MK3S - Preheat Error followed by Thermal Runway Error
On my MK3S, I was getting the "Preheat Error" so I followed that article and checked connections and the fuses. I didn't see anything wrong but it started working again when I put everything back together. I started a print and a couple hours in, it stopped with a "Thermal Runway" error. I haven't gone through the article on that one yet but it looks like it's more checking connections. With these two errors happening in this sequence, does anyone have any ideas as to other things I can try?
Thank you!
RE: MK3S - Preheat Error followed by Thermal Runway Error
You're going to need to measure the resetince of thermistor https://help.prusa3d.com/article/multimeter-usage_2117
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RE: MK3S - Preheat Error followed by Thermal Runway Error
Please be aware, the wires on the prusa, for the X and Y axis, Flex, a lot in normal use and this can lead to wire fatigue, You may have an intermittent break in your heater wires. ifso, the issue may only be noticeable at certain positions of the moving components.
when you test the heater continuity, try moving the wire bundle by hand and see if the readings change
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK