> >
> > > > > > Has anybody had a similar problem?
> > > > > >
> > > > > > I am guessing that whatever it uses to sense an empty sump is not
> > > > working.
> > > > > I
> > > > > > have had the side panels off and would appreciate any advice on > how
> > to
> > > > > > dismantle it further in order to investigate the problem. It looks
> > > like
> > > > > the
> > > > > > stainless "tank" has to come off, what is the best way of doing > > this?
> > > > > >
> > > > >
> > > > > It is not the sump of the main wash area that is the problem there > is
> > a
> > > > > float switch at the bottom of the machine in a drip tray that is > used
> > to
> > > > > sense when the drip tray has filled up. Usually this is water from a
> > > leak.
> > > > > With your panels already removed, you should be able to see where > the
> > > leak
> > > > > is, it is usually accompanied with a salt trail under the mechanics.
> > > this
> > > > > should be allow you to determine which part needs replacing before > you
> > > > > reassemble, the most common problem is a leak on the main wash pump
> > > seal.
> > > > >
> > > > >
> > > >
> > > > The tray is dry - spotless in fact.
> > > >
> > >
> > > OK, I mis interpreted the problem in this case it does indeed sound like
> a
> > > faulty float switch, can you see it from the sides?
> > >
> > > the float is usually a section of polystyrene and the switch is merely a
> > > micro switch.
> > >
> >
> > There are two microswitches/water level sensors, one seems to sense when > the
> > dishwasher is full (it uses a diaphragm that connects to a microswitch by
> a
> > lever arrangement, and one that looks like an over-level alarm (connected
> to
> > a float in the filling chamber and by a lever to the round polystyrene > float
> > that sits in the bottom of the tray). Both switches check out ok on the
> > multi meter.
> >
> > How does this machine know that it is empty and it is time for the drain
> > pump to stop and to go on to the next stage in the cycle? Because this is
> > what it is not doing.
> >
> > Thanks,
> >
> > Paul
> >
> > >
>
> The fill level switch (on the diaphragm) may be blocked with soap and other
> gunk so may just need cleaned out.
>
>
I have finally fixed the problem (having to do the washing up again today was a great motivator!).
It was the timer!
A (solid core) wire is spot welded to a spade connector on the timer, this wire is then soldered onto the motor that runs the timer. The wire was broken off at the spot weld on the spade connector. From the looks of a very small burn mark on the spade connector my guess is that this wire has always been broken off and was held against the spade connector by its own "springiness".
I think that this machine does not "know" when it is empty, but merely relies on the drain pump being turned on for a set amout of time (I have found this out the hard way - I have had the machine to bits, and everything checked out fine).
Thanks for all the suggestions.
Paul
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