Schoolboy error, should I be worried?

[Minxy]

Reading this thread, I thought to ask a question.
My MH has an electrically actuated dump valve, which of course is left in the 'dumped' position at the moment.
In this position does it still draw some current?

TIA

Interesting question! Thinking about it logically it must have it's own electric supply which doesn't go through the control panel. If it was linked to the panel which was turned off the dump valve wouldn't work in cold weather.