LG  Refrigerator  Error Codes

These error code explanations can help you diagnose a problem with your LG bottom-freezer refrigerator. For repair how-to help, visit the PartsDirect repair help section, which includes repair help for washing machines, other major appliances, lawn and garden equipment, garage door openers, vacuum cleaners and more. You can also search for owner’s manuals, get advice from an expert and find refrigerator replacement parts.

Error Code Condition Check/Repair Shop Parts
Er FS Freezer sensor error Sensor and wiring connector problems Thermistor (temperature sensor), Wiring harness, main Power control board (PCB) 
Er rS Refrigerator sensor error Sensor and wiring and connectors Thermistor (temperature sensor), Wiring harness, Main power control board (PCB) 
F dS Freezer defrost sensor Sensor short or wiring problem Controller assembly, which is a component that has the defrost thermistor (temperature sensor) and the fuse for the defrost system  
r dS Refrigerator defrost sensor Sensor short or wiring problem Controller assembly, which is a component that has the defrost thermistor (temperature sensor) and the fuse for the defrost system 
Er HS Humidity sensor Sensor short or wiring problem Humidity sensor 
Er IS Ice maker sensor Sensor short or wiring problem Ice maker assembly; the sensor isn't usually sold separately. 
Er SS Pantry sensor The pantry is the deli drawer. Short in sensor or wiring problem. Pantry temperature sensor  
Er rt Room temperature sensor Short in sensor or wiring problem Room temperature sensor 
Er It System error inside ice maker Self-test ice maker routine ice maker assembly 
Er gF Flow meter error code Water pressure, flow of water Flow meter 
F dH Sensor did not get over 40 F in defrost Faulty fuse, heater, control board Controller assembly, defrost heater, relay on control board  
r dH Sensor did not get over 40 F Faulty fuse, heater, control board Controller assembly, defrost heater, relay on control board 
Er IF The fan for the ice compartment failed Icing fan blocked, ice fan motor is defective, wiring in the circuit is defective, or the control board has failed Ice fan motor, Wiring harness, Power control board (PCB) 
Er FF Evaporator fan failed Fan motor, control board, wiring harness Evaporator fan motor, Power control board, Wiring harness 
Er CF Condenser fan motor is defective Condenser fan motor, wiring or the control board Condenser fan motor, Power control board, Wiring harness 
Er CO Communication error Communication error between main board and display board Display control board, Power control board, Wiring harness