Re: Wireless Motion Sensor goes off when A/C set to higher temps

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

It could be several things - highly unlikely it's the motherboard though.

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"smsdavis" <smdavis@xxxxxxxxxxxxxxx> wrote in message
news:1157993105.256241.184640@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| Ok.  I'm going to apologize.  Although I studied engineering many years
| ago, I am NOT interested at all in studying alarm systems and how they
| work and I am a woman.  SO, please bear with me but perhaps one of you
| geniuses could help me with a problem we have.
|
| Each and every time we leave town we turn our A/C up to about 80 or
| possibly higher.  Would have to ask hubby the exact temperature but he
| doesn't wish to cool the house while we're gone.
|
| When we do this after we leave town and usually when we're out of cell
| phone range our alarm system starts going off.  It is ALWAYS the
| wireless motion sensor in our front hall area.
|
| Now, we have a maintenance contract with our provider and they have
| sent several people out none of whom seem to know what they are doing
| in this area and all of whom have their own theories.
|
| The first one said there was a known problem with that motion sensor
| not working properly with our old motherboard.  So he replaced the
| entire motherboard of the unit.
|
| We left town and again had to call and have the system ignored while we
| were gone as the problem started happening again.
|
| Today someone came out and said he suspects it is the sunlight coming
| thorugh the window causing the alarm to go off.  I said if that were
| the case then it should be going off even when we're in town and gone
| during the day.  He said, no the A/C would cool it down and keep it
| from going off.  However, there would stil be a temperature difference
| on the stairs regardless of what the AC is set at.
|
| I asked him if there was a specification from the manufacturer with
| operating temperatures to which he replied "NO".  As an engineer I
| really doubt anyone made an electronic device and did NOT specify
| operating temperatures.
|
| So, I'm trying to figure out WHY this keeps occurring.  Is this unit
| truly BAD?  Is it the sun?  Is there an operating temperature and
| perhaps we need to set the A/C to not go past that limit?
|
| Please, feel free to email me anything that might be helpful to
| smdavis@xxxxxxxxxxxxxxx as I really don't have time to check for
| answers but I really need to have a reliable system.  Paying for
| monitoring when we have to turn off half the sensors in the house is
| ridiculous and I don't have much confidence in the techs they keep
| sending to my house and from what little I've read it seems you guys
| know much more about these sytems than do the techs they keep sending
| out.
|
| Thank you so much for anything you can do to shed some light on this
| problem.
|