Kitchen aid KSSC48FMS01. The unit stopped working a week ago had a repairman out he said the compressor was getting no power and needed a new inverter. Replaced inverter and now compressor turns on and freezer gets cold but fridge won't cool below 43 degrees. Any ideas what the problem is? Last year unit broke down and replaced compressor, heat loop, evaporator, heat exchangers and refrigerant.