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I have the same problem. My GE/Samsung pfsf6pkxabb is not cooling or keeping cold fridge or freezer. I have replaced the control board, the PCT relay, and the display give me a error of 89 88 which may be the condenser fan motor how can I be sure before I replace it too? If so where do I get the part? When I plug it in the fan works sometimes and brings the temp down to 32 freezer/54 fridge or even 0 freezer/ 36 fridge then cuts off and doesn’t come back on to cool. Can someone please help? I live in Vancouver, WA. Also, does anyone know someone local in my area that can or may diag for me?

Sounds like your fan motor might have a problem. Or the relay that controls it. As for repair techs, there are multiple. https://www.mrappliance.com/vancouver/ is one.