LG Refrigerator Not Cooling After Replacing Evaporator Fan?

LG Refrigerator Not Cooling After Replacing Evaporator Fan? Lg Refrigerator not cooling. Replaced Evaporator Fan and it will run for approximately 3 or 4 minutes and click off. Error still comes up like before replacement done. The error is EF FF, I can reset and will run again approximately 3 or 4 minutes. Any ideas on what to do next?? Thanks!