I have been fighting this issue for over 7 months on my Catalina 30
. The sensor unit was returned to Raymarine
in April and no issues found but they replaced the sensor anyway. I have continued to have oversteering issues with the unit, especially with moderate seas and wind
and really bad with rougher conditions. Raymarine
send me a rudder position sensor last week which is really difficult to install (their instructions really don't help much either but I was able to find some pictures on the web that helped). I had my first sea trial with the rudder sensor installed yesterday with mixed results and will try again today. I have had two other Raymarine wheel autopilots (ST 4000 and a older unit) which worked on this boat without a problem. They steered the boat more accurately then I could ever done manually. The EV1 has been extremely frustrating and consumed hundreds of hours of trying to get the unit to function, including how to upload software
updates (you must have a Raymarine MFD), moving the sensor core
, different settings and sea trials and dozens of phone
calls and e mails. If I can not get the unit to function today it will be returned!