Onan diesel generator technical help

[MARTY BERNARD]

After parking my motorhome last fall, this spring the generator starts and shuts off within 1 second. Pulled code # 27 which I understand to mean it doesn't see output voltage. Looking for some direction concerning this. Thanks in advance!

[Ed Fernandez]

Originally Posted by MARTY BERNARD PROCART

After parking my motorhome last fall, this spring the generator starts and shuts off within 1 second. Pulled code # 27 which I understand to mean it doesn't see output voltage. Looking for some direction concerning this. Thanks in advance!

Marty;
go to the .90s section and get the contact for either Rich Beibel or Matt Shurman.Either one can help you out.That's their line of business.And they're both local.
Update.Go to the community section.They are both listed.Use the first letter of the first name to look them up. Ed F.

[pro7474]

Got so tired of getting rip off by the local cummins/onan dealer that I bought my own sevice manual here is what it says for a code 27
#1 Disconnect gen connector J3/P3 and check for electrical continuity across pins p3-1 and p3-2 replace the generrator stator assembly if ciruit is open
#2 Disconnect controller connector j2/p2 [black, inboard] and check for electrical continuity across leads j3-1-p2-7 and j3-2-p2-8 replace either lead if open
#3 Repace controller a1


Chris lamb

[Rich Biebel]

Some of the fault codes are misleading. If this is a diesel......is it a fixed speed unit or an inverter design/ variable speed unit? I am guessing it is a fixed speed style. It soundss like it lost AC output. First thing to try is shut off the breaker on the generator......if there is a short across the machines output from something in the MH, it will do exactly what it's doing. If the unit starts and shuts right off you might be able to get it to run by quickly pushing the run switch at the machine to off and then back to start/run. If it starts and stays running with a rapidly blinking red light.....it has lost AC output. I can't give you anymore info without knowing what model you have. Matt Schurman will be at M.G. this weekend and might be able to take a look for you. He runs S/G and has a red Beretta......