went to look at this w/m this week. fault was poor wash results ie poor stain removal.did all checks pump,sump hoses,pr sw tube and heater.these m/cs do not use a lot of water to wash.lady has just started using a well known non bio due to child with skin condition. also noticed generous amount of conditioner being used.told her to ease off on conditioner as it can have a waterproofing effect esp on cottons and towels.also very hard water area.can anyone help on this one