[mikec557]

When it rains, it pours. While I am mid trouble shooting a water heater issue, this comes along...

We sprang a slow drip from the hot water supply line coming from the water heater to the main T-connection that then feeds hot water everywhere else in the camper (2018/2019 Reflection 29RS). It's no surprise, it's the flex-hose line that goes into the plastic-T. I could go on about why the H3LL they'd use flex hose, but let's skip that for now. I cut out the T and fixed that. There's no drip and it is bone dry to the touch and paper towel test.

After finding the problem and before tackling that fix, we turned the water pressure off and on, and off, and on, outside at the campground spigot until I could get to the problem. That's when we decided we would fill the fresh water tank and use the 12v pump for our water needs because it was easier to turn the water pressure off and on as we needed. That's what brought to light the newest problem.

The water pump burps on for a couple seconds either, every 2 minutes, or every hour or two. You would think a leak would be consistent, but it doesn't seem to be. Regardless, my question is this:

I have visually felt, touched, and paper towel tested every connection, and length of pipe/hose, from the Nautilus-1 to the "T" I repaired, to the connections from there that leads to the toilet, and to the bathroom sink, and the back of the shower control valves (which is where the last leak occurred). I have also tested the kitchen sink faucet down to the floor. I cannot find a leak anywhere.

I think the leak could be somewhere between the T I repaired and where the water lines come up from under the kitchen sink about 5-6 feet away, or at a cold water line that runs to the back of the camper where there is a cold water push-on hose connector. The issue is that all of these areas of concern are unreachable and unseeable, except possibly by removing the entire coroplast from the bottom of the camper. Literally, if I can see it, I have touched it looking for a leak and I can't find a leak anywhere. Yet the water pump cycles. And I am SURE there are connectors hidden under the floor. And worse, I'll bet they are on top of the gray and or black tanks rather than under the tanks where I could get to by removing the coroplast.

Any ideas on what else to check, of methods to check short of removing the coroplast? Any war stories that may help me diagnose this?

Thanks in advance
Mike