On 19/09/2020 11:16, NY wrote:
We have a supposedly frost-free freezer which mostly works as designed:
the cooling fins on the heat-exchanger remain clear of ice. But several
times over the last year, we have found the reported temperature
increasing and a lot of ice around the heat-exchanger, so we have to
take everything out (thank goodness for a spare freezer) and
defrost/re-freeze.

There is no sign of obvious blockage in the pipe that drains the
heat-exchanger to a tray above the motor/compressor.

It doesn't seem to happen at any particular time of year, and as far as
we are aware, we don't store more/less food in there or open the door
more at some times of year than another.

I'm intrigued what could cause a freezer to keep itself frost-free for
several months (with no visible gradual build-op of ice) and then
suddenly ice up.

air leak to outside.

I've got failing seals on my fridge, and occasionally its all wet inside
where it aint icy, and the temperature is 4 degrees higher than it should be

I just close the door carefully...

--
The biggest threat to humanity comes from socialism, which has utterly
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into what the world ought to be, whilst we fail utterly to deal with
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