The first
SM3D12 motor I got from
SADOUN did the same thing.It used to get stuck in the far easterly position.I had to manually push it while pushing the button on the bottom to get it to move.I returned it and the technician reported" the limits could not be set" and they send me a new motor.Since then I upgraded to a
HH120 and have had no problem with it.
Reinhold