Close
Login to Your Account
Results 1 to 1 of 1
  1. #1
    Join Date
    Jun 2020
    Location
    Posts
    1
    Downloads
    0
    Uploads
    0

    Lightbulb Thermal Runaway While Printing Solved

    TLDR: If you’re getting thermal runaways while printing, but not while stationary, check if your thermistor is loose and try to better secure it to the hotend.

    During a print, the temperature of the hotend plummeted and the print was automatically cancelled due to thermal runaway. I discovered my thermistor managed to dislocate from the ferule that was crimped around it and which kept it in place in the hotend. I managed to reposition the thermistor in the hotend to the point where it would not fall out when printing, but was still loose in the hotend. I didn’t think this would be a large deal as the temperature throughout the hotend should be fairly constant. Boy was I wrong.

    I could not get more than 5 minutes into a print before my hotend temperature would plummet and the thermal runaway protection killed the print. I could not figure out what the problem was as heating the hotend while stationary still worked and would hold temperature indefinitely. I couldn’t readily find any information online other than definitions of what thermal runaway protection is.

    I did observe that the thermistor actually peeked out of the hotend while printing and tried to find a way to better secure it. The only way I found that properly secured the thermistor was a hotend that uses a screw and washer to hold the thermistor in place without moving. After installing the new hotend the printer started to work like normal. Something as simple as the thermistor moving a few millimeters caused temperature swings of about 30° C.


Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (0 members and 2 guests)

Similar Threads

  1. NEED HELP "Head Thermal Cutout" Fortus 400MC - how to fix?
    By moonsoin in forum Stratasys
    Replies: 3
    Last Post: 07-09-2020, 08:39 AM
  2. DISCUSSION Thermal protection for any printers
    By wisesokol in forum General 3D Printer Discussion
    Replies: 0
    Last Post: 12-29-2019, 01:25 AM
  3. Don't Know how to 3d Print? Problem Solved!
    By Bobby Lin in forum Websites Links and Videos
    Replies: 1
    Last Post: 08-29-2015, 03:21 PM
  4. DISCUSSION ElecFreaks 3D Printer: A4988 Thermal Design
    By Kathy in forum General 3D Printer Discussion
    Replies: 0
    Last Post: 06-19-2014, 05:33 AM
  5. News Light It Up with Adafruit’s 3D Print and Thermal Mapping
    By 3DPFadmin in forum Manufacturer News & Announcements
    Replies: 0
    Last Post: 04-24-2014, 03:30 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •