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Apple Computing Products:
macOS - Desktop Hardware
iMac fan issues - what's going on?
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<blockquote data-quote="chscag" data-source="post: 1639433" data-attributes="member: 46727"><p>Your iMac only has one central fan which provides cooling for the entire machine. The rotating speed of that fan should be around 1200 RPM at startup under normal operating conditions. Did you buy Apple care for your iMac? In any event, I would take it on in to an Apple store genius bar (make an appointment first) and have them diagnosis it. A defective temperature sensor could cause the fan to ramp up or there may be a cooling problem internally.</p></blockquote><p></p>
[QUOTE="chscag, post: 1639433, member: 46727"] Your iMac only has one central fan which provides cooling for the entire machine. The rotating speed of that fan should be around 1200 RPM at startup under normal operating conditions. Did you buy Apple care for your iMac? In any event, I would take it on in to an Apple store genius bar (make an appointment first) and have them diagnosis it. A defective temperature sensor could cause the fan to ramp up or there may be a cooling problem internally. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac fan issues - what's going on?
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