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CarbonCoala

Pt100 trouble after upgrading UM2 to UM2+

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Posted (edited) · Pt100 trouble after upgrading UM2 to UM2+

As the title says, i just upgraded the UM2 to UM2+ and everything looked good at the beginning. Then the Pt100 of the hotend started to fail and I got Error1. I am pretty sure that it is a problem with the connector on the sensor, not the sensor itself.

The approach "Make sure the cable is connected and check if none of the thin wires has come loose." just does not cut here I think.

Things I did so far/noticed:

-I switched TEMP1 and TEMP3 and I get a 0° readout when I connect the hotend temp sensor to the TEMP3

-There is a squeaky noise when I plug in TEMP1

-I measured the resistance of the temp sensor and it is 108 Ohm as it should be, however I needed to apply some force on the connector in order to get a read out

Thank you for any help you can offer :)

Edited by Guest

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Posted · Pt100 trouble after upgrading UM2 to UM2+

Quick Update: The sensor has a loose contact somewhere which explains why I was able to measure the 100 Ohm once but it's not working most of the time. We are getting replacement parts.

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Posted · Pt100 trouble after upgrading UM2 to UM2+

..and done. The new sensor arrived, changing it was super easy (I dreaded the braided sleeve fiddeling) and now everything works just fine :)

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