I inadvertently tried to start the propane Onan generator while still hooked up to shore power, and since then I haven't been able to start the generator from the inside of my Plateau. From underneath the RV I can open up the generator door and start the generator. Once running, the running light will show on the switch inside the cab and the switch will allow me to shut down the generator - it just won't allow me to start it. Do any of you have suggestions on what to look for? Thanks for your help.