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Edwards Systems 5721b

Discussion in 'Security Alarms' started by bee, Feb 1, 2004.

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  1. bee

    bee Guest

    I know this is a very old system - unfortunately, the one I have keeps
    intermittently showing "Power Trouble" and beeps! Does anyone know where to
    start checking this portion of the panel. Or better yet, anyone know where
    I can get the installation manual for this model?
  2. Mike Breslin

    Mike Breslin Guest

    Two things to consider right off the bat. It may be low batteries as the
    other poster indicated, but only if the battery charger module is the
    supervised one. There were several different chargers available for this
    panel, one of which didn't supervise the batteries at all..

    The second thing that comes to mind is to check the AC voltage coming in.
    There is a brownout detection circuit on these panels which is theoretically
    set for around 105 Volts AC. Low AC voltage can cause the panel to go in
    and out of trouble.
  3. bee

    bee Guest

    Replaced the batteries, and no more power troubles. the other batteries were
    only 1yr old!! The system though has another problem now - whenever an
    alarm is triggered, the alarm led's light up, but the horns do not
    activate - the Alarm Silence led is lit even though the alarm silence button
    is not pressed. Any ideas?

  4. Aegis

    Aegis Guest

    As long as that Alarm Silence LED is on, you aren't going to get your
    horns/strobes to fire. System Reset didn't extinguish the Silence LED?

    Also, if you are draining batteries in 1 year, you should check the current
    drain on your panel. It may be overloaded (in Standby and/or Alarm).
  5. Frank Olson

    Frank Olson Guest

    Time to source a replacement panel (or a new common control board)...
  6. bee

    bee Guest

    System Reset does not clear the Alarm Silence. I called in a tech, who had
    never seen this problem before. He called someone who told him that it was
    the Alarm Silence switch (you have to order the whole switch panel and
    transformers because they are all wired together). Now they (the tech's
    company) want my first and second born children as payment!!
    Coming from a engineering background, I am skeptical about the switch panel
    being bad - to me it sounds more like something on a board having shorted
    (or opened) so that the Alarm Silence signal is constantly active. I would
    suspect the main control board first. If I had schematics, I could narrow
    it down further, rather than have to go with a tech who would probably just
    change parts to find the problem. I wouldn't even mind eating crow if it is
    the switch panel - but it will take 4 to 6 weeks to get here!!
    BTW, any ideas on what the price should be for a replacement contrl board -
    ballpark?, and where I can get it?
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