[Trainer]

With a little luck, the fresh water leak is in the fittings under the burner which are repairable. To see them, look carefully under the burner with a flash light to see if you can see where the leak is coming from. Most of these lines are soldered copper lines and not prone to leaking. Check for any plastic fitting that might be used especially where the pex lines to and from the coach go into the bulkhead of the heater.

If no leak can be seen, especially if the pan under the burner is dry, then the fresh water loop is split and that is reman or replacement.

To get you motoring, remove the cold water in to the heater and loop it to the hot water from the heater. No fresh water pressure in the heater, no leak and NO hot water till fixed. But the fresh water system works, just have cold water at all faucets.

If you gotta have hot water before fixing the heater fresh water loop, get a 10 gallon 120 vac hot water heater at a box store. Place it in the basement, connect to the fresh water cold water line at the heater and to the hot water line at the heater and plug it in. You now have hot water till heater is fixed.

In anticipation of your coming here, my Bar-B Que friend has put on a brisket just for you. But don't worry if you do not come as he said he will sell it to the many many Petro workers here for the multi-billion dollar projects going on here. Just could not control myself. All the best.