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Propeller heating

Scheduled Pinned Locked Moved Piston & Turbine Dukes
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  • J Offline
    J Offline
    johannes_a_huber
    wrote on last edited by
    #1

    Is it correct, that if you test the propeller heaters individually, the right one does not increase the ampere indication?

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    • Black SquareB Offline
      Black SquareB Offline
      Black Square
      Black Square Developer
      wrote on last edited by
      #2

      The propeller heat will not operate on the ground unless you are holding the propeller heat test button. When you hold the button, the normal cycle of operation will begin, which I believe starts with the left engine. After 30 seconds, the left heat will turn off, and then a few seconds later, the right heat will turn on. I hope that answers the question you were asking.

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      • J Offline
        J Offline
        johannes_a_huber
        wrote on last edited by
        #3

        Thank you. I think, I did not press the button long enough. Sorry.

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        • L Offline
          L Offline
          Lemny
          wrote on last edited by Lemny
          #4

          ahh... this could explain why the right prop heater only giving a short spike in amp usage when activated.
          But why there are two switches though.

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          • Black SquareB Offline
            Black SquareB Offline
            Black Square
            Black Square Developer
            wrote on last edited by
            #5

            The two switches just enable/disable each propeller's heater coils, but the timing electronics are always operating when there is power to one of the coils.

            Yes, sorry! I forgot to answer that part of your message. I seem to recall the way that I programmed that functionality, I would not be surprised if there is a momentary current spike before the timing controller activates.

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