August 20, 2024 
I have AEG RCB53325MW fridge freezer and defrosted twice, checked the heater element for continuity, checked that both fans work, the freezer works fine. I have taken out all internal panels to see if duct has frozen up but I cannot find any opening in the fridge or freezer for air to flow from one compartment to the other. i have noticed for some time the bottom right hand corner of the fridge accumulates a small amount of ice which would correspond to where a pipe leaves the freezer and and appears to go up behind the fridge.The fridge set at eco should be 4c but depending on weather struggles to get down to 12c with few items in it. Back of fridge is not cold.. The left hand side side panel gets up to about 44c but usually 37c and cools down quite quickly to room temp. All condensation pipes are clear.It is the lack of a duct that has really beaten me as I can find no information on a fridge freezer without one.Best regards and many thanks.John
John Cochrane
I will try and help with this problem about AEG RCB53325MW Fridge Freezer,
After our phone call, it seems your fridge freezer has a cooling plate inside the fridge section. The freezer is working but isn’t cooling enough, so it’s not chilling the cooling plate in the fridge. This likely means the compressor is weak or, more probably, the appliance has lost some gas over time. I’ve included a couple of workshop manuals and the wiring diagram for your machine. However, I believe your fridge freezer is low on gas, which is why it’s not working properly. I hope this helps.
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AEG RCB53325MW Fridge Freezer Spare Parts