Thanks Dave. I took the integrated door and bottom plynth off but did not remove it from the housing to get to the heater. I didn’t want to remove the machine until i had ran this fault past yourselves in case it was a common pcb fault. Thanks again.
the reed switch counts the water as it enters, acts like a water meter does for your house. so unless it comes through the sw it cant be registered by the computer. ( there is no pressure sw)
so to answer your question no you cant add water and expect it to work