Hi
I have a problem with my refrigerator.
The symptoms are as follows:
-The freezing compartment doesn't freeze (temp is above 0 centigrade)
- There is frost on one of the compressor pipes.

some details on the fridge:
it's a non-freeze fridge. There are 2 t-stats in the main section. There is a small air tunnel between the freezing compartment and the main section that is open and shut by one of the t-stats.

I have already filled the system with ***** (waist of money), but it didn't help.

I'd appretiate any help.
If any other details are needed please tell me.
BTW the fridge is an Israeli model (I live in Israel) Amcor XL500, if this helps.

Thank you
Gaby