"inverted" pwm output

noxyd

Newbie

"inverted" pwm output

mercredi 20 janvier 2021, 04:15

New owner of a Quadro and pretty happy about it expect for one thing :
FAN1 has a strange behaviour, the pwm signal is inverted, the higher % I set the lower rpm I get. It's like that across all the pwm range, fully inverted.
I found a workaround manually drawing an inverted curve but it's not practical and the 3 other fans are working normally.

Did I do something wrong, is there a setting I triggered by mistake ?

Any help would be greatly appreciated. Thanks!

Kuminauha

Junior Member

mercredi 20 janvier 2021, 06:55

Are all fans connected to the outputs identical and same number of fans? Does the problem persist if you move from channel 1 to other channel? Just to narrow out that it isn't the fan that's behaving this way.

noxyd

Newbie

mercredi 20 janvier 2021, 15:21

Hi,

Good questions, here is what I have tried so far which I think shows that it’s not a fan issue :
- tried with 3 types of fans on FAN1 always with the same results (Noctuas NF A12x25, A12x15, A14 industrial)
- all those fans work properly on FAN2-3-4
- reinstalled Aquasuite, reset to factory default via software

Iwf

Newbie

dimanche 24 janvier 2021, 14:15

I’ve got the same issue with a noctua flan I was messing about with recently. All my others seem to work. It’s almost as I’ve shorted something on the fan.

I’ve go5 around the problem by inverting the slope of the profile but the Octo is still not reading the speed of the fan

noxyd

Newbie

mardi 26 janvier 2021, 15:10

Just updated to the new Aquasuite version X36 with firmware update and it didn't fix it...
FAN1 channel is inverted...

sebastian

Administrator