If the arm motor stops operating properly and displays an E22 error, the arm motor was disconnected during operation. Check all wires and ensure that each has a secure connection. Check LED status lights for the lift and elbow motor, noting any red flashing lights.
Move the arm to a safe position, power down, and restart the robot. If using an Event Pro 1 or 2, use the 24V power supply to move arm 1 as needed.