water pump - Event Date: 06 Oct 2015

Sounds like the winterizing valve is open.  The one under the sink, connected to a short hose used for sucking in antifreeze.  Make sure that's closed.

The rest of your story is a bit confusing.  Is the potable water tank full?  What valve are you talking about outside the RV?  Which tank isn't filling?  And there is only one pump.  It sounds like you are saying there is one by the WH and one under the sink.

Check the valve under the sink with the 2-foot suction hose.  Make sure it's closed.  Fill the potable tank, turn on the hot and cold water in the sink and bathroom and let the hot run until all air is gone.  The water filling the hot water tank has to push 6 gallons of air out of the tank before you will get nothing but water out of the tap, so it can take 2 or 3 minutes.

Welcome, by the way!  If my advice is wrong or confusing, let us know.  If you've looked around here much you should see that you will most likely get your problem solved here.

TT

 I checked the hose for the antifreeze and it was open, so once I closed it and then let the tank fill, my pump sounded normal again and the water came out normally! On my model there is a release valve outside the RV that will release all the water in the tank for winterizing. Now that valve is releasing water, yay! I am sanitizing right now and tomorrow will flush it all, add fresh water and be on my way! Thanks so much for your help! 

Great!

Your dealer should have told you about the winterization valve, and how to use it. Other than that.. well.. the internet.

Your added ball valve won't hurt a thing, but also doesn't help a thing. The check valve is built into the front of the pump housing. If the winteriztion valve is closed, it's a closed system. If it's open, no harm, as has been seen by many owners who filled tanks and/or used pods a lot, before discovering it.

As far as air flow and the fridge.. if it doesn't cool well now, the issue could be airflow. If you have a problem, add another pancake fan.

Doug, thanks for this.  I read the sections that mention the suction hose.  Not to say I'm an expert, but my experience with check valves makes me glad I added the positive closure. 

I can't find the low point drains, except for teh fresh water tank drain.  Can you please point me to them?

I appreciate the help!