In article ,
Sparks writes:
- in fact, if you wanted to pump the water, you would need a
pump and a pressure vessel, as when the WM opens it's valve, you
wouldn't get any flow for the pump to see at that pressure, so it would
never start.

You could perhaps bypass the inlet valve, and use the power to it
to drive a pump instead (probably need a relay as they are often
driven by low current triacs with no heatsink).

Also, all machines I have seen do have a sensor to detect the water
level, otherwise if you were washing towels one day and a few t-shirts
the other day, the water level would not be the same (the towels will
absorb a heck of a lot more water!)

Some have a timer too, so that if the machine doesn't fill up within
a certain time period, the inlet is cut off and the wash abandoned,
in case this is due to the water spewing out somewhere.
(On Hotpoints, E10 error code is machine taking too long to fill.)

--
Andrew Gabriel