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  • SMX Control Box & Cruise Airs

    Posted by Tim on December 28, 2015 at 3:28 pm

    Three of my SMX control boxes are illuminated all the time (bedroom, salon, galley) and to run the cruiseairs, I have to press the button on the dash. However, my SMX for Aux Air does not illuminate until I push the button on the dash.

    Is this normal or should the SMX control box for the Aux Air be illuminated all the time like the other three? If so, would this be a fuse or relay on the Marathon side?

    Read both SMX articles here which are included in my coach as well but it doesn’t answer this question.

    Steve replied 10 years, 10 months ago 5 Members · 6 Replies
  • 6 Replies
  • Archived

    Member
    December 28, 2015 at 6:36 pm

    are all the control pads the same style? I have four in my coach one is a touch pad and no lights.

  • Paul

    Member
    December 28, 2015 at 7:45 pm

    Tim

    That is normal, I asked the same question to Joe in St. Antonio Fl, he give me an answer but that was long time ago, I don’t remember what the answer was now. But you can call Joe and ask him as well.

  • glen

    Member
    December 28, 2015 at 8:52 pm

    I don’t have a Marathon, but if I’m remembering correctly from past experiences it has something to do with the heat pump. Not all the SMX’s are tied to a heat pump. Therefore the ones that aren’t will not illuminate without the dash button pressed. And in a Marathon it seems 3 of the 4 units have a heat pump, one does not, i.e. your auxiliary air.

    Could be completely wrong on this but seems to ring a bell with me.

    Chime in anyone if this is inaccurate.

  • Archived

    Member
    December 28, 2015 at 10:47 pm

    Tim,

    The aux A/C does not have the heat pump and doesn’t have the Webasto control either. It’s strictly an A/C and is only active when the dash button is on.

  • Tim

    Member
    December 29, 2015 at 8:27 am

    Thanks everyone!

  • Steve

    Member
    December 29, 2015 at 11:18 am

    BBB is correct in his above response.

    Bill S.

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