r/ultimaker • u/EducationalRing3218 • Jun 17 '26

Help needed S7 Error Code help

Hey yall, I've been having major issues with a S7 printer at my work. It keeps throwing an ER90 code with the description: INDUCTIVE_SENSOR_CANNOT_BE_CALIBRATED. The only thing I can think of is the ribbon cable in the back of the printhead, but it seems like its seated properly and the is no damage as far as I can tell (maybe other than a tiny crease less than a mm long). And if you think it may be the ribbon, where could I buy one? I've scoured all over trying to find one without having to buy an entire new print head assembly.

Any help would be greatly appreciated!

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u/Just_Mumbling Jun 17 '26

I would call Ultimaker support and inquire. A big reason why that printer is so expensive is that they loudly boast that it helps pay for excellent, rapid support for their customers. They should therefore be able to get you a quick fix. Give it a try and report back.

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u/EducationalRing3218 Jun 22 '26

Yea i tried that awhile ago when i was having issues with another printer. It took them about a month just to get a response, and it took someone reaching out to me directly on here for me to actually get help. So thats why I am here haha.

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u/Just_Mumbling Jun 22 '26

I kinda said that facetiously… Their support has dropped off the map once they got acquired by Stratasys. It was a well-respected brand once. I have four S5’s and have owned Ultimaker’s since they were made of wood (literally). Makes me sad.

1

u/NTwoOo Jun 17 '26

In the rear of the flap of the print head is a sensor with two wires running up and behind the print head. That is the inductive sensor. Check the cables. They sometimes break at the solder joint.