The Onan Marquis Gold 5500 is a GENERATOR
A Generator produces AC Electrical Power
CLICK HERE for a Manual that has Information about your Generator
After reading Manual.........then you can pay closer attention to pgs 29 and 31 'Troubleshooting and Fault Codes'
When you figure out WHICH Fault Code is being displayed (Level 1,2,3,4)
then you can look up what that code represents
HEREpg.23
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31