FIRST OF ALL, isolate electrics & water to the machine, Grab a mop and prepare for lots of water from the front of the machine......remove the filter from the filter housing by opening the housing door then unscrewing the filter, (Check your machine manual for location of filter) at this point water will spill out, let the machine empty out. Remove the debris from the filter and filter housing (get your finger into the housing and scoop out any fibres, coins etc., ensure that you remove all debris from the filter housing as the pump inlet connects to this area, Replace filter ensuring that you tighten to ensure a watertight seal (It wont need all your strength - hand tight will be enough. Apply water and electrics & try running a full program again - If the program runs normally - fault cleared, if not then suspect worn pump or possibly blockage is still present - time to get really dirty & also get a Multimeter out - beyond safe scope of average DIY as dealing directly with electrics - Hope it helps
Ian
October 2007