Shelly - roller shutter changes top stop point on its own, calibration does not help

Hello
I have a problem with one sole roller shutter the other 9 are working perfectly. All the roller shutters have a Shelly control. From time to time one and the same roller shutter always moves to the top stop. This happens from day to day. The controller does not show any overload, whether I start it from the button or from the app it shows 100% opening. I have tried changing the controller and calibrating but this has no effect. When I unscrew the housing I make adjustments on the roller shutter with the position dressmaker adjustment is ok until the next self-adjustment. Then the roller shutter pulls upwards until it hits the manual stop. Then it is time again to adjust the position of the dressmaker and so on until the next adjustment. Has anyone had this happen?
AI: What exact model of Shelly controller do you have fitted to this problematic roller shutter?
Shelly 2pm
AI: What is the type and age of the motor for this roller shutter? Has it ever been replaced or serviced before?
Roller shutter 2 years old tubular motor.

You have a physical problem with the roller shutter, not the controller, and it's probably due for replacement - something's broken that's making it move.

This I am aware of only what to check? Apparently all the rivets are out of the pipe and the engine looks ok. The only thing I can think of is faulty taps in the engine only why does it happen overnight and always at the beginning and end of winter. All summer and spring quiet.

I have no idea, if you don't ditch and pull out the mechanism and look at it you won't know. You'll just be sitting there guessing and wondering.

mariuszjanczak wrote:

It happens from day to day and always at the beginning of winter and its end. All summer and spring quiet.

Maybe it freezes to the windowsill?

Lower position correct - no deformation of the leaves as with freezing. Additionally, if it froze to the sill, Shelly's overload switch would trip and stop the roller blind. It looks as if the motor turns, the roller blind doesn't rise and it 'skips', but how after a while it miraculously repositions itself again when it's warmer.