Over filling
I have a 2016 coach Catalina I purchased it used our first trip when I connected my water hose to city fill and I went back later to check everything out I noticed that my fresh water tank was over fi...
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I have a coachman a couple years newer than you and I have done this twice. One was while filling and not paying attention when it filled up. The other was when I thought I had my water switch on city but it was on tank fill while we took a walk around the CG. The water overflowed for at least 15 minutes. No problems except for a lot of water wasted and a muddy mess around the motorhome. The water just goes out the top vent or overflow and onto the ground.
