Just dis this on my daughters w.machine, followed the tips to disconnect the four wires, turned the machine back on and it worked straight away, brilliant. Just to make it clearer hers is a built in unit.PULL OUT THE PLUG OR SWITCH OFF AT WALL. I pulled off the plinth that covers the bottom of the unit and the two adjacent units and then found the drain and filters, cleaned this out( this also could cause errors in the machine if it is too blocked up. She didnt even know this was there, bad design and installation on a new house Oxley Park MKeynes). Pulled out washing machine, was able to do this without having to turn off or disconnect water, four screws on top, two on back, lift off cover, the drying unit is about 4"wide is shiny metal runs down the middle, from the middle of this to the back there are 4 wires on spade connectors in white plastic covers on the left side, first 2 are blue, 3rd and 4th are grey and black, just pull them off the side cover them in tape or tie onto the wiring loom so they dont touch the terminals again , put the cover back on-done, whole thing took 10/15minutes.
Steve, July 2017