Onan Generator Won't Stay Running
Good morning, I have a 96 Bounder, 35ft. Yesterday my wife decided to to run out house carpet cleaner in the coach off of the generator. The generator shut down. Now when I turn ithe generator ...
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The little fuel pumps on these guys are notorious for going out. Look for the wires to it and touch a 12v source to them manually and listen to the pump.
It should sound clackity-clackity, then get softer until puffa-puffa-puffa, when the line is primed.
About $50 for after market.
I installed a new one and added a relay and switch labeled "prime" on the outside panel.
The fuel lines drain and dry and your genny is cranking away while the fuel pump primes the line. With a priming circuit, just prime it and it usually starts in about a second instead of 6 seconds or more of cranking.
The OTHER most common thing I know is if it isn't putting out 120v. Look for a breaker or such in the generator housing.
The Onans' control board will run the fuel pump on 12v control circuit and start the generator, then after a few seconds it transitions the control of the fuel pump (on the board) to 120v output. No 120v output, fuel pump turns off, generator shuts down.
All this is from an aging memory, but I think their troubleshooting steps outline the transition/stalling part.
It should sound clackity-clackity, then get softer until puffa-puffa-puffa, when the line is primed.
About $50 for after market.
I installed a new one and added a relay and switch labeled "prime" on the outside panel.
The fuel lines drain and dry and your genny is cranking away while the fuel pump primes the line. With a priming circuit, just prime it and it usually starts in about a second instead of 6 seconds or more of cranking.
The OTHER most common thing I know is if it isn't putting out 120v. Look for a breaker or such in the generator housing.
The Onans' control board will run the fuel pump on 12v control circuit and start the generator, then after a few seconds it transitions the control of the fuel pump (on the board) to 120v output. No 120v output, fuel pump turns off, generator shuts down.
All this is from an aging memory, but I think their troubleshooting steps outline the transition/stalling part.
