Started out with freezer/fridge not cooling....I cleaned condenser (fair amount of dust/debris found), created more space from the back wall, and verified all 4 evap/condensor fan(s) operation......

Refrigerator/freezer seem to be working well at this time, however my compressor runs continuously and upper section of freezer evap is freezing up.

I have replaced all 3 temp sensors due to R-6 and R-4 error codes which are now no longer present.(unverified replacement,no bench test, due to time and good prices from appliancepro.com).

I have ice maker codes R-1 and R-5 displaying however I am not concerned with the ice maker at this time,not a priority today.

I suspect defrost heater issues for the freezer evap icing up, however,not sure where to go with the compressor not cycling off and the possibility of a relationship with the 2 conditions.

Are any heater defrost parts/contols/timers etc. seperate from the the main control board?

Thank you for your help,
Steve