This is my very first post to the forum and I have appreciated reading all of the helpful comments. Thank you for letting me join.
I have a 2000 National RV Sea Breeze. I have just begun using it and working out all of the kinks, replacing washers and fixing leaks. However, I have a very strange one that I cannot seem to figure out. When I connect the city water, one of my gray water tanks fills up to overflowing in about 24 hours. All of the faucets are off and sealed. I found out because when I went out to the RV today, the bathtub was running over... I have no idea what could be leaking into that tank. It does not seem to do it when the pump is on, only when the city water is connected. (I have a pressure regulator installed.)
I have looked at the plumbing diagram and I cannot see anything that could suggest a leak into the holding tank from the city water connecter. My RV has an elaborate valving system for filling the fresh water tank or city water, water heater bypass, and that sort of stuff but I cannot see anything that would lead to my situation.
Any thoughts on where I should begin looking?
Thank you,
Kevin