I have an old ST4000 Mk1
wheel pilot. When I press Auto, the
wheel slowly is commanded to starboard. If I press -10 deg, it will momentarily turn port, so I know the drive works in both directions. But then it will turn starboard until the off course
alarm activates. I have moved anything metal away from the
compass and tested the wires for resistance and they seem okay (blue to
screen <10ohm, Red-yellow and Red to green <5ohm per spec). Anyone have their
autohelm not keep course like this? I'm in the
Caribbean, so north latitude shouldn't be an issue.... As for calibration, I can only seem to change the deviation in the
compass which has no affect on the issue. I only have the manual for a mk2 and I don't get the list of different
Cal values to change as described there.
Thanks for helping!!