Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 31-10-2016, 06:30   #1
Registered User

Join Date: Oct 2016
Posts: 1
Need Help Simrad AP20 Autopilot

Yesterday, our simrad ap20 autopilot was acting up. Noticed that the rudder indicator on the ap20 display was bouncing around wildly from port to stb while the boat was on a steady course (auto pilot in standby mode). Figured it was a loose rudder sensor as this has happened before. Checked it today, and it is still tight on the rudder and the sensor mount. Couldn't find any loose connections on the circuit board either. At the dock today, the rudder indication seems correct when I move hard over port to starboard and back to center. Rudder test in the setup menu also indicates OK

Trying to figure out if the sensor went bad internally or if this is an indication that the main ap20 circuit board has failed. Units have performed flawlessly for 16 years.

Any help anyone can offer would be greatly appreciated.
kurtzr is offline   Reply With Quote
Old 31-10-2016, 07:50   #2
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 8,172
Re: Need Help Simrad AP20 Autopilot

Could also be a corroded wire terminal. Check all your connections from the rudder sensor to the AP.

Rudder sensors are, so far as I know, adjustable resistors. They can wear and the detritus can cause them to become erratic. They may react differently at the dock than in a seaway.

The link below is for an RM rudder sensor but you may be able to find the test procedure online for yours.

Actually I may be wrong that it is just a variable resistor. Check out this thread.

Simrad Robertson AP20 Help
DeepFrz is online now   Reply With Quote
Reply

Tags
autopilot, simrad

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Simrad Robertson AP20 HELP!! fishbait58 Marine Electronics 1 10-11-2015 11:04
Simrad AP20 Autopilot Control Unit Bill Connolly Marine Electronics 4 02-11-2012 02:58
want to buy Simrad Autopilot AP20 MY Zerlina Classifieds Archive 7 06-05-2012 13:11
Simrad Robertson AP20 Help Uncle Buck Marine Electronics 9 19-11-2010 09:22
Need Simrad AP20 Control Head... gbanker Marine Electronics 7 19-05-2010 11:23



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:33.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.