Leaking under bathroom floor in 2551

 I'm new to the Forum.  I picked up my 2009 Phoenix Cruiser 2551 in June and used it in June and July with no problems.  I went full-time in it August 1 and no problem until September 1 when I noticed water seeping from between the floorboards in the bathroom in front of the toilet and into the bedroom area.  I had it back to the factory and a leak in the toilet was found and fixed and we assumed that solved the problem.  Since then it has leaked sporadically. I had no leaking the first 6 nights and then it started again,  It doesn't seem to matter how level I am or what the water pressure is.  I have used a water pressure regulator with a gauge set at 45 psi and 35 psi.  The leaking seems less if I fill my fresh water tank and use the water pump than if I use the city water connection.  At this point, I'm 1000 miles away from the factory on my way to Texas for the winter.  I have communicated with the factory and they feel it might be a bad Anderson valve.  There is also now leaking into the outside storage drawer on the passenger side.  There is no leaking under the vanity or kitchen sink.  Has anyone had any thing similar?  Any ideas?

If it is leaking into the storage drawer, that's more than likely the water line that runs from the pump (under the passenger side bed) to the bathroom.   The "Anderson Valve" is on the driver's side.

While it is easy to remove about 15 screws around the edges of the bed frame plywood (that the mattress lays on) to check the water pump connections, it's quite a job to get to the plumbing under the wardrobe floor.

I would strongly suggest you get a high quality RV shop to do the work.   Your only other alternative is to go back to PC in Elkhart.   

Get the work done as soon as you can, water damage ONLY gets worse with time.

No one wants to hear this, but I expect it is going to be an expensive repair.

There is an access door under the passenger side mattress where the pillow sits, closest to bathroom. Look through there with a flashlight to see if you see water or leak going to the rear bathroom.  Also, if you leave your pump on and there is a leak in the plumbing the pump should cycle on/off.  If the pump does not cycle the leak would be before the pump.  Perhaps the water tank is leaking somewhere.  You will be able to see the water tank from the access hole as well. 

Ron