Bought used as having this issue. Computer was replaced by previous owner ( I have the old computer too ).
Things done do far
Verified compressor is cycling
Fan for condenser is running
Condenser coils clean
Ran diagnostics on control panel to test functions of all components ( damper, evaporator fan motor etc)
Verified no blockage for evaporator fan
Control panel shows freezer at -6 and fridge at 33. I have a feeling that the fridge thermistor is faulty. My problem is I can’t find the damn thing to test it.
I have part breakdowns for my model but the thermistor is shown in a separate illustration box.