UM3: Can't seem to level 2nd head

[kfsone 5]

At some point the 2nd print head got out of level, so low that even by the 3rd-4th layer the right core can't extrude anything. I've tried removing it and reseating it, no help. Tried reseating the other core. So I started running manual and automatic levels. 2nd head is still too low. I have the 1st (left) print core levelled beautifully, giving me the best first layers since I got the machine.

Am I missing something obvious?


-Oliver

-- Addendum

Today it keeps trying to autolevel with the 2nd/right print core lowered, causing it to fail. I remounted both cores, manually levelled fine, and now it's doing this: 

 

Edited May 15 by kfsone

[ultiarjan 1,209]

Think checking if the sensor is ok could be a fist step.

 

In my S5 it's under Maintenance / Diagnostics / Leveling sensor test

correction; I see you have an ultimaker3 (not S3), so it's under Maintenance / Diagnostics / Bed Level Sensor.

 

Another common issue is a not proper;ly seated cable connector in the printhead. Unscrew the back to screws of the printhead, open the cover, push the connector to make sure its seated well.

 

 

 

 

pictures are from here (USA Ultimaker manufacturer support pages);

https://fbrc8.zendesk.com/hc/en-us/articles/115004541446-Printhead-Ultimaker-3-Ultimaker-3-Extended-

 

 

Edited May 16 by ultiarjan