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H115i Platinum - Can't Control Fan #1


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Installed a new H115i Platinum and I'm unable to control the fan speed of whatever fan is plugged into the cable labelled #1.


  • Tried switching the fans around - it just repeats the behaviour on the other fan.
  • Tried each fan running from a PWM socket on the motherboard - they work fine
  • Setup a custom fan profile - nothing changes
  • Its using the Coolant temp - not CPU
  • Setting fan #1 to zero rpm - nothing changes
  • Latest firmware for H115i Platinum is installed and I've tried force installing it
  • Latest iCue is running - tried uninstalling and reinstalling
  • Fan 2 does change RPM but its slow in doing so
  • Pump RPM does change - again its quite slow in doing so
  • RGB lighting is working fine!


I'm at a loss for what it could be, ready to pull the thing and send it back.


I've attached logs if that helps.


Edited by Gnomely
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