Failure to dim up

Discussion in 'C-Bus Wired Hardware' started by pmfortune, Jun 8, 2026 at 9:02 PM.

  1. pmfortune

    pmfortune

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    I've recently updated my 5508D1A dimmers to 5508D1Ds. All channel are programmed to use trailing edge and all drivers for LED are electronic (all the same type).

    In one room, when the lights haven't been on for a while and a scene is triggered, one channel doesn't light. As soon as it's toggled off then on again it lights. It's constant on a single channel.

    I have found if I set a minimum level of 4% on the channel the light goes off OK but then always goes on when expected.

    Any thoughts?

    Thanks
     
    pmfortune, Jun 8, 2026 at 9:02 PM
    #1
  2. pmfortune

    Trevor

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    try swapping the 2 of the outputs (Hardware) the dimmer controls and see if the fault moves with that.
    Also try swapping the 2 inputs (Software) to them as well.
     
    Trevor, Jun 8, 2026 at 9:50 PM
    #2
  3. pmfortune

    Tension

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    Press the relevant channel key on the unit twice to disable auto detection. It'll flash quickly to confirm.
     
    Tension, Jun 8, 2026 at 9:54 PM
    #3
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