One side fan not working, works when pushed

[electronic_matt 0]

Ok so I have noticed one of my side fans comes on and works, the other does not unless I give it a slight helping push then it starts spinning...

Can anyone help me please?

 

[IRobertI 520]

Is this just at the beginning of the print when the fans are spinning slowly, or even when they're supposed to go full speed (after 5mm by default)?

 

[electronic_matt 0]

Hi, it happened well after 5mm, one was spinning full speed, the other was not moving, I pushed it and it started moving, seems odd

 

[th3o 0]

Sounds to me like a faulty bearing. I think the only thing you can do is replace the fan.

[bez 9]

Sometimes a tiny bit of debris can stop small fans from spinning up, I get his quite often with my RC models. It might be worth checking to see if there is a chunk of fluff restricting it slightly.

 

[electronic_matt 0]

Thanks for the replies, I tested the fans with the fan control on the menu and they all seemed to work ok, from 0% up to 100%, I turned the dial very slowly and they both started spinning together and increased in speed, I will keep an eye on it with my next print.

 

[Blizz 53]

I have the same issue, also with the right fan. UM promised me about a month ago they would send me a replacement for it. Never heard of it again. Sigh

 

[coffeecup 1]

Are both fans controlled independently? or both fans are actually connected to one PWM driver?

 

[electronic_matt 0]

Still have a fan problem, I am printing something as I write this, one fan started spinning very slowly and the other one was not moving, I waited for a few mins, still not spinning, so I pushed it around with my finger and then it started spinning on its own, does this sound like a faulty fan then?

When I test when with the fan speed control on the menu they seem ok

 

[IRobertI 520]

If you push the head around when you control them from the menu, does that make a difference? I was thinking that there might a bad connection and/or wire somewhere that is making intermittent contact? Just a random thought.