Fans Sets Off Glassbreak

[Bob La Londe]

Ok... I haven't an idea where to look with this one...

I have not been out to the site yet, but the customer claims the alarm goes
off when they turn on the ceiling fan.

Ok... I do have an idea. This was a takeover, and I didn't run any of the
wire. I wonder if one of the wires is parallel to the fan wire in the
attic, and its getting an induced voltage spike when the motor starts up...
I don't know.

I've always been careful of that sort of thing myself and I have never
experienced that on an alarm.

I guess I also need to go listen to the fan starting up. LOL.

 

[Bob La Londe]

Ok... I haven't an idea where to look with this one...

I have not been out to the site yet, but the customer claims the alarm
goes off when they turn on the ceiling fan.

Ok... I do have an idea. This was a takeover, and I didn't run any of
the wire. I wonder if one of the wires is parallel to the fan wire in the
attic, and its getting an induced voltage spike when the motor starts
up... I don't know.

I've always been careful of that sort of thing myself and I have never
experienced that on an alarm.

I guess I also need to go listen to the fan starting up. LOL.

I found a double door on the same zone that wasn't properly latched. Top
pin of passive door was down so both doors could move easily at the top.