Confirm a cable connection break by performing a continuity test between the control unit output terminals and the magnet input junction box. With the system fully de-energized, use an ohmmeter to check each conductor. An 'Open Loop' or 'OL' reading on the multimeter indicates a complete break in the copper wiring, likely caused by fatigue or mechanical stress at the cable entry gland.
Comments
Sign in to join the conversation
Sign InNo comments yet. Be the first to share your thoughts!