elhajj33 wrote:
Ah, auto transfer switch. Maybe that's it. I'll google replacement :)
They are usually in a black box and you will not like the cost of a replacement.
You can remove all input power to the coach and turn off your inverter. Then you can open up the transfer switch box and clean things out. You can take a fine file and clean the contacts and then give it a try. This should make it quiet again.
Since it is working, altho it is making noise, usually a good cleaning is all it needs.
If you do not feel comfortable working on the transfer switch box, ask someone to look at it for you that knows about electricity.
