Finding water leaks.

[rbpru]

The week when flushing antifreeze, I had a pinhole leak in the hot water line where the pipe came through the floor under the bathroom sink.

I fixed it, but the pump cycles about every two minutes.

That probably means I have another leak. I can close hot water valves at water heater to isolate hot or cold but then what?

The trailer is 9 years old and this the first water lead I have had.

I am pulling the access panels and hoping it is not in the subfloor.

Any suggestions?

[midnightsadie]

X@ do those things befor you start taking the rv apart.

[Cobra21]

Could also be check valve between city water or tank water. Make sure you have the cap on the exterior city hose fitting on the outside of your camper.

[Lynnmor]

The check valve in the water pump may be leaking.

[Big_Dog2]

I once had a similar issue. I was purging the water lines with fresh water, then left the pump on to see if there were any leaks. The pump cycled every one or two minutes. I had not yet filled the water heater and was flushing the system in by-pass mode. I was unable to find any leaks anywhere. I filled the water heater with water and then left the pump on and the pump cycling stopped. I never did find a leak anywhere and have concluded that the by-pass valve must have been leaking very slowly into the empty water heater. Once filled, problem gone. I sincerely hope your issue is resolved as easily and cheaply as mine. Hope this helps.