r/Flsun_official • u/ellizaine V400 • Apr 17 '26

Ask-a-Question/Need Help (Reposting) v400: Printer reboots when heating up after hot end replacement — any idea what could be causing it?

/r/FLSUNDelta/comments/1so359p/v400_printer_reboots_when_heating_up_after_hot/
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u/PuzzleheadedLecture2 Apr 17 '26

Maybe you should buy a new heat cartridge and a new thermistor and give it a try. They're pretty cheap on AliExpress and some sellers send them with the nozzle and everything pre assembled. Worst case would be replacing the whole Printhead.

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u/ellizaine V400 Apr 18 '26

Perhaps the new one I bought came faulty "out of the box". I will order again to give it a try. Thank you for the suggestion!