OK, I have a 2014 FR Georgetown, 351DS RV with a ONAN gas generator. Model RV QG5500. Its a 5500 watt. The power switch at the generator is solid red, no error codes are given. The dash switch flashes very briefly when trying to initiate start. THE GEN HAS OVER 2000 HOURS, SO IT IS NOT UNDER WARRANTY ANY MORE.
At the engine - I can hear the fuel pump running when I press the switch to prime the engine. The gas tank is 1/2 full.
When I press the local start switch, (it stays red) I hear one loud clink, then for about 10 seconds, a low rumbling like it may be turning over very slowly, then nothing, it stops.
I have checked the batteries and they are all charged, and have at least 12v each.
I checked the voltage at the line feeding the generator starter, and even when cranking, it remains above 12v.
I removed the plate on the bottom of the generator, and turned the flywheel by hand, it wasn't stuck, and turned freely.
All battery connections and the ground, at the generator are clean and tight.
I CANNOT SEE the starter from standing next to it, because it apparently is on the backside of the gen.
Do you think this might be a solenoid or starter problem???? Is there ANY WAY to access the them without pulling out the unit from the MH?