Hotpoint FFU3D K Freezer working but Fridge not working

Hi All,

I have anold Hotpoint FFU3D, The freezer is working however fridge has not been working for the last few weeks. The temporary solution for the fridge to work again is to open the freezer drawer, and de-ice all the ice built up on the coil. Once this is done the fridge starts working for about a week before the same issue occurs and I have to de-ice the freezer again. I’ve done this a few times now hoping it will just work but same issue occurs.

Any ideas what might be wrong with this appliance please? I have posted a pic