To get schematics for Onan control board operations, visit GMCWS.org. The website offers schematics for all aspects of an Onan control board along with repair procedures and a troubleshooting guide.Continue Reading
To access the Onan schematics or diagrams, select the Tech Articles link at the top of the navigation bar on the GMC Western States Motorhome Club website, and scroll to the bottom of the page. Then select the link titled Onan Control Board Operation, where a list of different schematics is available to view. Examples of available diagrams include schematics for the motor generator, circuit board, start circuit and run circuit along with the stop circuit and LOP circuit. To view a particular diagram, choose a schematic link from the provided list. After clicking a link, a diagram is available to view in addition to a written description of how the wiring and circuits function.
In addition, the website provides instructions for testing procedures and removal, repair and replacement procedures for the circuit board. Larger images of schematic wiring diagrams are available to view at the bottom of the page without the additional written descriptions for each image. To view a larger image of the diagram, select the thumbnail image, and the diagram should open in a new browser.Learn more about Tools