Drain sink, fills bath tub?

[flubyu]

Guys and gals, in the process of enjoying a 5 night stay in our Premier 31bhpr and while doing dishes (sink about half full) I pulled the drain plug and heard a gurgling sound in the bathroom, went and checked only to find most of the water from the sink is in the tub. As fast and the water filled, it drained. I had just drained the grey tank so i know it wasn't full. Thoughts?

[GaryWT]

When I forget to open the grey tank when we arrive we sometimes have water in the tub after a couple showers and washing the dishes. But if the tank is empty this is strange. The only thought that I have is the sink and the tub are connected by a Y prior to the grey tank and there is a blockage between the Y and the tank. This would force the water to go to the tub until it slowly went through the clog, totally just a guess.

Try it again to see what happens. Maybe snake the line if it happens again.

[Steve S]

I had the same problem twice, mainly because of my long hair clogging the pipes.
What I did that works is take the shower head, stick it to the shower drain and blast the water for a good 5 mins and bingo it cured all the problems

[flubyu]

Thanks for your input! I'll give the shower head idea a try.

[cw3jason]

You mentioned just draining the grey tanks. Did you forget to close the valves after draining and the galley grey is flowing downhill to the shower grey? Just a thought.

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