HOTPOINT WD860 BURNT HOLES IN CLOTHES?

when washing cycle ended (not using dryer) i noticed holes burnt into my clothes and pieces of what looked like white ceramic tube, broken into bits about 1/2 inch long by 1/4 inch thick,and blackened on outside.these were inside the drum and i assume these burnt the clothes. i have used the washer again (empty) on 60deg to see if it still heats the water, it does,although two more bits of ceramic were there in the drum again, therefore i assume it is not the element but i have not tried the dryer as then i might get the dreaded fault code F13. Could it be the dryer element ? if so can anyone give me a part number, my husband is competent at mending electrics.