July 3, 2023 Possibly. I would have asked more questions, but as you asked last week, and the probability of you replying is almost zero, it seems pointless. (It's just the way this forum works.) Quote Link to comment Share on other sites More sharing options...
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