Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Code 15 is Under Frequency. It is usually caused by the set running slow. You will need a frequency meter to properly test this. Please let me know what else I can help you with in this matter. I am here to help anyway that I can.
Here is a troubleshooting guide for the Generator. I will include a 2nd link on frequency adjustments after this onehttp://www.flightsystems.com/pdf/onan-rv-troubleshooing-guide.pdf
Here is a 2nd weblink more info: http://www.dieselserviceandsupply.com/Generator_Frequency_Conversion.aspx
Have you solved your issue as of yet? I am here to help any way that I can. PLease let me know if there is anything I may do. If problem is solved, hope my answer was of some assistance. Please RATE me. I strive to be the best, ***** ***** rating will help me to do this. Thank you and have a good evening.
Okay, Sorry was unable to help you in this problem. I hope you get it figured out and repaired promptly. Have a nice day.