Examine temperature stripping: Thick or harmed weather conditions stripping can stop tight closure; trim or switch as necessary. Indications of a defective limit switch contain the door not opening or closing absolutely, reversing way unexpectedly, or the motor continuing to operate after the door stops. Inconsistent halting points or failure https://youtu.be/wSkWTAdm-Gg?si=pR5EXdjVuNYjtHN7