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  1. #1
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    Quote Originally Posted by printbus View Post
    I'm just wondering about a possible thermal runaway situation. ... If I recall, that problem was with the heated bed - it would heat up OK but then in the print the bed temp would drop off just enough and for a long enough period to trip the thermal runaway condition that shuts down the print.
    I've been having that trouble myself occasionally since I started using RCBugfix. The bed heater seems to stall out, then the print cancels and the printer disconnects from OctoPi. I'm glad to hear it's a known issue, and that there's a workaround.

  2. #2
    Super Moderator Roxy's Avatar
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    Quote Originally Posted by AbuMaia View Post
    I've been having that trouble myself occasionally since I started using RCBugfix. The bed heater seems to stall out, then the print cancels and the printer disconnects from OctoPi. I'm glad to hear it's a known issue, and that there's a workaround.
    We are near the end of RC-7. I'm not sure that I remember any thermal issues in RC-7. I do remember some issues in RC-6.

    The only thing concerning thermal issues lately is this thread speculating there may be a bug in the way the PID algorithm works:

    https://github.com/MarlinFirmware/Marlin/issues/4881

    If you are having problems with your heaters doing the right thing, please let us know!!!

  3. #3
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    Quote Originally Posted by Roxy View Post
    We are near the end of RC-7. I'm not sure that I remember any thermal issues in RC-7. I do remember some issues in RC-6. The only thing concerning thermal issues lately is this thread speculating there may be a bug in the way the PID algorithm works: https://github.com/MarlinFirmware/Marlin/issues/4881 If you are having problems with your heaters doing the right thing, please let us know!!!
    So far my only problems have been with the print bed heater, and I (think I) have it on a bang-bang setup, not PID. I have my bed heater connected through a relay, so I don't think PID or PWM would be a good option. The issue is somewhat rare, though. Maybe only once in 7-8 prints.

  4. #4
    Super Moderator Roxy's Avatar
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    Quote Originally Posted by AbuMaia View Post
    So far my only problems have been with the print bed heater, and I (think I) have it on a bang-bang setup, not PID. I have my bed heater connected through a relay, so I don't think PID or PWM would be a good option. The issue is somewhat rare, though. Maybe only once in 7-8 prints.
    Right! Bang Bang mode is separate from PID. But still... You shouldn't be seeing any problems. If you are running RC-7 and see an issue, please click the 'Issues' button (at: https://github.com/MarlinFirmware/Ma...3Aupdated-desc ) and describe the problem.

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