Thermal runaway - now extruder won't heat
In the middle of a print yesterday my printer stopped with a "Thermal Runaway" error. I tried to restart the print this morning and now the extruder won't heat (the bed heats just fine). I'm guessing that that means that my printer is dead [since I'm not competent to nor have the tools to mess with the extruder].
RE: Thermal runaway - now extruder won't heat
In the middle of a print yesterday my printer stopped with a "Thermal Runaway" error. I tried to restart the print this morning and now the extruder won't heat (the bed heats just fine). I'm guessing that that means that my printer is dead [since I'm not competent to nor have the tools to mess with the extruder].
What I forgot to include is -- does anyone have a conjecture as to what broke on my printer [my guess is that a wire to the extruder broke] and what could be done to fix the printer? Thanks
RE: Thermal runaway - now extruder won't heat
@bernard-c4
I think your thermistorwire is broken. This is a common cause of such problems. Pull the thermistor plug from the Einsy and measure the resistance. This should be 100K.
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.
RE: Thermal runaway - now extruder won't heat
@karl-herbert
Thanks for the info. I hope it isn't the thermistor -- I've only had my printer for a little over two years and it hasn't been used all that much and I've already had to replace the thermistor once [and as a non-hardware guy I found it pretty daunting. What's an einsy?
RE: Thermal runaway - now extruder won't heat
@bernard-c4
The Einsy Rambo is the printer mainboard where the thermistor is plugged. If you have a multimeter, you can pull out the thermistor connector and check the resistance.
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.
RE: Thermal runaway - now extruder won't heat
@karl-herbert
Thanks for the picture it helps a lot. I remember [vaguely] having to deal with that when I had to replace the thermistor last year. I do have a VOM and I need to dig around and see if I can find my metric allen wrenches.
Do the thermistors generally break once a year? Or is it, for some reason [I'm assuming that that's what my problem is], that my printer is particularly problematic...
Thanks for the help
RE: Thermal runaway - now extruder won't heat
@bernard-c4
The thermistor wires tend to break (especially the bed thermistor). It is best to replace them with a silicone wire (self-soldering) such as this one:
Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.