Sensor was indeed the problem, distance was ok but magnet position too low, somehow the sensor stopped working at the bottom end but was still working in the middle. I lowered the sensor now.
I also asked about testing of the sensor, it should work like a switch so current should flow through...
Thanks, I'm suspecting the sensor also but would not want to purchase new one without knowing if that is really the problem.
Does anyone know if the functionality can be tested somehow? I noticed that there is 7 (?) volts running to the sensor but did not see any change in voltage or resistance...
Any experience with W011 error? This occurred once few weeks ago and today it turned on permanently. Went through the cables but no problems found. I was thinking that can I somehow test if sensor SM-DUE11 is faulty, fe. should the resistance change when the magnet is close or something?
Thank you everyone for your effort, this post has been very informative! My E8000 makes this quaking/scratching noise when under load for a while (similar to this video) and I'm considering opening it for inspection. Few questions:
1. Could it be that original grease can not handle this much...