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HVAC fan always running at level 6 even if target temperature is reached. Normal?

Discussion in 'Model S' started by xsi123, Jan 10, 2017.

  1. xsi123

    xsi123 Member

    Joined:
    Aug 5, 2016
    Messages:
    62
    Location:
    MA
    New owner (2 weeks), AP2 hardware.

    When I set (reset) the hvac settings to auto, the fan goes to speed level 6 and stays there even if the interior temperature is reached (I check the interior temperature using the mobile app). As a result the temperature continues to go up.

    I would expect that when the interior temperature reaches the setting set on the touch screen, it would lower the fan and it would try to keep the temperature steady (as much as possible).

    I also made sure both sides (driver,passenger) are set at the same temperature and are in sync.

    The same happens when I turn on climate using the mobile app. Even if the setting is set at 70 for example, the interior reaches 80 because the fan does not lower its speed.

    Anybody else with similar issue?
     
  2. Dborn

    Dborn Confirmed

    Joined:
    Aug 26, 2011
    Messages:
    2,358
    Location:
    Sydney, Australia
    Not normal. See your service center.
     
  3. ucmndd

    ucmndd Member

    Joined:
    Mar 10, 2016
    Messages:
    410
    Location:
    California
    Mine isn't always on "6" but is always 2-3 settings higher than I think it needs to be.
     
    • Like x 1
  4. CHG-ON

    CHG-ON Still in love after all these miles

    Joined:
    Jun 24, 2014
    Messages:
    3,060
    Location:
    Santa Cruz Mountains, USA
    Mine is always lower than I want! Very annoying.
     
  5. ISkiFast

    ISkiFast Member

    Joined:
    Nov 20, 2016
    Messages:
    13
    Location:
    Seattle
    Mine always seems "too high" as well, so i end up turning it down manually once it feels like the car is too warm. I didn't think to check the 'internal temp' via the app...I'll try that and see if I have the same problem
     
    • Like x 1
  6. croman

    croman Active Member

    Joined:
    Nov 21, 2016
    Messages:
    1,506
    Location:
    Chicago, IL
    Mine also go at a very high level (but not 6) after reaching temp. I also find that it spritzes the air with AC to keep humidity down but sometimes I don't want that (like when its -10F). I find I have little control over the HVAC though. I'm still waiting to be able to control defrosting and seat warming/steering wheel warming via the app...
     
  7. mknox

    mknox Well-Known Member

    Joined:
    Aug 7, 2012
    Messages:
    9,047
    Location:
    Toronto, ON
    FWIW, my fan on auto is always too low for my tastes. Even when the car is in a deep freeze, it seems to go no higher than about 6 ,then tapers back to a measly 2 or 3. All of my previous ICE cars would crank the fan up very high (after the engine warms) to heat up the cabin, but not my Model S.

    I have my right scroll wheel set to control the fan speed and use it a lot (scroll for speed, press to put back in Auto).
     
  8. SCDrJ

    SCDrJ Member

    Joined:
    Jul 26, 2014
    Messages:
    157
    Location:
    Scottsdale, AZ
    I also seem with recirculate on that fan won't go below 4.
     
  9. xsi123

    xsi123 Member

    Joined:
    Aug 5, 2016
    Messages:
    62
    Location:
    MA
    Did some tests using the API that gives you more details and instant feedback.

    --- Fan never goes below 4. It is always between 4 and 6 no matter the different in the target and current temperature

    --- The way it controls the temperature is by adjusting the air temperature, not by adjusting the fan speed

    --- It never reaches a steady temperature. If the target is set at 74 for example, internal temperature value is moving between 72 and 76 all the time. I am guessing that since the fan speed is not utilized, it is more difficult to keep the temperature steady.

    --- It doesn't look like external temperature plays any role on the way the system is behaving.


    {
    "response": {
    "inside_temp": 20,
    "outside_temp": 14,
    "driver_temp_setting": 21.1,
    "passenger_temp_setting": 21.1,
    "left_temp_direction": 102,
    "right_temp_direction": 102,
    "is_auto_conditioning_on": true,
    "is_front_defroster_on": 3,
    "is_rear_defroster_on": false,
    "fan_status": 4,
    "is_climate_on": true,
    "min_avail_temp": 15,
    "max_avail_temp": 28,
    "seat_heater_left": 3,
    "seat_heater_right": 0,
    "seat_heater_rear_left": 0,
    "seat_heater_rear_right": 0,
    "seat_heater_rear_center": 0,
    "seat_heater_rear_right_back": 0,
    "seat_heater_rear_left_back": 0,
    "smart_preconditioning": false,
    "timestamp": 1484259974870
    }
    }
     
  10. T3SLA90D

    T3SLA90D Member

    Joined:
    Jan 5, 2017
    Messages:
    43
    Location:
    York, PA
    I have the same issue. New MS 90D December 2016 delivery. Car in service now for other problems and asked them to check the HVAC function. We'll see what service center says.
     

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