iMac - fan noise after replacing HDD

Discussion in 'iMac' started by kenchie, Jul 22, 2017.

  1. kenchie macrumors newbie

    kenchie

    Joined:
    Apr 26, 2011
    Location:
    London
    #1
    I have replaced the HDD in my 2011 27" iMac (10.11.6) with an SSHD. The fan is now running at full speed due to the new drive not having the relevant sensor information. I have fitted one of these 3rd party sensors but the noise persists. I have tried software solutions such as SSD Fan Control and HDD Fan Control, thay made no difference. I have reset SMC many times, as well as NVRAM. Does anyone have any other ideas please? Apple hardware test returns error code 4mot/4/40000003:hdd-1244 which refers to the HHD temp sensor I believe.
     
  2. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #2
    I believe that the 4mot is actually a fan motor failure error but since the fan is running at full speed that doesn't seem like the issue.

    At any rate, OWC certifies their thermal sensor to pass the Apple Hardware Test so if that isn't working I'd contact their customer support first. It might be a bad part.
     
  3. nambuccaheadsau macrumors 65816

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #3
    You need an OWC Heat Sensor kit.

    Apple mader this a non user upgrade procedure and unless one uses an identical hard drivew to the origional, the fans will go into overdrive. The kit prevents this.


    https://eshop.macsales.com/item/OWC/DIDIMACHDD11/
     
  4. DeltaMac macrumors G3

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #4
    reread OP post #1
    OP stated that sensor kit was installed. They just did not purchase directly from OWC, but the kit is the same OWC part.
    Best help for OP is to contact OWC tech support directly.
     
  5. nambuccaheadsau macrumors 65816

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #5
    'A third party sensor'.

    We can buy brands other than OWC.
     
  6. SaSaSushi, Jul 22, 2017
    Last edited: Aug 16, 2017

    SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #6
    The OP posted a link to the OWC and I am not familiar with any other brands than OWC offering iMac heat sensors.
     
  7. SaSaSushi, Aug 16, 2017
    Last edited: Aug 16, 2017

    SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
  8. simonsi macrumors 601

    simonsi

    Joined:
    Jan 3, 2014
    Location:
    Auckland
    #8
    I just reused the standard heat sensor, unstuck it from the HDD and stuck it to the SSD...
    --- Post Merged, Aug 16, 2017 ---
    I just reused the standard heat sensor, unstuck it from the HDD and stuck it to the SSD...
     
  9. SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #9
    Long ago I did the same for the sensor on a Late 2009 iMac Superdrive when I replaced it. Just carefully peel it off and reapply.
     
  10. Richdmoore macrumors 68000

    Richdmoore

    Joined:
    Jul 24, 2007
    Location:
    Troutdale, OR
    #10
  11. nambuccaheadsau macrumors 65816

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #11
    Required for any drive installed in the hard drive bay 2011 iMac - see OWC link as they sell the heat sensor kit.

    I never knew yankees equalled rudeness. But then baseball is a game girls play in Japan?


    https://eshop.macsales.com/item/OWC/DIDIMACHDD11/
     
  12. SaSaSushi, Aug 16, 2017
    Last edited: Aug 17, 2017

    SaSaSushi macrumors 68040

    SaSaSushi

    Joined:
    Aug 8, 2007
    Location:
    Takamatsu, Japan
    #12
    If you're that bothered by being at the receiving end of rudeness you might want to try being a little more polite and respectful to others. It's just a thought, anyway. ;)
     
  13. mbosse macrumors regular

    Joined:
    Apr 29, 2015
    Location:
    Vienna, Austria
    #13
    Correct! And the OWC cable works flawlessly, just converted my Dad's 2011 21.5 to SSD with exactly this cable. Its a bit tricky to mount, though.
     

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