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High tone when Sunon 5015 blower fans are not on 100%


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Posted · High tone when Sunon 5015 blower fans are not on 100%

Hello Everyone!


I upgraded the hot end of my CR-10 with two blower fans. They are pretty loud at 100%, so I tried using them at 50%. But everything else than 100% does have a high pitched noise. If I carfully stop the fans with my hands the air noise goes away, but the high tone is still there. I read something about editing the the PWM setting in Marlin in a prusa forum, but I don't know if that is even the case with my CR-10 or where I can edit Marlin. Could that also be another cause?

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