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.
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
iMac - fan noise after replacing HDD
- Thread starter kenchie
- Start date
-
- Tags
- fan hardware fault imac noise
- Sort by reaction score
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.
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/
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/
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.
The OP posted a link to the OWC and I am not familiar with any other brands than OWC offering iMac heat sensors.
Last edited:
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.
I don't think the 2011 model year used a heat sensor, it was changed from a standard sensor to a specific internal hard drive firmware in the hdd (which the OWC device supplies the iMac on non apple hard drives.)
https://blog.macsales.com/10206-further-explained-apples-imac-2011-model-hard-drive-restrictions
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/
I never knew yankees equalled rudeness. But then baseball is a game girls play in Japan?
https://eshop.macsales.com/item/OWC/DIDIMACHDD11/
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.
Last edited:
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.