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The commissioning guide is available on the Raymarine web site. I believe the document number is 81273-1. It can be freely downloaded by anyone, but you must register first, if you have not already done so.

I took a quick look at the guide and saw nothing about a 180 degree reversal of the compass heading. The simple first step is to realign the compass in the Smartpilot settings and see what happens next. If it works, just chalk it up to another Raymarine glitch. If not, then you will need to dig deeper into wiring and then into possible system failures.

Raymarine has a procedure for checking the flux-gate sensor available under the Q&A section of the web site. It is a very simple procedure using an ohm meter. However, the flux-gate unit appears to be quite robust. It is relatively unlikely that the sensor is the root cause of the problem.

I gave up counting Raymarine Seatalk glitches a long time ago. If you have more than simple speed, wind, and depth instruments, as many of us do, the original Seatalk system becomes more and more incapable. It is a very simple protocol that supposedly handles communication conflicts, but it appears to get confused when there are too many talkers. Most of the glitches are relatively harmless. Simply reset and go forward.

Regards,
Gene Fuller
Yorkshire Rose, C42 #870