Oh, I thought I mentioned it in my post. I've wiggled the connectors, reseated everything, checked for continuity from various parts of the connector.
The old thermistor and the new one both read about ~108 ohms. I've also tried swapping the bed thermistor with the hotend thermistor (eg, swapping temp1 and temp3) but I still get the ER01.
UM2+ temp sensor error after cleaning:(
Hmm..... Personally I'm a bit lost on what to do next.
The error than seems to be with the mainboard.
Hopefully there is someone else on the forum that can help out.
You can also consider contacting one of our resellers near you to see if they can help out.
https://ultimaker.com/resellers/us
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MariMakes 204
Hey @Perchik,
I'm not sure, but I believe an ER01 could just be a loose connector on your mainboard.
You can read more about it here: https://support.ultimaker.com/hc/en-us/articles/360011640020-ER01-Stopped-temp-sensor
Can you check if these connectors are connected to the mainboard correctly?
![UM2-TEMP1-TEMP3.jpg](https://support.ultimaker.com/hc/article_attachments/5824992207132/UM2-TEMP1-TEMP3.jpg)
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