On Mon, 13 Jul 2009 10:15:49 GMT,
(jamma-plusser) wrote:

My APM6855 Fridge Freezer has been playing up for years with the usual
problem common to this model, ie fridge not cooling ('fixed' by
powering off defrosting the unit the 48 hours). It has been increasing
in frequency and now fails about once every two or three weeks.

It's just failed again and I thought I would remove the inside back of
the freezer compartment when the fridge has just started to warm up to
see what might be going on.

First, the fan has NOT frozen up, there's no icing on it or it's
mechanism and it rotates quite happily (I can hear it when the door is
shut and see it spinning down when I open the freezer door - it won't
of course spin with the freezer door open as it's not supposed to). As
the fan is okay I haven't photographed it.

I've taken a couple of pictures of the inside of the freezer area when
the problem has occurred (with the panels removed of course!).

First, here's a close-up of the top of the area:

http://i59.photobucket.com/albums/g3...pontoparea.jpg

and a picture of the whole of the freezer area:

http://i59.photobucket.com/albums/g3.../wholearea.jpg

Can the polystyrene block be pulled out, or not until the ice has
defrosted? It's currently rock solid with ice behind the block (I can
tell this as looking under the gap at the bottom I can see the ice at
the bottom of the metal 'matrix').

Once ithe polystyrene has been removed, should there be anything to
stop me from measuring the resistance of the heating element to at
least check if that okay?

Nothing apart from the usual H&S issues (i.e. unplug it first!).

I suspect the 'usual', ie a thermistor problem or possibly the main
control PCB in the top of the unit.

I think your diagnosis is very likely to be correct.

I recommend buying a separate fridge and freezer next time, failing
that avoid the frost-free models.

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