Hi,
This could be one of several problems:
1. The filter to the pump could be blocked/partially blocked (coins, fluff, bits of paper/tissue - anything that was left in any of the pockets).
2. There could be a kink in the outflow pipe; restricting the flow of water.
3. The waste pipe (the plastic pipe that goes through the exterior wall into the drain) could be blocked/partially blocked.
Check all of these possibilities, then try it again.
SteveP, April 2009