No announcement yet.

Creality Ender 3 Pro Bed Overheating

  • Filter
  • Time
  • Show
Clear All
new posts

  • Creality Ender 3 Pro Bed Overheating

    For no apparent reason the temperature control for the bed heater on my Creality Ender 3 Pro 3D printer has failed. The bed temperature starts to rise as soon as the unit is turned on, and will slowly continue to rise during printing. I have seen it exceed 100C before I shut it off.

    Of course I have been online and seen other folks have experienced this issue. I have yet to see an authoritative post that says, "This is what happened and here is how you fix it." But I have only started to research the issue.

    My guess is I'll be replacing the heater element. I'm hoping that is the issue, and not the control circuitry on the motherboard. Nor would I be happy having to reload the firmware.

    If anybody can give me a clue, it would be appreciated. I will report back on my attempts to fix the problem and how this eventually gets sorted out -- assuming that happens.

    Ed Bianchi

  • #2
    Bed thermistor loose maybe, sounds like there's no feedback to control the heater.


    • #3
      The thermistor must be working, because the info screen reads out the high bed temperatures. The break in the feedback loop must be somewhere else.

      Whatever controls the current to the heater is not shutting off the power effectively. Some of the online posters mention a MOSFET, which may be a power transistor that is supposed to regulate that current. Perhaps the MOSFET is not shutting off entirely, which would explain the slow but steady rise in temperature.

      If that is true, then the question becomes where is that MOSFET, can it be replaced, and will that fix the root problem? Or is there some other issue that damaged the MOSFET, or keeps it from working properly?

      I have just begun exchaning emails with Creality tech support. We'll see what they have to say.

      Ed Bianchi


      • #4
        That's too bad.
        I assume it's still under warranty, and you're waiting for them to resolve the issue under that coverage.

        Otherwise, open it up and look at the board. That's usually where the mosfets are, and while damage isn't always obvious, sometimes it is.

        Then again, it might be faster/easier to replace the whole board.


        • #5
          Would you believe the one year warranty was up 3 days ago?

          Ed Bianchi


          • #6
            Wow, talk about planned lifetime to failure!


            istanbul rus escort
            sex vidio
            antalya escort
            lara escort escort istanbul escort sirinevler escort antalya
            pendik escort
            izmit escort taksim eskort lara eskort bayan bakirkoy bayan eskort
            gaziantep escort
            atasehir escort
            antalya escort bayan escort atakoy
            izmit escort
            ankara escort
            Sex ─░zle