I bought a second-hand fridge two months ago.
The fridge was not cold enough, getting more and more ice in the freezer, and started making noise last night.
I unscrewed the freezer section and found the fan and coil were frozen.
Its looked pretty bad.
I managed to clean up some ice but still leave some at the right as it's stuck at the coil.
I have no knowledge at all in fridge.
Could someone give me a brief on how the thing on the picture works?
What's the function of the 'brown tube' at the right of the picture?
Anything I can do to prevent it from happening again?