I have a Lulzbot Taz 6 that I got off of FB Marketplace. I’ve printed several things with it, some rather large, and last night decided to try to up the speed a bit, going to 50mm/s in Cura instead of the abysmally slow 20 - 30 mm/s default. (I had been wondering why it was so slow).
A few minutes into the print, I got “Heater_ID: 0 - echo:Heating Failed” from OctoPrint. Octoprint makes it very clear that the printer is finding the error and reporting it to Octoprint:
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State: Offline after error
Heating failed, system stopped! Heater_ID: 0 - echo:Heating Failed
File:
Uploaded: unknown
Timelapse: -
Approx. Total Print Time: -
Print Time: -
Print Time Left: -
Printed: -
Files
Birdhouse_Rook_Base_T6-SINGLE.gcode
Updated: an hour ago
Size: 4.3MB
Phone_stand_T6-SINGLE.gcode
Updated: 6 hours ago
Size: 684.5KB
jewelry_display_body_T6-SINGLE.gcode
Updated: 3 months ago
Size: 54.4MB
jewelry_display_T6-SINGLE.gcode
Updated: 3 years ago
Size: 59.4MB
rocktopus_T6-SINGLE.gcode
Updated: 3 years ago
Size: 1.9MB
Free: 23.4GB / Total: 28.1GB
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OctoPrint 1.10.3 Python 3.9.2 OctoPi* 1.0.0 (build 2024.11.05.092907)
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Error reported by printer
Your printer's firmware reported an error. Due to that OctoPrint will disconnect. Reported error: Heating failed, system stopped! Heater_ID: 0 - echo:Heating Failed
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There was an error reported by your printer
Your printer's firmware reported an error:
Heating failed, system stopped! Heater_ID: 0 - echo:Heating Failed
Due to this error, OctoPrint was not able to continue to communicate with your printer and sent an emergency stop command M112 to ensure all heaters are turned off, then disconnected.
You might be able to find more information on this error and how to solve it in this FAQ entry!
Here's the last communication with your printer before this error occurred:
Send: N2201 G1 F3000 X159.32 Y197.768 E791.37337*0
Recv: Not SD printing
Recv: ok N2201 P0 B3
Send: N2202 G0 F10500 X158.613 Y197.768*70
Recv: ok N2202 P0 B3
Send: N2203 G1 F3000 X184.601 Y171.78 E792.46799*15
Recv: Not SD printing
Recv: ok N2203 P0 B3
Send: N2204 G0 F10500 X184.601 Y171.073*71
Recv: ok N2204 P0 B3
Send: N2205 G1 F3000 X157.906 Y197.768 E793.59238*48
Recv: T:223.75 /240.00 B:60.01 /60.00 @:127 B@:30
Recv: Not SD printing
Recv: ok N2205 P0 B3
Send: N2206 G0 F10500 X157.199 Y197.768*72
Recv: ok N2206 P0 B3
Send: N2207 G1 F3000 X184.601 Y170.366 E794.74655*48
Recv: Error:Heating failed, system stopped! Heater_ID: 0
Recv: echo:Heating Failed
Changing monitoring state from "Printing" to "Error"
This error is not caused by OctoPrint, it is a problem that was reported by your printer's firmware to which OctoPrint reacted!
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It looks like the gcode is getting made where the nozzle temp is being set to 240 C for some reason, and that’s usually about when it fails. I have set the material to 201 C, and even lowered it to 205 C, so I don’t know where 240 C is coming from. I’ve tried a few different slices of the same part, and they all fail a few mins in. The same gcode fails in the same spot, if I just try it again.
I tried a different part, upped the speed from default to to 40mm/s, and it ran fine for almost 2 hours.
Based on this, I don’t think I have a hardware problem, sounds like a slicer issue to me. While I’m kind of new to Lulzbot stuff, I’ve been using Cura for my Enders for many years and have not ran into this kind of issue. Nor have I ran into an issue like this with my Prusas.
My hotend is a single extruder 3mm nozzle, I think it was the first one they made for the Taz 6, but it’s called “v2.1”? The bed is upgraded to a magnetic PEI sheet. I’m using some old 2.85mm Inland PLA (not PLA+).
Back when I was trying to get my old Printrbot LC running good, I would notice heat creep up the hotend into the filament, so I had to rig up a fan to keep the incoming filament cool. The Taz 6 feeding mechanism reminds me of this issue, but there’s about 10 years of engineering in between, so hopefully that’s not related? I upgraded to bimetal heatbrakes in some of my other printers to address this issue, that’s really the only thing I could think of why upping the speed would impact a thermal sensor, but that’s kind of a reach.
I have not updated the firmware on the Taz 6, but that seems like it might be a good idea at some point. I see that I need to back up some info from the printer, so I haven’t done that yet.
I’m running Cura Lulzbot edition 4.13.10 on Windows 10. The printer has a Raspberry Pi 4 running Octoprint on it, and it has a wired network connection. I have 4 printers online right now with similar situations (2 Prusa I3, 1 custom Ender 3v2, and this Taz 6). The Taz 6 and it’s server are on a UPS.
What settings should I adjust in Cura that might fix this? I see there is a slightly new version available, I might try that.
My search has spidered all over the place, and I’m finding others with thermal runway issues, false thermal issues, etc.
