Erratic Temperatures

Anyone have any idea why this would be happening?



Edited 1 time(s). Last edit at 01/11/2017 01:18PM by RickRap.

Loose thermistor connection, cooling fan cycling on and off...

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

Check the thermistor and its wiring. It looks a little similar to something I reported recently: [forums.reprap.org].

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See my blog at [moosteria.blogspot.com].

I thought it could be the thermistor but I was in denial. I've been using those all-in-one thermistors with the threaded end. They've worked great on 2 of my printers and I didn't want to admit that it wasn't perfect

Just thought maybe someone would have seen this either in slicing or possibly the controller. Like maybe a bad mosfet or something.

Wires can break inside their insulation if they flex enough. The moving extruder carriage provides a perfect environment to test your wiring because of all the flexing the wires do. Connect a DMM to the controller end of the thermistor leads to read the resistance, then manually move the extruder carriage around and see if the resistance varies.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]