had a look at this one today.m/c showing f13 dispenser circuit error.m/c completely dead ie no display, door locked.reached down to check wiring on door lock which seemed ok but in doing this heard door lock click.plugged m/c back in and on it came .have ordered new lock but just wondering have i missed something else.wording of fault code slightly 😕 strange for this fault.door lock fault should show up an fdu or fdl code.paul