Hello, I have several years ago a Patrick with a common freezer (the non-frost did not exist or were very expensive) that we take care of it a lot, every so often we take the ice from the freezer we clean it etc. Last year we changed the thermostat (I think, that round with a screw in the middle of the photo) and it seemed OK, except that a few weeks ago I literally formed a glacier: P as in the photo ... which I carefully removed . The result is that now it never stops, but it does not cool well, it cools little ... as if it were in 3. The freezer if everything ok. What could it be ... the end of its useful life ... the poor quality thermostat ... weatherstrips ... the back grids are cleaned as well as possible. Thank you for your help,., Since I write the exact model I did not find the label yet.