LG refrigerator error code E and rF

Lg model number: LFXS32726s /02

i unplug for 12 hours and plug back and error show after an hour

i replaced Harness Assembly EAD62885101 and error came back again

replaced whole Assembly blue light and Evaporator Fan Motor and etc whole top part of back cover and error came back.

I replaced LG Defrost Heater Assembly MEE62805103 and error came back after two hours.

I am thinking to replace EBR78643414 Refrigerator Electronic Control Board .

anyone has idea or what else can done to this error E next to Refrigerator and eF next to Freezer on on display