MINTEMP Extruder 0

Discussion in 'Calibration, Help, and Troubleshooting' started by Syko_Symatic, Mar 15, 2016.

  1. Syko_Symatic

    Syko_Symatic Well-Known Member

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    I can not get rid of this MINTEMP error. have tried several times rebooting unplugging and various other things but it only seems to work once and then its back to MINTEMP again. HELP!
     
  2. Alex9779

    Alex9779 Moderator
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    Did you check cabling of your PT100 to the PT100 board and from the board to the RUMBA?
    You got Pro or Dual btw?

    If that seems ok just pull of the PT100 from the and use a multimeter to measure the resistance of the PT100. Should be round 105 Ohms at room temperature. If you can't get your multimeter contacts into the connector just connect it to the board again and use the angled PINs there to connect. Power off your printer when you do this...
     
  3. Syko_Symatic

    Syko_Symatic Well-Known Member

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    Yes I have just unplugged and plugged in all the cables to both the printer and the RUMBA (for the PT100) and am now seeing if it has made any difference. It just seems to be ditching out at 190deg. Now we wait........

    Bed is at temp.......
    Dead.

    Recv: T:160.1 E:0 W:?
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    Recv: Error:MINTEMP triggered, system stopped! Heater_ID: 0
    Changing monitoring state from 'Printing' to 'Error: MINTEMP triggered, system stopped! Heater_ID: 0
    '
    Recv: Error:printer halted. kill() called!

    Notice the weird dip not long into the code?! I have no idea whats going on!
     
  4. Alex9779

    Alex9779 Moderator
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    Well I have no experience with that but for me it looks like a broken PT100. If it heats up and shows the temp to a certain border and then suddenly a MINTEMP error occurs this means that the firmware gets a wrong value from the temp sensor...
     
  5. Syko_Symatic

    Syko_Symatic Well-Known Member

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    It is currently 120 ohms but it is probably still a little warm,
     
  6. Alex9779

    Alex9779 Moderator
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    The sounds normal. As I wrote, it may be broken if it can report up to a certain temperature and then has an undefined resistance the board cannot handle...
     
  7. Syko_Symatic

    Syko_Symatic Well-Known Member

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    That's a new board then? Or new sensor! please say board!
     
  8. Alex9779

    Alex9779 Moderator
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    Maybe heat it up and measure the resistance while it is heating to see what the value is when the RUMBA goes to the MINTEMP error?
    Here is a table in the article showing the values a PT100 has for some temperatures...
     
  9. Syko_Symatic

    Syko_Symatic Well-Known Member

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    Seems close. I got 132 around the early 80s
     
  10. Syko_Symatic

    Syko_Symatic Well-Known Member

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    UPDATE: I switched around the sensors and it's problem solved. BigBox are sending me a new one tonight so I should have it tomorrow. Then I will have to feed it through! Any suggestions on an inventive way of doing without having to fish out all the cables?!
     
  11. Alex9779

    Alex9779 Moderator
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    Hmmmm that PT100 cable is really stiff so I would try to feed it through the sleeve from the bottom. If you got some luck it will slip through the heat shrink too...
     
  12. SolidPrint

    SolidPrint Member

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    mine is dual extruders. I have the same Mintemp error when both sensors are connected but when I disconnect sensor 1 from the board leaving the power connected to both boards, it give Maxtemp error. please help me on this
     
  13. Falc.be

    Falc.be Well-Known Member

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    All PT100's must be connected at all times

    I currently only have one extruder installed on a dual machine, the second PT100 is connected and just lying in the base for now
     
  14. Kanedias

    Kanedias Well-Known Member

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    Can you post pictures of how they're seated in the hotend and the wiring on the board? After error free printing for the past while I got some mintemp errors this morning, removed and reseated the sensor and now its fine. With a multimeter you can test the sensors as someone else mentioned to see if continuity is broken.
     
  15. SolidPrint

    SolidPrint Member

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    Picture are the wiring on the board. Tested that sensor 1 no ohm reading and sensor 2 111.6ohms at 27 degree C temp
     

    Attached Files:

  16. Kanedias

    Kanedias Well-Known Member

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    if you're getting no reading then that points to the pt100 being faulty.
     
  17. SolidPrint

    SolidPrint Member

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    Ok. Thanks. I will email support on this. Hopefully can get the replacement soon.
     
  18. George Dossett

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    Well i think this is my 1st fail point.

    Stopped mid print. Now i cant get my hot end to temp. :(
     

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    #18 George Dossett, May 6, 2016
    Last edited: May 6, 2016
  19. eca

    eca Well-Known Member

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    Just started getting the error as well, one sensor shows 105 ohms and the other 53 ohms. :(
    And I was just going to do my first useful print... I guess I will have to try switching out the sensors between the two extruders and hope the replacement comes in soon for the other one.
     
  20. richgain

    richgain Well-Known Member

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    Similar problem here. Print failed mid-print with no sign of problems, now I just get "Error: MINTEMP triggered, system stopped! Heater_ID: 1" every time I turn on the printer.
    The PT100 for heater 0 reads 105 ohms, but for heater 1 I can't get any reading at all.
     

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