The arm may have been installed wrong. To reinstall the arm, remove from spindle and put rocker switch to hold open. Put door at 90 degrees to frame and reinstall the arm as per instructions.
You may also have a cam orientation issue on top of the motor gear box where the back check and latch limit switches are controlled. Follow the chart below to re-position cam:
To identify part numbers, drawings can be found in the instructions and on parts lists.
A distributor can also be found for you by calling us.
You can also call one of our go to parts distributors:
Door Service – 314-487-0800 Ext. 2
