Slow leak from "Black 2 Tank Flush (opt)"
I have a 2016 Sandpiper 371REBH. In the panel where the water/tank controls are, there is a cover over a port for "Black 2 Tank Flush (opt)". Yesterday, there was a foul odor when I opened the doors to the panel. There was water in the lower plastic tray where the fresh water hose comes in. I pulled the black cover off and saw that there was a slow dripping of water. I don't have a second black water tank (that I am aware of). Any suggestions as to how to remedy this would be greatly appreciated.