Another Slice Engineering 450°C thermistor heater fault issue



  • I’m getting a similar issue as the topic below, but I’ve followed the thread and I’m using the following in my Config.g:

    M305 P1 T500000 B4723 C1.196220e-7 H20 ; Slice Engr 450°C thermistor Set thermistor +ADC parameters for H1

    The H20 got my baseline reading to be ~10C at a 26C room temperature. Got my print going and it was the best print I’ve had in weeks. Then 90 min later, I got a heater fault. I looked at my temp reading right when it faulted and my hotend was set to 255C but was actually 241C.
    What am I doing wrong? Is there a data table I need to update or is that just for Marlin?

    Re: Slice engineering/Mosquito hotend thermistor settings



  • What was the heater fault message? Perhaps the temperature dropped duet to airflow from your part cooling fan?



  • @elmoret I did forget to calibrate with my fan on, good thought.
    The message was simply “heater fault”



  • @elmoret SO i tried turning the fan on and this time it wouldn't even get up to to 265C in the allotted time. Just for kicks, i put my old 104GT thermistor back in and re-ran the same M303 and it handled it just fine.
    It seems i either am missing something or the Slice Engineering thermistor i received is faulty?
    Thoughts?



  • @jallen810

    Got my print going and it was the best print I’ve had in weeks. Then 90 min later, I got a heater fault. I looked at my temp reading right when it faulted and my hotend was set to 255C but was actually 241C....................

    ........ i tried turning the fan on and this time it wouldn't even get up to to 265C in the allotted time........................

    Those two statements would lead me to investigate the heater cartridge and /or wiring thereof, rather than the sensor. The fact that you fitted another sensor might be a red herring in that it might be that there is a wiring fault such as a dodgy crimp connector which gets disturbed and either makes or breaks.



  • @deckingman I agree and should have said in my previous post, i did both tests and re-ran gcode with 2 different heaters just to verify. The slice sensor doesn't work with either and the 104GT works with both. That seems to reinforce the Slice Engineering Thermistor being faulty, am i wrong?



  • @jallen810 That sounds reasonable - either the cartridge or the wiring (bad crimp etc). Either way, the fact that it worked fine for 90 minutes would indicate that it isn't a configuration issue.



  • @elmoret @deckingman so I have a Sidewinder X1 that uses ribbon cables for power & signal. As a test I ran proper heater cartridge wiring to my Duet and once I did that, all these problems went away and I’m running my 450 thermistor with no issues now.
    In summary, y’all were right. Thanks for advice.



  • @jallen810 Thanks for the heads up and glad you got it fixed.