Core One + Hotend Fan fail - Hardware, firmware and software help https://forum.prusa3d.com/forum/prusa-core-one-hardware-firmware-and-software-help/core-one-hotend-fan-fail/ Prusa3D Forum Discussion Board en-US Mon, 08 Jun 2026 07:40:07 +0000 wpForo 60 RE: Core One + Hotend Fan fail https://forum.prusa3d.com/forum/prusa-core-one-hardware-firmware-and-software-help/core-one-hotend-fan-fail/#post-790740 Tue, 28 Apr 2026 13:58:22 +0000  

Posted by: @meihswei

 Could this be an error with the LoveBoard?

Maybe. However at this point it's best to contact Prusa support over chat. 

]]> Hardware, firmware and software help hyiger https://forum.prusa3d.com/forum/prusa-core-one-hardware-firmware-and-software-help/core-one-hotend-fan-fail/#post-790740 Core One + Hotend Fan fail https://forum.prusa3d.com/forum/prusa-core-one-hardware-firmware-and-software-help/core-one-hotend-fan-fail/#post-790694 Tue, 28 Apr 2026 01:40:40 +0000 I recently had my Core One notify me of the Hotend fan RPM test fail during a print.  I dusted, cleaned, and made sure the connection to the Nextuder LoveBoard was good but it still failed.  No problem I thought and ordered two new fans (have a spare on hand just in case) through PRUSA.  I just got the new fan installed and it is still failing.  Could this be an error with the LoveBoard?

Any help is greatly appretiated!

]]> Hardware, firmware and software help Meihswei https://forum.prusa3d.com/forum/prusa-core-one-hardware-firmware-and-software-help/core-one-hotend-fan-fail/#post-790694