Portable Generator open ground

185EZ wrote:
I wanted a generator so I wouldn't have to run my 7000kw in the rv just to charge the batteries and run a few things.
Amazing what you can get for $250 these days

I have a Durastar 4400 generator but the hz would vary too much and it would trip error codes on my Progressive EMS and i couldn't just plug it into the rv since it would give a fault code on my inverter.

So I bought a dual fuel Sportsman
https://www.amazon.com/Sportsman-GEN4000DF-SS-Sandstorm-4000-Generator/dp/B079RBD936http://www.amazon.com/Sportsman-GEN4000DF-SS-Sandstorm-4000-Generator/dp/B079RBD936

Works great on propane and the hz only varies from 61 to 62 hz
But the EMS shows an error code of open ground.
I even tried grounding the terminal lug into the ground and nothing changed
Everything works fine if I bypass the EMS

What else can I do to fix the open ground?

You need to connect the ground pin to the neutral pin using a bonding plug at the generator or bypass your EMS when on generator power. You can probably bond one of the 20A outlets and it will suffice.