Charles for Model Number LFX31945ST Refrigerator and freezer are below set temp. Ref is 50 and freezer is 20. LG said to replace defrost sensor so I did, made no difference. Check old sensor and it checks good.
Answer Charles, You will want to check the frost pattern on the evaporator coils to make sure that they are not impacted with ice. If they are then test the defrost heater to make sure that it is good and if it checks ok then this will be a bad main control board. The main board part number is CSP30021077. Read More... Answered by AppliancePartsPros.com | Tuesday, August 8, 2017