Heading suddenly went out about 90 deg to east on Raymarine nav setup. [C80 Display, ST60+ Wind, ST6002 SmartPilot.] My first instinct is that there is something interfering with the compass. I can't find the compass. Second, when I engage the autopilot, the error code "NO COMP" pops up on the autopilot screen. GPS knows where the boat is & GOG & SOG are good. Any help is appreciated.
Raymarine Nav issues on 2009 B31
- Thread starter Helmer31
- Start date
Your Fluxgate compass has a bad connection or is shot .If you have a rear bed sometimes installed under it ,sometimes a label
New systems have eliminated the compass , you will see the hook up at course computer, follow the wires.If it is shot check out ebay can find cheap
New systems have eliminated the compass , you will see the hook up at course computer, follow the wires.If it is shot check out ebay can find cheap
Not true.
EV-1 & EV-2 SPECIFICATIONS
Sensors 3-axis digital accelerometer | 3-axis digital compass | 3-axis gyro digital angular rate sensor
Check the fluxgate compass and the wires going from chartplotter to compass. I just replaced mine, same type of issue, which may have been wires or compass itself, but I didn't have time to trace. Use this to check the compass.
http://www.raymarine.com/knowledgebase/index.cfm?view=3798
http://www.raymarine.com/knowledgebase/index.cfm?view=3798
On our 2008 343 the fluxgate compass is in the portside locker in the rear cabin, a strange location I think, but it seems to work OK. If you haven't found yours yet, try looking there.
The fluxgate compass on my 323 is located in the same place. It goes bonkers if somebody hangs something in there on a metal hanger.
Was sailing on a friend's boat and the autopilot kept going crazy--90 degrees and more out of whack. I looked to see if any metal was near the fluxgate and all looked good. Still kept happening. The problem turned out to be the metal frame in one of those folding seats...it was situated in the cockpit but in a spot that happened to be right above the fluxgate.
Find the fluxgate compass and make sure there's no ferrous metal near it. T'hose newer, three dimensional digital compases are still fluxgate compasses, just much more sensitive, Keep magnetic metals away. COG & SOG are GPS signals. Less sensitive and of less interest to AP than heading, boat speed, apparent wind, ect.
Also try re-running the compass calibration. That will fail if the compass has failed. Then check the wiring, more likely a wiring failure than a compass failure.
Also try re-running the compass calibration. That will fail if the compass has failed. Then check the wiring, more likely a wiring failure than a compass failure.
Thanks Guys,
Measured resistance between conductors, all out of spec. Opened compass case, unplugged & re-inserted ribbon connecting
gimbal to edge connector leading to wires. Everything came back to life. Absolutely no signs of corrosion, moisture or dirt
but a poor connection none the less.
Measured resistance between conductors, all out of spec. Opened compass case, unplugged & re-inserted ribbon connecting
gimbal to edge connector leading to wires. Everything came back to life. Absolutely no signs of corrosion, moisture or dirt
but a poor connection none the less.