Hi, at the bottom of the dryer there is a removable condenser cartridge/ unit that the heated air is blown through, this should be washed through periodically. The casing that it slides into has a space at the back which the pipes that rise to the water tray come out of at the rear of the machine. the water is accumulating in this space instead of in the tray.
Hi, O.K I have located the problem, there is a pump at the back of the dryer , operating but the rotor vane has broken off. Thanks anyway.