Re: Neff dishwasher S4466W0GB/07 FD7802 Fault code
No water in base, but overfill float was stuck at the top of the float chamber due to scale round the sides of the chamber and on the float.
Rather than strip down the water manifolds, which looks to be a pig of a job, and may well cause a leak on reasembly, not having any new O rings, Gave the chamber and float a squirt of Viakal kettle de scaler. Then waited a while for de scaler to work. 😆
Having got rid of the scale, set machine on a wash, but observed the water was not entering the sump quick enough, causing the overflow float to lift, but not quite enough to operate the overflow microswitch.
Cleaned out hose going to sump, usual gunk had collected in the pipe, retested machine all ok.
Malc