hi, may be a blocked pump. switch off mains and remove plug. get a bowl and put the discharge hose into the bowl at floor level. should drain water out. remove back of machine, tilt it over and remove the large hose from the pump( circlip to remove ). be ready for a flow of water. you can have a feel round in the pump and see if anything is in there, if not , remove pump top, either screws or clips and see if the impeller turns o.k. and look for foreign bodies. put it back together and test. if still no good and machine is over 3 years old, then throw it out into the garden and get a new one, much cheaper than an engineer.
good luk,
alf.,