This code does not solve the problem. The problem normally arises when the roller blind goes only 50% down and up again, 50% down and up again, multiple times.
Did you get this code to work? Or did you somehow found another solution for your issue. I looks like I have the same challenge 
No, no luck so far. I have not given up though. I plan to get back to that issue. However I am hoping a developer would take a look and I am willing to send him a device if needed.
I did find few threads on this topic, so hopefully someone finds a solution.
Thank you for your outstanding instructions! I’ve almost figured it out by myself but the error I made was to trying to save value into Manufacturer code ovveride
instead Value. I know - I’m dumb. But now I have maybe even dumber question.
What the hell this swtich does above curtians control buttons?
It can be switched ON and OFF but nothing really happens.
So, how did you solve it?
And that switch… Not a clue what it is 
Well… Exactly as described at top of the post. I just made small error by puting value in wrong field but generally follow the instructions on top and should work
Hey guys, I was having all the issues you mentioned and ended up creating a blueprint to automatically calibrate the covers!
Here it is: ZHA - Automatically calibrate Zigbee covers
2 Likes
Hi,
Thank you for your effort!
However on my core os build its not even starting when I run the automation.
let me know if I can provide information to aid the resolution of this!
Error Log:
Logger: homeassistant.components.automation.zha_calibrate_zigbee_covers
Source: components/automation/init.py:688
integration: Automation (documentation, issues)
First occurred: 19:09:38 (8 occurrences)
Last logged: 19:41:10
Error rendering variables: TemplateError: Must provide a device or entity ID
Thanks!