Hello,
Most of the time, my heading and COG is accurate, however on occasion the heading will be off by 90 degrees or more on all instruments. I began to experience this problem with my old S3 and Fluxgate. I first replaced the Fluxgate and had the same issue. I then removed the S3/Fluxgate/NG converter (now all NG network with exception of NMEA AIS) and replaced with an ACU400 and EV-1, the problem still exists.
Photos attached show the problem. These were approx 5 mins apart with the autopilot set to a fix heading (note autopilot did not turn the boat when heading changed so it seems the correct somewhere but displays incorrectly).
Not sure what to do next, any thoughts?
Most of the time, my heading and COG is accurate, however on occasion the heading will be off by 90 degrees or more on all instruments. I began to experience this problem with my old S3 and Fluxgate. I first replaced the Fluxgate and had the same issue. I then removed the S3/Fluxgate/NG converter (now all NG network with exception of NMEA AIS) and replaced with an ACU400 and EV-1, the problem still exists.
Photos attached show the problem. These were approx 5 mins apart with the autopilot set to a fix heading (note autopilot did not turn the boat when heading changed so it seems the correct somewhere but displays incorrectly).
Not sure what to do next, any thoughts?