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That Onan generator will purposely shutdown under about 12 conditions if the computer senses a shutdown condition. It could also be a bad computer.
Be sure to check or replace the two condensers on the High Pressure pump motor.
And be sure to check for a shutdown code after the next shutdown. Read the manual.
The light on the rocker is the light that blinks after shutdown. This is assuming you have the same model Onan as BeBe...your hull number is close enough to assume that.
BeBe Amel 53 #387
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Thanks Bill. I will check out those condensers. I just don't know how generator can shut down without throwing a breaker?
La Bella Vita
OK, you know how difficult it is to diagnose something by email, but, I will risk being wrong:
Your problem is centered around the High Pressure pump motor. I am going to guess that the pair of condensers on top of that motor are either bad or there is a short in the wiring there.
I saw the exact symptoms on another 160L SM. The guy had recently changed the condensers and wired them wrong. I assume that you have not changed anything so I assume either bad condensers or a short. Of course you could have an electric motor problem, but check out the condensers.
Floow this link for additional info:
Let me know if this helps.