All the smoke detectors in my house went off at once (no fire)...? - LotusTalk - The Lotus Cars Community
 
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Old 10-17-2005, 09:09 AM   #1 (permalink)
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All the smoke detectors in my house went off at once (no fire)...?

I called the fire dept & they said it must have a been a power surge... something to do with the big rain and hail storm that just went through (it happened during the 10 minutes it was dumping outside). They told me to call an electrician.

I called an electrician, but, before they call to say they're coming, does anyone know how to reset these suckers so I don't have to pay for someone to come out for something really simple (if that's the case)? They (the smoke detectors) were on the house when I moved in, so I don't have the manuals. I tried pulling the battery out of one & replacing it before reconnecting it to the wall, but they go off immediately as soon as plugged in. They aren't connected to a security system or anything.
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Old 10-17-2005, 09:12 AM   #2 (permalink)
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Some systems have a feature that if the bettery gets low in them, one or all of them start going off. I would just replace the batteries in all of them. There should be a red test button which will also reset.

Get some 9volts and a ladder and get going!
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Old 10-17-2005, 09:49 AM   #3 (permalink)
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I'm thinking ghosts.
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Old 10-17-2005, 10:06 AM   #4 (permalink)
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Are they just battery powered or do they run off the house current?
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Old 10-17-2005, 10:38 AM   #5 (permalink)
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Quote:
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Are they just battery powered or do they run off the house current?
house power.

as I was sitting in my office doing some work, I heard a drip... looked back & saw an other smoke detector that had not gone off. Upon closer inspection, I found it full of water. I'm going to go ahead and have the electrician come out to see if there's an issue somewhere. Better safe than sorry.
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Old 10-17-2005, 10:38 AM   #6 (permalink)
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since i do this for a living....

most new home systems are AC powered just like any light fixture, and the battery is for back up power in the event of a power outage, however, they are also frequently interlocked so that if one detector alarms, it will signal all the other devices to annunciate as well (snuff out a candle under one, and they all go off, ...so if you headbanger son is rocking it in the basement he won't get trapped in a fire by not hearing a detector on another floor or room) a dead battery should only make that detector chirp.

possibly a detector got fried and is sending a falsh alarm signal to al lthe others - you would have to track down the bad one by trail and error, and replace it. - my guess?
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Old 10-17-2005, 10:43 AM   #7 (permalink)
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possibly a detector got fried and is sending a falsh alarm signal to al lthe others - you would have to track down the bad one by trail and error, and replace it. - my guess?
Right you are. After unplugging the flooded detector, I can plug the others in with no alarm.

I'll have the electrician out to check the wiring around that area just in case.

Thanks!
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Old 10-17-2005, 10:44 AM   #8 (permalink)
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I'd go with what the fire department said. That was my first thought. I assume that this has not happened again. If it has then I would have someone look into it. To be safe, I would still test all of the detectors to see if they go off when smoke is present.

Edit: I guess I was a bit late.
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Old 10-17-2005, 10:50 AM   #9 (permalink)
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Quote:
Originally Posted by BrianK
Right you are. After unplugging the flooded detector, I can plug the others in with no alarm.

I'll have the electrician out to check the wiring around that area just in case.

Thanks!
Where did the water come from? roof leak? A/C condensation?
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Old 10-17-2005, 12:23 PM   #10 (permalink)
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.....sounds like paranormal activity to me.


The real question is:



Who ya gonna call?
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Old 10-17-2005, 02:09 PM   #11 (permalink)
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Where did the water come from? roof leak? A/C condensation?
Roof leak, I believe. Just before I moved in, I had the previous owner replace the sewer vent on the roof... I just wanted them to put an extension so that vented sewage gas wouldn't blow into an upstairs room, but instead, they put in a whole new pipe. It appears to be a shoddy job & I'm geussing they didn't seal the hole in the roof good enough.
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Old 10-17-2005, 02:15 PM   #12 (permalink)
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Who ya gonna call?
Ghost Busters...
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Old 10-17-2005, 03:48 PM   #13 (permalink)
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How much would that irony suck if that smoke detector shorted out and caught your house on fire!?
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Old 10-17-2005, 05:16 PM   #14 (permalink)
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When I poked around at mine (also AC-powered and linked together), it seemed like the third AC wire (ground) was common to all the smoke detectors, and only them.

When one of them went off, it would put a small DC voltage on this third line (relative to neutral?) and cause the others to go off.

Neat idea.

I still plan to feed that signal into my home alarm/automation system.
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Old 10-17-2005, 06:13 PM   #15 (permalink)
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How much would that irony suck if that smoke detector shorted out and caught your house on fire!?

Thats just evil. My kinda luck too
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Old 10-17-2005, 10:58 PM   #16 (permalink)
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How much would that irony suck if that smoke detector shorted out and caught your house on fire!?
I was thinking the exact same thing.
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Old 10-18-2005, 11:52 AM   #17 (permalink)
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all the batteries went low at the same time.
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Old 10-18-2005, 08:30 PM   #18 (permalink)
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Sometimes some dust or a moth or spider can get into the alarm and set it off.
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