Results 1 to 11 of 11

Thread: Ness D8/D16 not working on battery

  1. #1
    Junior Member
    Join Date
    May 2009
    Age
    46
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Reputation
    10

    Default Ness D8/D16 not working on battery

    I’ve just replaced the battery in my Ness D8 panel, however now when the AC is removed the panel dies completely.

    I’ve checked that the battery is ok, and I’m seeing 12.7v on the plug from the battery to the panel and it appears to be plugged in ok - I’m wondering if there is a fuse anywhere for the 12v side at all?



Look Here ->
  • #2
    Senior Member secure's Avatar
    Join Date
    Jan 2008
    Location
    W.A
    Posts
    907
    Thanks
    156
    Thanked 146 Times in 133 Posts
    Rep Power
    276
    Reputation
    2409

    Default

    Is there 12v power at the outputs for devices and the keypad still works when on ac power?

  • #3
    Junior Member
    Join Date
    May 2009
    Age
    46
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Reputation
    10

    Default

    The keypad and everything works fine on AC power, however when I remove the AC the whole panel, the keypad and the sensors are all dead - yet the battery is fine.

    Matt

  • #4
    Senior Member secure's Avatar
    Join Date
    Jan 2008
    Location
    W.A
    Posts
    907
    Thanks
    156
    Thanked 146 Times in 133 Posts
    Rep Power
    276
    Reputation
    2409

    Default

    Probably a stuff board. I've come across this before.
    Was the previous battery been in it for a long time.
    Sometimes the panel is trying to charge a old stuff battery and kills the panel. Burns out the battery charging circuit.

  • #5
    Member
    Join Date
    Oct 2010
    Posts
    333
    Thanks
    14
    Thanked 58 Times in 55 Posts
    Rep Power
    187
    Reputation
    604

    Default

    You'll see there are 2 small globes next to where the battery lead plugs onto the board. These are in series with the battery, and normally regulate the charging current into the battery. Test these with a multimeter - you should find they are both open-circuit, which is causing your problem. As Secure said, sometimes if the battery is left unchanged for too long after a Low Battery signal comes up on the keypad, it could stuff the board.

  • #6
    Junior Member
    Join Date
    May 2009
    Age
    46
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Reputation
    10

    Default

    Ah ok, I did see them both light up the other day when I was reconnecting everything on the panel. It was about that time that the 'LOW BATTERY' warning appeared on the screen and the battery stopped powering the panel.

    The panel had been removed from the cabinet for about a month, then reinstalled and a new battery put on - that is when it stopped working on 12 volts. I'll throw a multimeter across those lights when I get a chance.

    Is there anything I can do to get this panel back up and running or is a replacement job ?

  • #7
    Junior Member
    Join Date
    May 2009
    Age
    46
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Reputation
    10

    Default

    I finally got around to checking those LED's, they don't appear to be open circuit - but still seeing the 'LOW BATTERY' warning on the screen and the new backup battery is doing nothing when the power is pulled from the panel.
    Maybe the panel is cooked ? Everything else works fine, just annoying to have the warning constantly on the screen - is there a way to turn this off at all ?

  • #8
    Senior Member secure's Avatar
    Join Date
    Jan 2008
    Location
    W.A
    Posts
    907
    Thanks
    156
    Thanked 146 Times in 133 Posts
    Rep Power
    276
    Reputation
    2409

    Default

    Yeah replace panel.

  • #9
    Junior Member
    Join Date
    May 2019
    Location
    Brisbane
    Posts
    45
    Thanks
    0
    Thanked 3 Times in 3 Posts
    Rep Power
    62
    Reputation
    70

    Default

    I'd also put a voltmeter across the battery leads to see if any voltage is coming out. Should be 12.75 or more volts.

  • #10
    Junior Member
    Join Date
    May 2009
    Age
    46
    Posts
    10
    Thanks
    1
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Reputation
    10

    Default

    Yes there is 12.7v at the battery, and getting to the battery input on the alarm.

  • #11
    Member
    Join Date
    Jan 2008
    Posts
    255
    Thanks
    35
    Thanked 27 Times in 26 Posts
    Rep Power
    213
    Reputation
    360

    Default

    Check the leads without the battery connected - sounds like the charging circuit is cactus.

  • Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •