Hi all,

I have a D5 Next Utilitube combo and have got it set up so that the fan output of the D5 Next goes to a 10 way powered fan splitter for 10 x case fans.

This works perfectly on curve controller and power preset modes, but when I try to use target temperature and set the target temp to eg 35C, then the output goes to 0% and the fans spin up to 100% output.

If I set the target temp to around 1C lower than the water temperature, then it reduces the fan speeds a lot and sets the output % properly (although I think too low?).

Then if I set the target temp as lower than the current water temperature, then it sets the output higher and higher; which is correct I guess.

I should be able to set the target temp to 35C and it should set the fan speed low to start with and then increase output as the temp goes up right?

i have "Use start boost" turned off, minimum power set to 10%, "hold minimum power" turned off and fallback power at 100%, but nothing I do those settings changes anything.

What am I doing wrong?! Any help would be appreciated!

I’ve set my target temperature to 35C when the water temp is approx. 25C, so the fans should be minimal? Instead they are going up to 100% which isn’t right, I just don’t know why that’s happening.

Yes they run off a powered PWM hub. So maybe the pump is sending out too low / no PWM signal?

But then I have the minimum set to 10% so that shouldn’t be happening either?

OK I think I sorted it by turning "Hold minimum power" on. I thought I had tried that before, but now it's working as expected.

Thanks for the help!