Please give us a few more details.
- Is this RV new to you? Has it worked as expected since you bought it?
- Where is it hooked up? (campground, your house, storage yard, etc...)
- What type of electrical service does the coach have (50A or 30A)?
- How is it hooked up? (For instance if 50A is it connected to a 50A to 30A adapter, then connected to a 30A to 15A adapter, then plugged into a 15A outlet or is it plugged into a dedicated RV outlet, etc...)
- Have you tried it in more than one location/outlet?
- If its plugged into anything other than a dedicated RV outlet, is the outlet its plugged into a GFCI protected outlet?
Answers to these questions will help to provide troubleshooting tips.
There are multiple possibilities here.
Another question that might seem oddball, what type of refrigerator do you have? For a 2008, unless it's been retrofitted, I would expect it to be an RV gas/electric but if you have a residential refrigerator (compressor, doesn't operate on propane) there will be an inverter that can provide electricity from battery power for the refrigerator and possibly a few other outlets when the main power is removed.
As enblethen indicated, the GFCI in the bathroom won't reset if it doesn't have power. So, that's a symptom rather than a cause.
I would start by isolating the problem to the coach or the power source. If you have 50A service in the coach, the problems you described in your original post could caused by the power source or problems in the coach. If you have 30A service, the problems you describe would almost have to be in the coach. Either way, I would still verify the source is stable and correctly configured.
There are a couple of ways to do that, but if you don't have much experience, the easiest is to get a surge suppressor with indicators. Surge protectors are always a good idea anyway. You can get one with just indicator lights or one that actually measures the voltage. The indicator lights will show you it's correctly connected and it has voltage, but not necessarily the correct voltage. In this case, just verifying if there is voltage on each leg and the source is correctly wired while you are experiencing the issues inside the coach would be very helpful in troubleshooting.
