Hot water problem.
I am a new owner of a Flagstaff 625D popup.
We took it out for the first time this weekend, and there is a problem with the hot water.
When you turn on hot water at any source (sink, shower, etc) you get hot water for about 5 seconds, then it goes totally cold.
I know the water in the tank is hot becauses the hot water heater ran for about 25 minutes when I first turned it on.
I thought maybe it was air, but no matter how long I let the hot water run it never got hot.
It you wait awhile (an hour) you get another 5 seconds of hot water again.
Any ideas what might be the problem ?
P.S. We were using shore water through a pressure regulator.