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Case fans stopped working


girthlord
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So I've had this computer for about a year. I'm using the 500D Obsidian case with the commander pro that came with it, 3 case fans and the H150i AIO.

 

Just the other day I noticed 2 of my 3 case fans weren't spinning. They're all using the same curve in iCUE, all being registered just that the top 2 were at 0 RPM. I couldn't figure out what was wrong and gave up.. until today I noticed all 3 weren't spinning now. iCUE is updated, all the firmware is updated, even extreme curves doesn't get the fans to move. I've tried the other ports on the commander pro and they still don't work. AIO runs perfectly fine.

 

Any ideas?

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A bit ominous for them to simply kick off like that and I can't think of a logical control reason. Two standard troubleshooting tips for the Commander are 1) Unplug and replug each fan to see if it changes things. This has likely already been done. 2) Assuming these are PWM fans, go into the CUE settings -> Commander and change the header setting from 'Auto' to 4 pin. This will automatically apply PWM 12 volt at start up and also skip the fan test at boot you don't need for PWM.

 

However, both are long shots and multiple fans dropping off to zero is concerning. I would flash the firmware, but be aware there is always a small chance the unit freezes up. If you are not comfortable doing this, wait for Support to instruct you. Commander settings -> Check for update (it's up to date) -> then Force Update.

 

If this does not work or you decide to wait, use 4-6 while you wait for Corsair Support to address the issue. I can't think of a legitimate reason aside from some internal power management problem.

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A bit ominous for them to simply kick off like that and I can't think of a logical control reason. Two standard troubleshooting tips for the Commander are 1) Unplug and replug each fan to see if it changes things. This has likely already been done. 2) Assuming these are PWM fans, go into the CUE settings -> Commander and change the header setting from 'Auto' to 4 pin. This will automatically apply PWM 12 volt at start up and also skip the fan test at boot you don't need for PWM.

 

However, both are long shots and multiple fans dropping off to zero is concerning. I would flash the firmware, but be aware there is always a small chance the unit freezes up. If you are not comfortable doing this, wait for Support to instruct you. Commander settings -> Check for update (it's up to date) -> then Force Update.

 

If this does not work or you decide to wait, use 4-6 while you wait for Corsair Support to address the issue. I can't think of a legitimate reason aside from some internal power management problem.

 

I'm not sure exactly which fans they are, but they are 3 pin. I believe they are the LL120 RGB. I had bought 3 extra to match the ones that came with the case since the AIO didn't come with the same fans.

 

I had tried seeing if the fans that came with the AIO would work, to no avail. After replugging in the case fans and booting back up, port 1 is now the only functional port on the commander pro. All the fans will function only in that port.

 

I tried flashing the firmware and it didn't help. Changing the ports from Auto to 3-pin to 4-pin doesn't do anything, except Port 1 actually registers in Auto now for some reason.

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Those are LL fans and they are PWM 4 pin. If you are having trouble getting the fans to register in CUE as all (missing vs zero rpm), that is also concerning. When it's one, you think of the fan. When it's 3 adjacent ports, it likely is the controller. Contact Support. It seems likely they will need to replace it.

 

If Auto works better than 4 pin, that's absolutely fine.

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