"pmw" wrote in message
...
The program clock had a circuit diagram next to it with 60 settings
detailed
inluding a pretty good description of each of the clock settings. THe
machine operates normally but as soon as the clock advances to a heating
setting (no. 12 on the dial) then the machine just continues cycling with
no
heating. However if I manually advance the program to no 13. the machines
functions ok until the next heating phase and just hangs there. In other
words it fills with water and drains fine but at a heating stage it just
hangs. Any clues????

thanks for your interest

pmcdw


Paul: With that description I suspect you may be getting close to the
'logic' of what is NOT happening.

Again not familiar with the product and I'm not in the UK.

So will suggest this; something 'else' may be happening in another circuit,
that becomes or is involved at and or between 12 and 13?

For example is the logic of the machine such that it will not advance
further in the overall cycle if it senses that water is not present i.e. is
there say, a water level switch that is not functioning correctly so the
machine just says, even though water may have actually flowed in, "Aha, no
water; so I won't proceed further".
OR:
Is it a function of how hot the water is; i.e. the water flows in but
because it senses some problem in the heating/temperature of the water due
to another sensor or thermostat machine says "Hey; water is too cold. I must
stop until it is warm enough". And then it never does heat up due some fault
in that water heating circuit.

That fault, as you asked originally, could include an open circuit heating
element. With electricity off you could remove the wire at one end of the
heater and measure the heater itself with a test Ohmmeter, you should get a
reading of something around a few hundred ohms (I'm not familiar with the
exact value) based on an assumption that element is around 500 watts?

However before hauling the machine out or apart you could (WITH POWER
COMPLETELY OFF AT THE CIRCUIT BREAKER) feel carefully around the water
heating element, if accessible. If it is 'crusty' or seems to have burst
slightly at some point it may be open and most likely be faulty. Since they
are normally immersed in water such a fault may not be as evident as when
the element in a cooking oven which gets red hot, goes faulty.
Cheers.