Wierd Water Pump Problem?

Odd thing happened with my 2012 EB the other day. I was getting ready to move and went outside to disconnect everything when I noticed that there was a lot of water on the ground. A quick glance showed water dripping heavily out of the white tank inlet. I opened the door and found water coming out of the overflow hole. I immediately turned off my water supply hose and in a moment or two the dripping stopped. Being in a hurry I went ahead with hooking up as usual.



As I was driving I thought the whole thing over and wondered if I'd inadvertently left my water pump on. When I arrived I checked and sure enough the pump was turned on.



I understand how the pump pulls water out of the white tank, but why would having the pump ON let water into the fresh tank... seems counter to logic. Plus I never heard the pump running. I do notice it sounds louder than normal when it runs now. Ideas?



Also how urgent are repairs going to be? Can I wait for it to warm up or do I head to the shop? Right now it's cold - freeze coming on soon, so I've left the water hose off and have been using the water in the tank with no problems. Normally in Virginia the freezing weather only lasts for a week or two maximum, so I plan to load the fresh tank about every three to five days, and drain my gray tank/black only when needed.



Thanks for any help, Paula