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Fan Position 1

Discussion in 'Roadster: Technical' started by Jonathanm, Jan 17, 2018.

  1. Jonathanm

    Jonathanm Member

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    Hello,
    I don't get any air from position 1 on the fan control. Everything lights up ok - only get fan running on speed 2 or 3. Assume this is not normal - any ideas about where this is all controlled from?

    Thanks as usual to the brain trust!
     
  2. supersnoop

    supersnoop Tesla Roadster #334

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    That seems normal to me, unless I misunderstood your numbering. The lowest fan setting is off.
     
  3. Jonathanm

    Jonathanm Member

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    Thanks, yes zero is of course off - but on my car there is no fan running on position 1. Only position 2 & 3. Just does not seem normal to me?
     
  4. Drewflux

    Drewflux Member

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    @Jonathanm I wonder if the blower fan has a conventional fan speed resistor? Normally most are internally wired in series, but I have seen some that are eired in series/parallel. You will have to wait for someone who has a schematic to confirm.
     
  5. XR116

    XR116 Member

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    Seems not to be normal to me, mine is blowing at 1, and 2 and 3 is just more airflow, but it starts at "1" - 0 is off.
    Any difference if you set to windshield or passnger (right knob @full right or full left) ?
     
  6. Jonathanm

    Jonathanm Member

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    No, no fan on position 1 no matter where the direction is - ok seems this is not normal. OK now to get to the bottom of this...any gems? I must admit its been like this since I had the car...

    Thanks,
     
  7. supersnoop

    supersnoop Tesla Roadster #334

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    Sorry for the confusion. Mine doesn’t have any numbers, so I wasn’t considering position 0.

    2E2AA704-3B0C-4A0D-8F66-BAAA4659494D.jpeg
     
  8. NigelM

    NigelM Recovering Member

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    Roadster 2.5 has 0-1-2-3 just beneath the Alpine unit; but, yes @Jonathanm you have something that isn't normal. I get air flowing while the car is moving even on zero which is only stopped by physically closing the vents or switching to internal circulation only, however 1-2-3 are fan settings with corresponding increasing speed.
     
  9. MLAUTO

    MLAUTO Member

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    SW Florida
    The fan speed is controlled by the HVAC module. It does not use a blower motor resistor like the lotus. It could be the switch, as it has three separate 12V feeds into the HVAC module, one for each speed.
     
  10. Jonathanm

    Jonathanm Member

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    Thanks for this...switch first place to check....if I remember correctly whole dash and stereo needs to be removed first before I can get to the fan controls?
     
  11. strider

    strider Active Member

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    I would check the switch first - could be a dirty contact or a loose wire. Haven't had the dash apart so can't help you there.
     
  12. Kerios

    Kerios Member

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    Oxford, UK
    Try some contact cleaner on the switch - you may need to remove the switch panel - but often the contacts between the pads on the switch accumlate grime which prevents a good electrical contact. If you do that switch, worth doing the others at the same time.
     
  13. Jonathanm

    Jonathanm Member

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    Thanks Kerios - I'll try that but I think I need to remove the centre consul to get the panel off...I'll try from the outside first...
     
  14. jnordeng

    jnordeng Member

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    My fan isn't working in any positions now, did you ever find the problem?
     
  15. Jonathanm

    Jonathanm Member

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    No I have not looked at it yet....its on my list....I think I have to take the dash off...not 100% sure...not the end of the world but a bit of a PITA..
     

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