In an earlier contribution to this discussion,
Dave Baker wrote:

It's begun to strike me that my old Hotpoint washing machine doesn't
get collars and cuffs as clean as it did 10 years ago when it was
new. Maybe it's my imagination or maybe it's just that all my shirts
are old and f**ked. There are no obvious operating problems so I'm
wondering if the water isn't being heated to full temp. Years ago I
used to use a 40c setting with perfectly good results but lately I've
started to try 50c with no great improvement. How do you measure the
water temp inside the machine while it's performing a cycle? A hand
on the glass door would be a rough and ready guide so I'll try that
next time I do a wash just to make sure it isn't stone cold but an
accurate check would be handy. Even with a thermometer on the outside
of the glass I can't see one being able to get a proper reading of
the temp inside.

If it isn't machine then perhaps it's time to try a different soap
powder.


I would have expected it to have an interlock preventing the cycle from
running until the water was up to the required temperature. Thus if, for
example, the heating element failed, I would expect the cycle not to
complete. I suppose the sensor could be faulty, and could be lying about the
actual temperature.

If the temperature is ok (and I can't think of an easy way to measure it
accurately!) are you sure that the soap powder is being dispensed properly.
Are you putting it in the tray, or using one of these spherical objects in
with the washing?
--
Cheers,
Set Square
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