Commander Core XT ramping fans to 100%

[HnyBear.bacon]

Suddenly out of no where my Commander Core XT ramps the fans to 100% when the PC is locked or I close iCUE. I had briefly installed MSI Center for my new GPU but it was conflicting with iCUE so I completely uninstalled it. However the fans still are ramping up to 100% and it's only on that controller. I also have a H150i Elite Capellix with 6 fans plugged into it and that is unaffected. I have tried;

1.  Uninstalling and reinstalling iCUE
2.  Resetting the Commander Core XT. (Press the reset button, unplug sata power, wait a few seconds and plug sata power back in while holding button still then release. Open icue and the commander core xt doesn't even show up, not until I reboot.)
3.  Forcing a firmware update on the Commander Core XT

I'm lost for what to do but I can't have these fans running 100% every time my PC goes to away/lockscreen.

 

Any help is much appreciated.

Edited December 16, 2022 by HnyBear.bacon

[c-attack]

What fan curve are you using?  The preset (Quiet, Balanced, Extreme) or a custom curve of your own making?  If a custom curve, what did you set for a sensor (control variable) at the bottom?  

 

When you lock Windows CUE can longer access data from other components like CPU temp or GPU temp.  The solution to that is use a temp probe from the Com XT.  That is native to device and will be able to be read at all times regardless of OS state.  

[HnyBear.bacon]

I’m using a custom curve and it’s set to the H150i. Again it’s only the core xt doing this. The other 6 fans are fine. Latest version of iCUE too. 

[c-attack]

When you lock Windows, the Commander XT loses access to the data from the Commander Core.  The Commander Core can read it's own internal temp sensor for the coolant (H150i Temp) at all times -- boot, OS, shutdown -- but the XT needs CUE active to fetch that data from the other controller.  

 

If you need to lock the PC a lot or even just to get rid of the fan blast during boot or shutdown, you need to use one of the temp probes from XT kit as the source.  There are a few viable locations. 

Option 1 - Place the sensor end of the 10K thermistor wire somewhere near the rear exhaust.  This can be inside or outside of the case where you can't see it.  Exit air temp is a perfect variable for how much fan speed you need.  GPU activity is the largest source of heat in the case and this should follow right along with that.  You'll have to figure out your normal range, but it will be very close to what you see for coolant temp.

Option 2 - Place the sensor end on the exhaust side of your CPU radiator.  Coolant temp and radiator exit temp have a direct relationship and are close to being equal in most situations.  This lets you use the same curve as the Commander Core, but the XT will be able to get a reading at all times.  

[HnyBear.bacon]

I appreciate the long thought out answer but it’s been working for months without Rampling up to 100%. This just started happening . It has to be something else.

[LeDoyen]

The weird thing is that it didn't do it until now lol

when locking windows, and using a software sensor, the fans are supposed to go to full speed. Now the XT is working as intended (which sucks, i agree). So, something was off before, and got fixed now somehow.

There would be an option 3 which would be to get rid of the XT, and connect all the fans to the commander core of the Capellix using SATA powered PWM hub(s).

Like this, the H150i temp is obviously always available whether the PC is locked or not.

[HnyBear.bacon]

5 minutes ago, LeDoyen said:

The weird thing is that it didn't do it until now lol

when locking windows, and using a software sensor, the fans are supposed to go to full speed. Now the XT is working as intended (which sucks, i agree). So, something was off before, and got fixed now somehow.

There would be an option 3 which would be to get rid of the XT, and connect all the fans to the commander core of the Capellix using SATA powered PWM hub(s).

Like this, the H150i temp is obviously always available whether the PC is locked or not.

Nah that doesn't work either because then I lose the ability to control the RGB the way I want to. hmmmm I suppose I could use the stupid temp sensor that came with it but then it's not going to work based on the coolant temp of the H150i while iCUE is running. I wish there was a way to just tell it to set the fans to a constant while the damn software isn't running that's not 100%. Let me set it to 50% or something.

There's not a way to set it to use the temp sensor while the computer is locked/iCUE is closed and switch back to the H150i while the software is open is there?

 

I mean honestly it's like these companies have never even used their own software or products. What a **** design.

[LeDoyen]

Unfortunately when it comes to cooling, Corsair went the barebones way. One single sensor, 4 or 5 points curve, and deal with it.

For the temp sensor, you could stick it to the H150i end tank, on the radiator, where the hot water comes in, somewhat out of sight, and it would work fine. Even if the reading is slightly off because outside of the tank, you can adjust the fan curve on the XT accordingly. Same shape, lower values.. but it should be pretty damn close.