iMac 27 5k (late 2014) fan runs low speed nonstop during sleep mode

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iMac 27 5k (late 2014) fan runs low speed nonstop during sleep mode

Hi,

New to the Mac community. Had the iMac 27 5K for about a month now. I've noticed the fan in the back of the monitor runs on low the entire time it's in Sleep Mode. I need to put my ear up to the vent to hear the fan running but can definitely feel air blowing out of it even after it's been sleeping for a few hours. It runs on low throughout the night. The fan stops completely only when it's shut down. Since this is my first iMac, not sure if this is normal or not? Can anyone confirm or have the same occurrence? Thanks for your input.

iMac with Retina 5K display, OS X Yosemite (10.10.1)

Posted on Dec 27, 2014 12:04 PM

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latcapp Author

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Jan 2, 2015 6:13 PM in response to latcapp

UPDATE:

For anyone with the same issue with this model of iMac; the fan running on low when it's in sleep mode is NOT NORMAL. I eventually brought the computer into an Apple store. They ran diagnostics and nothing. This model being so new has not had many logged issues in their database. They were going to reinstall the OS but after I reiterated that the fan runs all throughout the night while in sleep mode they decided to exchange it for another new computer. As an aside I noticed a large spike in my electricity bill in the month I've had the iMac hence noticing the fan ran all the time while in sleep mode. Otherwise, I wouldn't have look into it as an issue. I'm pleased to say that with the new computer, when I put it into sleep mode, the fan stops. Hope this helps others who run into this problem.

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