Dune
Senior Member
1993 vintage Onan 20 kw has developed a short in the start system such that pressing start /preheat rocker switch will instantly trip the red beaker in either mode . Anyone else ever have this problem and if so what did you find for cause ?
I've already examined inside the main electrical box and checked continuity on all switches and trips and found no smoking guns yet. Wonder if one of the sensors has gone bad .... overheat sensor seems ok but are there others like for low oil level or such ? Also, who to call ?
FWIW, the problem started when the gen had been running perfectly for a few hours and just shut don suddenly. I found the white D.C. Breaker was tripped but resetting it didn't help as the red D.C. Rocker switch continues to trip the instant gen start or gen preheat is pressed.
I've already examined inside the main electrical box and checked continuity on all switches and trips and found no smoking guns yet. Wonder if one of the sensors has gone bad .... overheat sensor seems ok but are there others like for low oil level or such ? Also, who to call ?
FWIW, the problem started when the gen had been running perfectly for a few hours and just shut don suddenly. I found the white D.C. Breaker was tripped but resetting it didn't help as the red D.C. Rocker switch continues to trip the instant gen start or gen preheat is pressed.
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