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On\Off Switch for Air Conditioning

Discussion in 'Model S: User Interface' started by SDRick, Nov 8, 2016.

  1. SDRick

    SDRick Member

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    Am I missing something or is it a multi step process to turn on or off the air conditioning compressor?
     
  2. Coady

    Coady Member

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    It takes two taps. Once on the "auto" (or "custom") climate button at the center bottom of the screen and then disable the a/c from the climate overlay window that pops up.
     
  3. SDRick

    SDRick Member

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    I have it down to three taps, which in my mind is two too many. The first two taps does the trick as stated above, but you need one more tap to clear the climate control screen. Does anyone have a shortcut for this basic function?
     
  4. Buddy

    Buddy Member

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    I just hit the "PWR" button that is in the center of the screen in the lowest part of the center display. Turns on or off the entire A/C system. 1 tap only.
     
    • Informative x 1
  5. SDRick

    SDRick Member

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    #5 SDRick, Nov 9, 2016
    Last edited: Nov 9, 2016
    I have done this as well although it does not help when you simply want to bring in cool fresh air. This should be a one step process to make it easy to save the power-hungry air conditioning compressor! So far no one has come up with anything under three steps?
     
  6. Brass Guy

    Brass Guy Member

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    There is no shortcut to customize the climate control settings.
    If you leave it customized to AC/off, you can turn on or off the AC compressor with 1 tap by turning on/off (front) defrost. I think there is a separate temp setting when you turn on defrost, and it overrides the output settings; but you might try this to achieve your goal.
     
  7. NOLA_Mike

    NOLA_Mike Grouchy

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    If you have the right scroll wheel on the steering wheel set to control the temperature settings then just pressing the scroll wheel will turn the climate control OFF/ON.

    Mike

    EDIT: My mistake - looks like you just wanted to turn off the A/C compressor? I got nothing...
     
  8. SDRick

    SDRick Member

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    Brass Guy,

    I will give it a try, I appreciate your creative approach.
     
  9. SDRick

    SDRick Member

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    Using the front defroster button as the air conditioning on off switch works rather well the few times I've tried it.

    I am surprised a one-step on-and-off selection was overlooked by Tesla in the climate interface, especially since this can be a major source of auxiliary power consumption. I cannot think of any other automobile that lacks this simple control.

    Has anyone else noticed? Can a future update address this shortcoming?
     
  10. dgpcolorado

    dgpcolorado high altitude member

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    At least the AC can be turned off. My frustration is that the heater can't be turned off and will come on when all I want to do is blow cold fresh air in the car.
     
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  11. gavine

    gavine Petrol Head turned EV Enthusiast

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    I have mentioned this before. There should be a heater button just like AC. If the heat were "free" like with ICE cars, then no, but since our heat typically uses battery, the option to turn it off would be nice, without having to turn the fan off too.
     
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  12. SDRick

    SDRick Member

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    #12 SDRick, Nov 12, 2016
    Last edited: Nov 12, 2016
    Great point! It is really surprising that something as power-hungry as heaters and air conditioning compressors do not merit a simple on-off button!

    Tesla must've been asleep at the switch. lol
     
  13. TES-E

    TES-E Member

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    For those who never saw version 6.x, ac on/off was on the main screen next to the auto button. One of the many steps backwards when they went to v7.x and beyond.

    To turn the heat off, set the temp to LO. Make sure the a/c is off when you do. Many button pushes, but it works.
     
  14. dgpcolorado

    dgpcolorado high altitude member

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    This doesn't work to turn off the heater. I just want to be able to blow cold outside air in the car at times, rather than run the AC (it bothers me to run AC when the OAT is colder that what I need). But then the heater comes on and I get warm air instead, which is exactly what I don't want.

    This is what the power display looks like with the heater set to "LO":

    [​IMG]

    AC off, OAT 46ºF, cabin temp the same because the car was cold-soaked. Notice that the heater is drawing power. (The fan draws so little power it makes no difference for the reading.)

    This is what it looks like with the climate control off (and what it should look like if the heater could be turned off):

    [​IMG]

    Near zero power draw, same as one usually sees for just the electronic systems (and headlights, in this experiment) running.

    Don't believe me? Find some cool weather and try it. "LO" is not the same as "OFF".
     
    • Informative x 1
  15. SDRick

    SDRick Member

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    Perhaps I am missing something but can someone explain the difference between the two pictures above?
     
  16. TES-E

    TES-E Member

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    All I can say is when I set the temp to LO and set the fan to vent outside air, I get unheated outside air. If it is 40 degrees out, I get very cold air. I don't look at the energy meter on the dash... I look at the energy graph on the big screen. You can see a difference with heat on/off (and a/c on/off for that matter) if you can keep the other variables constant.

    My guess is you are seeing battery heating energy use, but that is merely a guess. I don't think you can turn that off (also indicated by the dotted yellow line showing limited regen ability. It only shows up when the battery is cold).
     
  17. dgpcolorado

    dgpcolorado high altitude member

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    The top picture shows the power meter at perhaps 2-3 kW. The bottom picture shows the power meter at near zero (the fact that it is orange shows a small draw, as expected to run the car electronics and the headlights). Reading the power meter in neutral is an easy way to measure the power draws of the climate control system. Like many here, I find the power meter to be one of the most useful and interesting instruments that Tesla provides.
     
  18. Brass Guy

    Brass Guy Member

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    Range mode turns off (or greatly reduces) battery heating.
    When not in range mode, somewhere near the 30kW regen limit the battery heater seems to turn off.
    I would guess that with those 2 photos taken about 1 minute from each other, it's not the battery heater making the difference.
     

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