Macbook pro 2018 system pal says fan is negative?

Discussion in 'MacBook Pro' started by bonjourx, Oct 27, 2018.

  1. bonjourx macrumors regular

    bonjourx

    Joined:
    May 26, 2016
    #1
    Hi, I don't really know that much how fan works and all but I used to have a MacBook Pro 2016 13inch and the fan never has/became negative rpm with lots of numbers. Now I have a MacBook Pro 15inch, 2.6ghz 16gb ram and 512gb and system pal shows that my fans are sometimes on negative side and lots of numbers then back to just regular numbers? Am I reading it wrong or looking at the wrong thing? I just wanna make sure theres nothing wrong with my laptop as I've never seen my old one like that.

    Screen Shot 2018-10-27 at 9.26.59 PM.png
     
  2. chabig macrumors 603

    Joined:
    Sep 6, 2002
    #2
    I’m sure there is nothing wrong with your laptop. Stop looking for problems and enjoy your new machine.
     
  3. bonjourx thread starter macrumors regular

    bonjourx

    Joined:
    May 26, 2016
    #3

    I hope there really is not! I wasn't really paying attention to it until I've touched my laptop today while it was on sleep, I noticed that it was fairly warm. the lid was close and no application was open. the fans are always running (which I've read in some forums they say its normal for 15inch for the fans to be always on. Thats why I checked the fan rpm and I noticed that its sometimes negative. Ive tried googling up what does the -rpm means but I couldn't find an answer. so I was hoping someone can answer me here.
     
  4. IngerMan macrumors 65816

    IngerMan

    Joined:
    Feb 21, 2011
    Location:
    Michigan
    #4
    Delete that app. Download istat menu. Your machine will run hot the first 24-36 hours from indexing. Relax and give it a few days.
     
  5. chabig macrumors 603

    Joined:
    Sep 6, 2002
    #5
    Sorry I was a bit short at first. Certainly it's possible that your machine might be faulty but it is definitely not likely. Also, we know the fan RPM cannot be negative, so the more likely cause for what you see is just a bad app. These machines do tend to run warm when the CPU is tasked. I agree with IngerMan. Wait a few days. But even then it'll get warm or even hot occasionally. That's all normal and if it gets too hot it automatically shuts down. So unless it's shutting down, you are fine.
     
  6. bonjourx thread starter macrumors regular

    bonjourx

    Joined:
    May 26, 2016
    #6

    can you recommend another application that shows the fan information too? is the fan for 15inch really loud? I started playing sims 4 and the fan was loud it never stops spinning. I checked the temperature in system pal it only went up till 68C but the fans were so loud. my MacBook Pro 13 non Touch Bar was not this loud.
    --- Post Merged, Oct 27, 2018 ---

    its okay! I downloaded the istats menu as suggested. this is what I got, I just have 2 safari tabs opened (youtube and this forum). any thoughts? I'm sorry, I just wanna make sure that it is not faulty, the last time I had my MacBook Pro 13inch 2016 it was so faulty it literally needed repair 3 times. First one was when I literally just got it after a month and I had to wait 2 weeks to get it back. so now I want to take action asap so instead of them repairing it and having to deal with the long wait time, id rather have it exchanged thats why I'm checking everything now. I hope I'm not sounding silly! lol

    Screen Shot 2018-10-28 at 1.13.10 AM.png
     
  7. SDColorado Contributor

    SDColorado

    Joined:
    Nov 6, 2011
    Location:
    Highlands Ranch, CO
    #7
  8. bonjourx thread starter macrumors regular

    bonjourx

    Joined:
    May 26, 2016
    #8
    isn't it bad to manually changed the fan speed instead of letting it does it job automatically?
     
  9. fokmik macrumors 68040

    Joined:
    Oct 28, 2016
    Location:
    USA
    #9
    yes, its ok. The fans on 15" are always running even at idle. The temperatures are ok if you have youtube opened
     
  10. chscag macrumors 68040

    chscag

    Joined:
    Feb 17, 2008
    Location:
    Fort Worth, Texas
    #10
    Macs Fan Control allows the fan to run at its default speed. The app is free and can be used to monitor the fan(s). You don't have to reset the fan speed unless you want to.
     

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9 October 27, 2018