Gate Type: Swing
Model: 1500, 1550, 1551, Titan12L, Titan12L1
Control Board: 636
What might show on the Control Board Display: nothing unusual
What you should check: Are both the actuators plugged into the board correctly with the Master on the right hand side and the Slave on the left hand side. OR Are the dip switches set correctly with 4 and 5 set to "off"
Cause of the problem: Actuators not connected correctly and/or dip switches set incorrectly
Next Step you should try: Move the actuator plugs to the correct sides and fix the dip switches. Then retest the system.