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:
If there are wires landed on the J2 fire loop, check the LED2. If it…
Refer to the installation instructions and follow the instructions
The key is turned to the armed position, but the device does not sound when…
The likely causes are that either: - Your door contact is not activating when the…
Two possible reasons: 1. Tamper plunger is not being held back by the screw on…