The pipe has come off the pressure switch,a round switch with wires on located inside at the top of machine. On the bottom of the switch you will see a small spout where the plastic pipe reattaches . The other end of the pipe should be attached to the pressure chamber, this is slung under the bottom of the outer drum fitting is the same as the other end (a small protruding spout) both ends usually have a small wire clip to hold the pipe securely
wirecutterman, May 2009