The situation I ran into with my Duet was that after the drain, the machine would balance enough to go into spin and ramp up, but the water that was extracted would spin between the basket and outer tub, tripping the flood pressure switch which made the washer stop spinning while the pump took care of the water. With the wide ball valve sump area, the hose from the outer tub to the pump protector and all of that in front of the pump, there is a lot of area before the pump that is filled with air after the tub drains so the pump cannot simply suck the water out but has to deal with the water displacing the air above the pump before the pump can deal with the water. I wonder if some manufacturer should experiment with the machine going into distribution speed before the drain valve opens or the pump starts.
While not foolproof, my Creda does something superior to what the Duet does. When it balances and briefly ramps up to spin, a lot of water is spun out of the load. The machine slows the spin, but the drum continues to revolve fast enough to hold the load against the drum while the water drains away. Once the water is pumped out, the spin resumes. The spins between the rinses are not high speed spins, but it uses this same procedure before going into the final 1000 rpm spin. The machine only has to balance once for each spin period. This would be an even bigger pay off for larger drum machines because they often have a more difficult time balancing.
This is enirely different from the design of the Bendix and Westinghouse front loaders made in the United States where the sump stayed filled with water just above the pump and the pump was more powerful so the pump could handle the surge of water as the spin began.
Invariably the successive attempts to spin in the Duet after the first one is aborted due to the surge of water had balance issues which delayed the spin periods.
ONE RINSE?! My Duet's Whitest Whites cycle gave three rinses which was one more than the Normal cycle gave.
