New smart effector - no fans?

sac

I purchased a smart effector from Filastruder and have just gotten around to installing it. I have a duet wifi I've been using for years.
When I went to test, the 'always on' heat sink fan didn't turn on. I rechecked all my connections, then put a multimeter on the various locations - I get 5V from the duet wifi to the effector (HF+/HF-) and after unplugging the fan connector, nothing at the Hotend Fan connector pins. Same with the parts fan, when I turn it on. Hotend heat works fine.

What are my next steps?

thanks,
-sandy

Phaedrux

Can you share your fan config?

No voltage on the fan headers?

sac

@phaedrux

I haven't changed anything in the DuetWifi config yet, one of the 'always on' headers on the DuetWifi is connected to the HF+ & HF- headers on the smart effector. It reads -5V. There is essentially no voltage on the HotEnd fan headers, that is, it reads -0.14V. If I plug the fan into those headers, it does not run, and it did run on my old effector. In fact, it should just come on when the power is turned on. I have a 12V power supply, and the 12 jumper is on.

My config.g line for the hot end fan is:

M106 P2 T50 S0.5 H1 ; Heat sink fan

thanks,
-sandy

Phaedrux

the fans on the SE are wired straight through, except that the HF has the illumination LED string in parallel with it. So more likely the problem is bad wiring, or the outputs on the Duet.

So test your fans directly connected to the Duet. If they work there, then test your wiring harness. If they work there, then it may indeed be something on the smart effector.