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Model A1311 / Mid 2011 / 2.5 & 2.7 GHz Core i5 or 2.8 GHz Core i7 Processor

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My fan does not run

I installed a new ssd because my hdd crashed. The fan worked before i installed it but now its getting really hot and my fan wont turn on. Did i install it wrong? I bought the upgrade from here and i followed all the step. Help

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3 Answers

Chosen Solution

i figured it out. I installed a 3rd party fan control. I had to manually set the temperatures so the three fans could spin up. It was weird because it was set to auto and it would not do a thing.

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Another good reason not to use software and use the in-line sensor.

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The thermal sensor should be responsible for this issue, you need to find a way to reduce the RPM of the internal fan down to the usual range. You may solve the problem with the help of reliable third-part software.

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Did you install the in-line thermal sensor this system requires? OWC In-line Digital Thermal Sensor for iMac 2011 Hard Drive Upgrade. Its part of the SSD upgrade kit iMac Intel 21.5" and 27" (Mid 2011) SSD Upgrade Bundle

iMac Intel 21.5" and 27" (Mid 2011) SSD Upgrade Bundle Image

Product

iMac Intel 21.5" and 27" (Mid 2011) SSD Upgrade Bundle

$159.99

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Yes, I bought the 1tb upgrade from ifixit and installed the In-line Thermal Sensor. I also try using a 3rd party fan control program and it does not seem to work.

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Lets try running the onboard diagnostics to see if an error pops. Restart your system and press the D key.

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Ok so i just booted it up and the fans are running really fast now, and the third party app says that there is no fans detected

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And what did diagnostics tell you?

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It says "No trouble found". I hear a fan turn on in the diagnostics. Currently the temperature is at 111 degrees Fahrenheit and the fans are not spinning at all,

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