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ULTIMAKER 2+ FANS


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Posted · ULTIMAKER 2+ FANS

hi there,

my Ultimaker 2+ is blocking inside the tube due to (i think) heat creep, all other parts are running fine apart from rear fan.

i have checked all the connections, they look fine, looked at the soldering on the motherboard, looks fine. and now i dont know why it wouldnt be running?

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    Posted · ULTIMAKER 2+ FANS

    If the rear fan doesn't spin you do get blocks mid-print or at the start of a newer print after things have cooled down.

    The problem is almost always in the wiring just inside or above the print head. Remove the plastic netting (slide it up or cut the heatshrink off the end if necessary and slide it up) until you find the 3 white fan connectors. The two that are connected together with a short loop are for the side fans. The other one is the rear fan. Try jiggling that connector while the nozzle is at 70C (fan comes on around 50C). Consider just cutting those connectors off (with power off) and soldering the wires directly.

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