To work on an A/C unit, one really needs to take a class so you can understand how an A/C works, what you can work on, and what you can't work on. My advice would have been to take it in and have it troubleshooted, which is what it looks like you did.
I'm qualified to work on A/C units, except for the refrigerant, but I would not attempt to walk someone through it over the internet.
In fact, I feel that way too many owners propagate the plug and play around process when I think owners should be encouraged to take some time to read their manuals first, and get some training on electrical and propane basics as a first step. Bfore taking an A/C class one needs some sound electrical skills and tools, and then needs to pick up more tools along the way. And then one is in a position to do their own troubleshooting should they choose to do so.
Going to another forum doesn't change anything.
But I'm sure my comments are more irritating than appreciated.