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Side fans keep turning off...


jame5j

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Posted · Side fans keep turning off...

Hi Guys!

I'm new here, just got my UM2 yesterday. Been having what I Imagine are the usual teething problems for beginners: prints not sticking, stringing, filament jams etc but Ive just started my first big print (20+hr estimate) and I've noticed that the side fans keep turning themselves off.

Every now and the side fans set themselves to 1-3% speed (but are actually off). I had set them to be on and at 100% in Cura and have reset them on the machine a few times now but after about 5 mins the set themselves back off... Any advice?

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    Posted · Side fans keep turning off...

    ...

    I had set them to be on and at 100% in Cura and have reset them on the machine a few times now but after about 5 mins the set themselves back off... Any advice?

     

    In Cura there is an option "Fan full on at height (mm) (in the "Cool"-section of the expert-settings).

    Can you check the value (the tooltip gives a short explanation)?

     

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    Posted · Side fans keep turning off...

    Every now and the side fans set themselves to 1-3% speed (but are actually off). I had set them to be on and at 100% in Cura and have reset them on the machine a few times now but after about 5 mins the set themselves back off... Any advice?

    welcome to the forum

    I would suggest you check the connectors to the fans by moving the black braided cable above the print head when they have slowed. If the come back to life you have a problem with these wires.

    On my printer the wires eventually pulled out of the connector blocks (I think they are only crimped in), I had to resurrect my soldering skills, if this is the problem you will need to disassemble the print head to check the connectors

    This may seem daunting the first time but its not that difficult really

     

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    Posted · Side fans keep turning off...

    Same here. I had to resolder one of them. The two side fans have a green wire and have their individual connector just above the print head. you just need to figure out which one is not working properly.

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