teckthekid Posted February 24, 2020 Share Posted February 24, 2020 Hello, I have a Corsair h80i v2 for around 2 years now and it worked great. About two weeks ago it became very loud. Fan speeds are stuck at 1560 rpm. I can change as much as I want in iCUE but speeds do not change. I tried to reinstalling software but to no help. Any ideas on what can I do? Link to comment Share on other sites More sharing options...
c-attack Posted February 24, 2020 Share Posted February 24, 2020 Find the two fan connectors on the pump's controller and swap them. 1 <-> 2 The H80i v2 is a single fan channel, so one of the fans is the "control fan" and the other one mirrors its behavior. Possible the current control fan has developed a fault in its control wire. Other possibilities as well, but this is the easiest one to check. Link to comment Share on other sites More sharing options...
GrandAxe Posted March 4, 2020 Share Posted March 4, 2020 I have the same problem. I have tried doing that to no sucess... There is definitely one maun header of the two coming from the pump, i noticed because unplugin the non-main one made me have rpm response on screen (in-app), but unplugin the main one cuts rpm response to zero on screen. Still it resorted in failure... rpm is 1320-1400 constantly. I noticed that the main pwm header coming from the pump has 4 pins and the non-main one as 3 pins, but the 3rd one is at the left far side. And my fans have only 3 conectors. Could it be that the 4th is the control one??? Link to comment Share on other sites More sharing options...
c-attack Posted March 4, 2020 Share Posted March 4, 2020 And my fans have only 3 conectors. Could it be that the 4th is the control one??? There is your problem. The pump has a PWM controller that provides 12v at all times. You are using DC 3 pin fans that need to have the voltage lowered to reduce speed. That will never happen. You need to move those fans to the motherboard for control or use 4 pin PWM fans. Link to comment Share on other sites More sharing options...
GrandAxe Posted March 5, 2020 Share Posted March 5, 2020 There is your problem. The pump has a PWM controller that provides 12v at all times. You are using DC 3 pin fans that need to have the voltage lowered to reduce speed. That will never happen. You need to move those fans to the motherboard for control or use 4 pin PWM fans. I thought so... But was hoping for a software solution :D: Guess i have no other option :sigh!: Thanks mate! Link to comment Share on other sites More sharing options...
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