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Onan generator randomly shuts down.
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DRR Sportsman
Picture of Mike Frizie
posted
We have a gas powered Onan generator , that random ly shuts off . It flashes a generic shut down code. The fuel pump has been replaced . I have a picture of the unit serial number of some one wants to post it for me . Any ideas would be appreciated .


Michael Frizie
ET 2471
 
Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
DRR Pro
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How old?….if you have tried everything it will probably be the $700 control board….
 
Posts: 1275 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR Sportsman
Picture of Mike Frizie
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It’s an 2003 I think . Thanks for the help.


Michael Frizie
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Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
DRR Pro
Picture of rusty
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what code are you getting the three flashes is not a code


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1466 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
DRR Sportsman
Picture of Mike Frizie
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Remind me again how to put it in diag mode.


Michael Frizie
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Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
DRR Pro
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Press the off button 3 times in 5seconds. It will blink 3times indicating diagnostics. Press button once and read code. To clear code press off button twice


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1466 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
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if this unit is on a trailer mounted in a compartment they are real prone to overheat due to discarge and inlet close togather, i built dividers on one or two ive had


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1466 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post



DRR Sportsman
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Ok. Thank you


Michael Frizie
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Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
DRR Sportsman
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[QUOTE]Originally posted by rusty:
if this unit is on a trailer mounted in a compartment they are real prone to overheat due to discarge and inlet close togather, i built dividers on one or two ive had[/QUOTE

It shuts off at random times, regardless of runtime. Also won’t restart all the time ? Acts like it’s not getting fuel?


Michael Frizie
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Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
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Mine was a fuel pump when I was having those symptoms.


Denis LeBlanc

 
Posts: 502 | Location: Manchester, NH | Registered: February 03, 2006Reply With QuoteReport This Post
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the code is the key unless it is the catch all code


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1466 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
DRR Trophy
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My onan 5500 was doing the same thing. It ended up being the Gen set control board. I bought an aftermarket one from Flight Systems and have put about 300 hours on it without it cutting off.
 
Posts: 4 | Location: Georgia | Registered: May 28, 2020Reply With QuoteReport This Post
DRR Trophy
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My 2001 Onan 7k efi still giving me fits after having it out of the trailer and checked out by an Onan certified tech with 40 yrs experience. Worked for about 4 weekends, then began running slow and belching soot...new plugs didnt help.

About to order the board from Flight Systems, as well.
 
Posts: 148 | Location: Omaha NE | Registered: October 31, 2009Reply With QuoteReport This Post
DRR S/Pro
Picture of CURTIS REED
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Rich has spoiled everyone giving answers on these problems so quickly in the past. Hopefully he will come along soon.



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2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion

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Posts: 3138 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post



DRR Sportsman
Picture of FootbrakeJim
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quote:
Originally posted by CURTIS REED:
Rich has spoiled everyone giving answers on these problems so quickly in the past. Hopefully he will come along soon.

My thoughts exactly. Rich / SCDIV1 has been our Gen Set guru on here for many years. Wink


Dan "Jim" Moore
Much too young to feel this damn old!!
 
Posts: 1098 | Location: Farmersville, TX  | Registered: December 05, 2002Reply With QuoteReport This Post
DRR Sportsman
Picture of David Gerard
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Our generator has a CO2 sensor and doesn't like to be inside a cabinet, so we made a "slide out" and no more problems.

I guess you could engineer a fan into the cabinet, but don't try and take air from inside the trailer, as it also lets out a lot of noise!
 
Posts: 450 | Location: Fullerton, CA | Registered: June 08, 2008Reply With QuoteReport This Post
DRR Sportsman
Picture of Mike Frizie
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Drained the oil , as I heard the full line is mislabeled I’ve heard. Problem still present . Is there something to this specific type of am board?

This message has been edited. Last edited by: Mike Frizie,


Michael Frizie
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Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
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really need the code.oil switch be issue.if it is one wire just unhook switch and try it


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1466 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
DRR Sportsman
Picture of Mike Frizie
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10-4. So oil pressure opens the circuit to ground. ( Hope I’m saying that right) . That’s what I needed to know . Thanks .


Michael Frizie
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Posts: 637 | Location: Winston, GA | Registered: April 10, 2002Reply With QuoteReport This Post
DRR Pro
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just read my post this is the edit oil switch MAY be the issue lol


honesty is the best policy,insanity is a better deffense
1.036, 6.16@ 224

 
Posts: 1466 | Location: texas | Registered: February 17, 2006Reply With QuoteReport This Post
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