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Old 22-10-2020, 07:15   #1
TMK
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Join Date: Apr 2020
Posts: 15
Garmin autohelm

Getting error, rudder position data invalid

I have never had this unit working. Using Garmin ghp12 autohelm, ghp10 interface, Garmin class a drive. I had a blown fuse at the drive(7.5a). I changed it, still getting this error. All connections look clean. Looks to be nothing damaged or bent.

Wondering if I should open up the drive to look for a loose connection, looks like just plastic shielding on the drive.

Any thoughts?
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Old 22-10-2020, 14:58   #2
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Location: Lake St. Clair, cruising Cape Breton
Boat: Endeavour 37
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Re: Garmin autohelm

Have a good look at the joint in the wire on the rudder position sensor. Mine was heat shrinked. Between the plug and sensor. New from factory was bad. I resoldered it and presto.
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Old 22-10-2020, 15:20   #3
TMK
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Re: Garmin autohelm

Good advice. I’ll inspect before I rip it out.
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