Re: Fans Sets Off Glassbreak

[Chris <chriswheeldon@xxxxxxxxx>]

On Tuesday, June 12, 2012 11:14:52 AM UTC-7, Bob La Londe wrote:
> Ok...  I haven't an idea where to look with this one...
>=20
> I have not been out to the site yet, but the customer claims the alarm go=
es=20
> off when they turn on the ceiling fan.
>=20
> Ok...  I do have an idea.  This was a takeover, and I didn't run any of t=
he=20
> wire.  I wonder if one of the wires is parallel to the fan wire in the=20
> attic, and its getting an induced voltage spike when the motor starts up.=
..=20
> I don't know.
>=20
> I've always been careful of that sort of thing myself and I have never=20
> experienced that on an alarm.
>=20
> I guess I also need to go listen to the fan starting up.  LOL.



On Tuesday, June 12, 2012 11:14:52 AM UTC-7, Bob La Londe wrote:
> Ok...  I haven't an idea where to look with this one...
>=20
> I have not been out to the site yet, but the customer claims the alarm go=
es=20
> off when they turn on the ceiling fan.
>=20
> Ok...  I do have an idea.  This was a takeover, and I didn't run any of t=
he=20
> wire.  I wonder if one of the wires is parallel to the fan wire in the=20
> attic, and its getting an induced voltage spike when the motor starts up.=
..=20
> I don't know.
>=20
> I've always been careful of that sort of thing myself and I have never=20
> experienced that on an alarm.
>=20
> I guess I also need to go listen to the fan starting up.  LOL.



On Tuesday, June 12, 2012 11:14:52 AM UTC-7, Bob La Londe wrote:
> Ok...  I haven't an idea where to look with this one...
>=20
> I have not been out to the site yet, but the customer claims the alarm go=
es=20
> off when they turn on the ceiling fan.
>=20
> Ok...  I do have an idea.  This was a takeover, and I didn't run any of t=
he=20
> wire.  I wonder if one of the wires is parallel to the fan wire in the=20
> attic, and its getting an induced voltage spike when the motor starts up.=
..=20
> I don't know.
>=20
> I've always been careful of that sort of thing myself and I have never=20
> experienced that on an alarm.
>=20
> I guess I also need to go listen to the fan starting up.  LOL.



On Tuesday, June 12, 2012 11:14:52 AM UTC-7, Bob La Londe wrote:
> Ok...  I haven't an idea where to look with this one...
>=20
> I have not been out to the site yet, but the customer claims the alarm go=
es=20
> off when they turn on the ceiling fan.
>=20
> Ok...  I do have an idea.  This was a takeover, and I didn't run any of t=
he=20
> wire.  I wonder if one of the wires is parallel to the fan wire in the=20
> attic, and its getting an induced voltage spike when the motor starts up.=
..=20
> I don't know.
>=20
> I've always been careful of that sort of thing myself and I have never=20
> experienced that on an alarm.
>=20
> I guess I also need to go listen to the fan starting up.  LOL.

I wouldn't think the wire would be neatly stapled along with the electrical=
 in an attic. Actually, I wouldn't think it would be stapled at all.  Unles=
s, of course, it was a pre-wired house and the electrical was done after th=
e alarm.

Perhaps they aren't actually glassbreaks?  I've removed the occasional sens=
or that are about as old as I am where they have a microphone inside and si=
mply go off with any sound.  They're about 3"x10" with a foam cover and alm=
ost look like cheap speakers with a red LED that lights up when it picks up=
 sound.  You can set those off with a loud footstep.

Either way... hope you figure it out.  Let us know what you find.

- Chris