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peterpete190, Auto Technician
Category: RV
Satisfied Customers: 28250
Experience:  Over 17 years diagnosing and repairing various model vehicles.
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I have an onan generator, HGJAB, year is 2003. I have a

Customer Question

I have an onan generator, HGJAB, year is 2003. I have a fault code of 37, and the manual states, Invalid Genset Configuration Fault/ wrong frequency/rpm ratio. This generator ran 8 straight hours with both motorhome A/C on full tilt, and never failed. Today however, and two weeks ago when the same thing happened, the ambient was over 90 degreees Farenheigt. It was cooler when the thing ran 8 hours no trouble. The genset door panel is on as reccommended. Any ideas? I am certain that temp is creating the problem
Submitted: 1 year ago.
Category: RV
Expert:  peterpete190 replied 1 year ago.

My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.My info is somewhat limited on your model here but I had seen no one else has responded and would like to see if I can help here.If at any time you feel that I cannot help with this please let me know.

Some models use an rpm sensor and if the rpm sensor is failing/acting up (over heating as it may be weak) this can cause this type of fault here in allot of cases.This will have to be checked into/tested to pinpoint which component is the cause here and then from there the affected component replaced to correct this issue.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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