e30 means the hose at the back is kinked or coiled and not letting the water out. Pull out the machine undo the kink and check the filter. Then to reset switch machine off press the last 2 buttons I think xtra rince and start hold them in turn knob to cotton wash. all the kights should flash in sinc then turn back off this should reset the fault and it should start as normal. this happend to me and i fixed it. I now have error 31 but i don'tknow what that is. Hope this works for you
Sinead
December 2010
there is a thin black hose that goes from the pressure chamber behind the filter to the pressure switch.if they block or wear a hole through the hose then E30 can be logged.Pressure switch could also be faulty or pcb pressure sensor circuit faulty.common one is hole in pressure hose that goes to switch.to check this remove the lid.remove the rear half of the cabinet and visually check hose end to end for wear/hole