Evaporator iced up. Refrigerator section warn.

Hi. I have attached the tech sheet for you. No service manual found at this time. Is the frost build up due to the unit not self defrosting? This will block air flow to the refrigerator. Is the evap fan running? Are you getting air flow to the ff section? You may have a defrost component that failed. You have the heater, bi-metal and or sensor, and the control for you defrost system. You can manual test the defrost components by jumping the correct two terminal on the control board with a jumper wire. If you your heater and bi metal are good the heat will turn on.

Hello
Can you double check this model number you set #PFCSJYCSS . We cannot find this in our system. Thanks