Hi, I am after some help. My washer dryer Zanussi WJD1667W Part number 91460182500 has a fault of E20. The condenser has been fully cleaned and the filter is clear. The fan runs fine and seems to heat up for a while. All the cycles for the wash side are fine. The E20 comes on when drying only. I have done some research and all seems to point to a blockage. I can't understand as all is clear when washing. I had E10 the other day and have changed the inlet manifold as this was faulty.