I just assembled my Ender 3 last night, this is my first printer and I’m new to this all. After about 10-15 minutes into printing it consistently gives me a thermal runaway error. Any help would be appreciated.
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2Is the part-cooling fan spinning ? – Criggie Feb 19 '22 at 22:16
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2Photo of the machine please? – Trish Feb 19 '22 at 22:42
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The fan is spinning yea – John Gaud Feb 19 '22 at 23:00
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Could you please select an answer or answer your own question if you solved the issue? – Hacky Nov 22 '22 at 14:04
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Thermal runaway occurs when the hotend is on, but the sensor does not pickup any temperature increase. In many cases the thermistor is broken or the connection is bad. A friend of mine had the thermistor broken on his Ender 3 pro. It worked sometimes and sometimes not. Buy a new thermistor.(a few $ only) and replace it to be sure.
Hacky
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