drain pump is located behind the front kick panel behind the filter,(remove the excess water first) by placing the drain hose into a bowl then lowering to floor when water stopped undo the front filter anti clock wise use a old towel for any water spillage remove the filter then shine a torch inside to see any blockage in the pump impeller area preventing the pump from spinning, may get away with cleaning out but sometimes a new/replacement pump is the only answer.
wirecutterman, July 2009