Our fridge started to get warmer a few days ago. Because we keep medicines for my daughter, I always keep a thermometer inside. From the usual 3C-5C that I used to see, over a few days the temperature crept up to about 11C now. Things are still frozen solid in the freezer.
Before calling a repair person, I tried to assess what is going on (not a lot of experience on fridges, but in the past I have successfully diagnosed and change a blown defrost thermostat). As suspected, there is ice buildup:
But, at the same time, there is less ice close to the defroster. I removed the defrost thermostat and it tested correctly (open when cold, closed when warm). I also positively tested conductivity on the defroster.
Is it obvious what is going on?