hoover d/washer still stopping in middle of prog’s

model D940 s/no 320966466.
originaly had problems with m/c not filling, went out and cleaned air chambers, p/switch, hose and chamber, reset fill valve flood switch, set it away, rinsed, washed, drained, then filled on main wash. set itself away to heat ok, then i left.
m/c shut down again, Phihdom suggested possible fill valve fault, fitted new valve, water pressure ok. set away again, done as above again, then i left again. 30 or 40 mins later cust on phone, shut down again, just wash pump going continually no water in, not advancing and hot inside. this is on the section of the last bit, for the hot drying rinse. the pressure switch is ok, have tried manualy blowing up tube during a fill cycle, and it shuts off, and resets every time. Any ideas out there lads.
TELL..