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Answered Heater failure

Discussion in 'Troubleshooting' started by robert sanchez, Dec 14, 2015.

  1. robert sanchez

    robert sanchez Active Member

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    please help, my printer started having issues printing. After a few layers it's stops printing and the heater stops heating.

    There are no issues when I'm preheating and moving the z axis up and down.

    E3d v6 volcano equipped.
     
    #1 robert sanchez, Dec 14, 2015
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Any errors? (look at the entire comm log)
    Are we talking about the extruder heater or the heated bed?
     
    #2 mark tomlinson, Dec 15, 2015
  3. robert sanchez

    robert sanchez Active Member

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    Looks like extruders heater error. I'll take a picture of the error tonight. Should I just reload the firmware first?
     
    #3 robert sanchez, Dec 15, 2015
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Well, you can that won't hurt, but I sort of doubt it will help.
    Go for it.

    The error will tell us what to look at.
     
    #4 mark tomlinson, Dec 15, 2015
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  5. robert sanchez

    robert sanchez Active Member

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    Ok I'm getting a temp drop error? Now it happening during preheat.
     

    Attached Files:

    #5 robert sanchez, Dec 15, 2015
  6. robert sanchez

    robert sanchez Active Member

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    So I just searched and saw its a ad thermistor or thermistor connection. If I use a volt meter what should I be looking owing for to trouble shoot.
     
    #6 robert sanchez, Dec 15, 2015
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    With the power off read the resistance of the thermistor.
    Should be ball-park 100k ohms.

    Try reading it while moving the extruder around by hand and see if it jumps any.
    Mine was doing this as soon as it started the autolevel dance (after preheat) on one unit and best I can figure it just cools down too far, too quick during the autolevel routine (and marlin does NOT maintain the temperature while autoleveling). For that machine I modified my startup GCode to autolevel THEN heat the extruder (and wait until temp to start printing). Bit of a pain that, but it worked.
     
    #7 mark tomlinson, Dec 15, 2015
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  8. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If you care to try that trick here is what I use:

    G28 ; home all axes
    G1 Z5 F5000 ; lift Z by 5mm
    M565 Z-0.6 ; set the offset for auto-leveling mechanism
    G29 ; run auto-level
    M109 S[temperature] ; set the extruder temp and wait


    You would alter S[temperature] to something like S200 (for 200c)
     
    #8 mark tomlinson, Dec 15, 2015
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  9. robert sanchez

    robert sanchez Active Member

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    Thank you. Wrapping gifts tonight I'll try it tomorrow.
     
    #9 robert sanchez, Dec 15, 2015
  10. robert sanchez

    robert sanchez Active Member

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    I broke down and ordered the stud thermistor from @Printed Solid. Been wanting to do that for a while.
     
    #10 robert sanchez, Dec 16, 2015
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  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I really like those :)
     
    #11 mark tomlinson, Dec 16, 2015
  12. Printed Solid

    Printed Solid Volunteer Admin
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    tks. hopefully it gets to you soon. postal service has been pretty clearly slowed down by holiday traffic these past few weeks.
     
    #12 Printed Solid, Dec 16, 2015
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  13. robert sanchez

    robert sanchez Active Member

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    Yeah normally I have a spare of everything but I I just did in my spare. We will see :)
     
    #13 robert sanchez, Dec 16, 2015
  14. Mike Kelly

    Mike Kelly Volunteer

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    Watch the temp graph as well
     
    #14 Mike Kelly, Dec 17, 2015
  15. robert sanchez

    robert sanchez Active Member

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    Back up and running. Glad I upgraded to the stud version. The old thermistor had melted and fused in the small hole. Luckily the stud uses the threaded hole only.
     
    #15 robert sanchez, Dec 21, 2015
    Last edited: Dec 22, 2015
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  16. robert sanchez

    robert sanchez Active Member

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    What is the stock thermistor value setting in the firmware?
     
    #16 robert sanchez, Dec 21, 2015
  17. Ocsff

    Ocsff Active Member

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    Robo thermister 1 same for your stud thermister
     
    #17 Ocsff, Dec 21, 2015
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  18. robert sanchez

    robert sanchez Active Member

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    Thank you all for the help. Especially @Printed Solid. The stud thermistor is the only way to go. image.jpeg
     
    #18 robert sanchez, Dec 22, 2015
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