Our Beko dishwasher has stopped working. It gets to the point of draining the water, which it does ok, but the pump doesn't stop working. Is there some sort of sensor which determines whether there is still water in the sump? Or would the pump have a sensor? Looking at spare parts web sites there is nothing about any sensors.
There should be a sensor which senses the level of water in the drum. This is usually a round housing (about 3" dia) mounted near the top of the machine. It contains a diaphragm and a microswitch. The diaphragm is deflected by the pressure of air trapped in a plastic tube (~ 3/8"dia). The pipe connects the sensor to the drum, via a 'spigot' at the bottom of the drum.
In my case, I've twice had problems simply because the hole through the spigot had become gunged-up with grot (a particular problem in hard water areas, if you don't have a water softener). As a result, the water could not get into the bottom end of the plastic tube, so there was no change of air pressure in the pipe. A five-minute poke-out fixed it.
It's electronic, no dials or knobs to turn! Pressing any buttons just resets the machine at the beginning of the cycle! But the info about something being gunged up could be useful. (and yes it's a dishwasher)
On our Bosch there's a float in a translucent plastic bucket at the side which operates a microswitch. There's also a float in the tub under the gubbins which is a final shut-off in event of a leak - operates the same switch.
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