Previous install was Furuno NAVpilot 511 and all was well until control heads screens fogged.
Installed in Grand Banks 42 with cable steering and using original Benmar autopilot drive motor, 12 volt reversible with clutch.
At the rudder test the 10 amp breaker opens before the wheel turns. The diagnostic says drive unit unknown and Bypass/Clutch not present. Doing the Air Bleeding routine to identify the drive unit also trips the breaker. Both control head units are properly terminated. The same wires used in the previous installation are being used. Two wires for the motor on TB-2 and the two for the clutch on TB-3. Same breaker also.
Since the rudder unit test "automatically detects the drive unit" but aborts on tripping the breaker I am stuck and need help as to how to troubleshoot.
Installed in Grand Banks 42 with cable steering and using original Benmar autopilot drive motor, 12 volt reversible with clutch.
At the rudder test the 10 amp breaker opens before the wheel turns. The diagnostic says drive unit unknown and Bypass/Clutch not present. Doing the Air Bleeding routine to identify the drive unit also trips the breaker. Both control head units are properly terminated. The same wires used in the previous installation are being used. Two wires for the motor on TB-2 and the two for the clutch on TB-3. Same breaker also.
Since the rudder unit test "automatically detects the drive unit" but aborts on tripping the breaker I am stuck and need help as to how to troubleshoot.