Unplug the LG fridge and wait 20 minutes - Plug back into power - Many times the code will clear or reset. If not keep reading below... -The majority of the time it is the freezer fan causing the Er FF error code. The FF error code indicates that the freezer fan motor is defective. https://removeandreplace.com/2017/08/27/lg-refrigerator-error-code-er-ff-how-to-clear/
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Unplug the LG fridge and wait 20 minutes - Plug back into power - Many times the code will clear or reset. If not keep reading below... -The majority of the time it is the freezer fan causing the Er FF error code. The FF error code indicates that the freezer fan motor is defective.
https://removeandreplace.com/2017/08/27/lg-refrigerator-error-code-er-ff-how-to-clear/
https://www.lg.com/us/support/help-library/error-codes-refrigerator-CT10000021-1441392048805