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Unanswered Temps freeze during leveling then Error

Discussion in 'Troubleshooting' started by 90AWDeclipse, Mar 22, 2016.

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  1. 90AWDeclipse

    90AWDeclipse New Member

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    Iv'e been having this problem for a while now, but I was working around it. I always preheat my bed and extruder before a print. Once I start a print the temps for the bed and extruder freeze until the auto leveling is done, but when they start reading again the extruder temp has dropped from 200 to 160 and it doesn't extrude. I was running version 1.3, and decided to uninstall and get the newest version (1.5). With this new version I am now getting an error window that pops up when this happens. Any help would be appreciated.

    Error Message

    Printer Hardware Error

    Your printer is reporting a hardware Error. This may prevent your printer from functioning properly.

    Error Reported: "Error: Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set It after restarting)"
     
    #1 90AWDeclipse, Mar 22, 2016
  2. Geof

    Geof Volunteer Moderator
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    Check to make sure the thermistor and the heater are secured.

    What is your model? Any upgrades done?
     
    #2 Geof, Mar 22, 2016
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    That is not the actual error, that is the repeating one that lets you know it is done :)
    The actual error (if you scroll back through) will be "Temperature fell too much during print!"

    You need to minimize air flow around the printer during leveling (this is a marlin defect in my humble opinion).

    This startup GCode will avoid it:

    G28; home all axes
    G1 Z5 F5000 ; lift nozzle
    G28; Home Z again in case there was filament on nozzle
    G29 ; probe the bed
    M109 S[extruder0_temperature] ; set the extruder temp and wait

    That is from Simplify3D and will take the extruder setting from the process profile.
    I can't tell you for other slicers how to get the temperature variable in there, but read their docs.
     
    #3 mark tomlinson, Mar 22, 2016
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  4. 90AWDeclipse

    90AWDeclipse New Member

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    It's the pla+abs model I bought it in February of 2015. No upgrades, and the heater and thermistor are in place and I have them zip tied also.
     
    #4 90AWDeclipse, Mar 22, 2016
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It is probably not a mechanical or electrical issue.
    If it were falling during a print then, yes, that might be a hardware problem.
    This is a Marlin issue in my book. I have two printers side-by-side and one always would see this problem, the other not.

    Alter your startup GCode and forget about it
     
    #5 mark tomlinson, Mar 22, 2016
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  6. 90AWDeclipse

    90AWDeclipse New Member

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    Why do you think this just started happening though? I will try this when I get home from work. Thanks
     
    #6 90AWDeclipse, Mar 22, 2016
  7. Geof

    Geof Volunteer Moderator
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    I can dig it. I like you start up pretty sure I'm gonna have to nab it lol
     
    #7 Geof, Mar 22, 2016
  8. Geof

    Geof Volunteer Moderator
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    Ceiling fan sets mine off on occasion. @mark tomlinson has a permanent fix listed above. I always just restart and it's all good... With that being said I'm changing my start up to his as well
     
    #8 Geof, Mar 22, 2016
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  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Because it is a day that ends in a "Y"

    Seriously, no certain answer. In the pre-autoleveling firmware I never had this issue.
    Then when we added autoleveling the one printer started seeing this.

    Things I tried to avoid it:

    1) new 40w heater core
    2) replaced the wiring (and the electronics)
    3) cursed. A lot.
    4) edited the startup GCode.


    After 4, 3 never happened again.
     
    #9 mark tomlinson, Mar 22, 2016
    Last edited: Mar 22, 2016
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  10. 90AWDeclipse

    90AWDeclipse New Member

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    I entered the start up GCode and it still drops temp. Once it goes past the start up and starts the auto leveling the temps freeze. Once it starts the print the temp continues to drop to about 190 and then it starts to increase back to my set temp. I remember a while back I was having problems with my extruder cutting out because I was running to close to the temp cutout. Is there a way to lower the temp cutout?
     
    #10 90AWDeclipse, Mar 23, 2016
  11. Geof

    Geof Volunteer Moderator
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    I think it's in your firmware but I'd think you either have a weak heater like @mark tomlinson states or you have too much air blowing on your heater cooling it to fast
     
    #11 Geof, Mar 23, 2016
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  12. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Firmware controls this

    #define EXTRUDE_MINTEMP 185

    CONFIGURATION.H
     
    #12 mark tomlinson, Mar 23, 2016
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I am still an advocate for larger heater cores. The newer E3D units (except for the volcano) come come with a 25w core.
    The 40w core is simply able to do a better job.
     
    #13 mark tomlinson, Mar 23, 2016
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  14. 90AWDeclipse

    90AWDeclipse New Member

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    Can I have some more guidance with changing the min extruder temp?
     
    #14 90AWDeclipse, Mar 23, 2016
  15. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Not sure what you are looking for :)
    If you set it too low then you run the risk that you might try to do a cold extrude (which will just chew up the filament in the feed).

    I think for a normal extruder 185 is fine (I think the current Robo firmware is at 190 which is a bit high in my opinion).

    If you have a volcano installed you might want to lower it (I can extrude PLA at 175 on my volcano).
     
    #15 mark tomlinson, Mar 23, 2016
  16. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    The startup GCode I suggested will make it wait after autoleveling until the temp is back to target before starting to print.

    If it falls while printing then you have a bad component somewhere.
     
    #16 mark tomlinson, Mar 23, 2016
  17. 90AWDeclipse

    90AWDeclipse New Member

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    I want to lower it from 190 to 175. How do I go about doing this?
     
    #17 90AWDeclipse, Mar 23, 2016
  18. 90AWDeclipse

    90AWDeclipse New Member

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    I used the code you supplied, but it still drops temp. It's right around 190 so I was thinking if I make it a little lower it won't cut the extruder. Mainly as a work around until I can figure out the hardware issue.
     
    #18 90AWDeclipse, Mar 23, 2016
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I
    Edit the source:


    #define EXTRUDE_MINTEMP 185

    CONFIGURATION.H

    to whatever you want and recompile and reload the firmware.

    More instructions here:

    http://guide.robo3d.com/Wiki/ROBO_3D_Firmware_Release_Notes
     
    #19 mark tomlinson, Mar 23, 2016
  20. 90AWDeclipse

    90AWDeclipse New Member

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    #20 90AWDeclipse, Mar 23, 2016
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