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fan running

After starting the iMac today the fan is running full time. This is new. How do I troubleshoot the problem or turn off the fan?

Mac 21 ½", running mac os 10.13.6


iMac

Posted on Mar 5, 2023 2:20 PM

Reply
Question marked as Top-ranking reply

Posted on Mar 5, 2023 3:22 PM

Might be dangerous to turn off the fan.


Open Activity Monitor in Utilities, View>All Processes, sort on CPU%, see if anything using too much CPU%.


Open Activity Monitor in Utilities> View>All Processes, Energy tab, sort on Energy Impact.


Have you done a PRAM reset, CMD+Option+p+r...


Reset NVRAM on your Mac - Apple Support


In fact, do 3 in a row, takes a bit of time.


Intel-based Macs: Resetting the System Management Controller (SMC)...


Reset the SMC of your Mac - Apple Support


2 replies
Question marked as Top-ranking reply

Mar 5, 2023 3:22 PM in response to LauraJAK24

Might be dangerous to turn off the fan.


Open Activity Monitor in Utilities, View>All Processes, sort on CPU%, see if anything using too much CPU%.


Open Activity Monitor in Utilities> View>All Processes, Energy tab, sort on Energy Impact.


Have you done a PRAM reset, CMD+Option+p+r...


Reset NVRAM on your Mac - Apple Support


In fact, do 3 in a row, takes a bit of time.


Intel-based Macs: Resetting the System Management Controller (SMC)...


Reset the SMC of your Mac - Apple Support


fan running

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