gwind wired transducer has 30 degree offset

[senglish]

Hi everyone.

I have a garmin gwind wired transducer on the top of the mast of a trailer yacht.

It was taken off the mast to repair the mounting bracket.

When it was put back on and the mast put back in place it is now showing a 30 degree offset. The unit is facing directly forward as it should be.

Does anyone have any idea what may have cause this offset and how to fix it.

For the moment I have set an adjustment offset on the nmea 2000 network to accommodate the problem but I would like to find an answer to get the correct reading coming fro the transducer.

Thanks