LG bottom-freezer refrigerator error codes
These error code explanations can help you diagnose a problem with your LG bottom-freezer refrigerator.
Error codes appear on the control panel display when the electronic control board detects component failures. When an error code appears:
- Match the error code on your refrigerator with the error code in the chart below.
- Make sure that the condition listed with the error code is the same as the symptom(s) shown by your refrigerator.
- Read the DIY advice to learn how to troubleshoot the issue and determine the problem part.
- Follow repair guide instructions (if listed) to fix the broken part.
| Error Code | Condition | DIY Advice |
| Er FS | Freezer sensor error | Check/Repair Sensor and wiring connector problems.Possible parts Thermistor (temperature sensor), Wiring harness, Main power control board (PCB) |
| Er rS | Refrigerator sensor error | Check/Repair Sensor, wiring and connectors.Possible parts Thermistor (temperature sensor), Wiring harness, Main power control board (PCB) |
| F dS | Freezer defrost sensor | Check/Repair Sensor short or wiring problem.How-to help How to replace a refrigerator defrost control assembly Possible parts |
| r dS | Refrigerator defrost sensor | Check/Repair Sensor short or wiring problem.Possible parts Controller assembly, which is a component that has the defrost thermistor (temperature sensor) and the fuse for the defrost system |
| Er HS | Humidity sensor | Check/Repair Sensor short or wiring problem.Possible parts Humidity sensor |
| Er IS | Ice maker sensor | Check/Repair Sensor short or wiring problem.How-to help How to replace an in-door ice maker on a French door refrigerator Possible parts |
| Er SS | Pantry sensor | Check/Repair The pantry is the deli drawer. Short in sensor or wiring problem.Possible parts Pantry temperature sensor |
| Er rt | Room temperature sensor | Check/Repair Short in sensor or wiring problem.Possible parts Room temperature sensor |
| Er It | System error inside ice maker | Check/Repair Self-test ice maker routineHow-to help How to replace an in-door ice maker on a French door refrigerator Possible parts |
| Er gF | Flow meter error code | Check/Repair Water pressure, flow of water.Possible parts Flow meter |
| F dH | Sensor did not get over 40 F in defrost | Check/Repair Faulty fuse, heater or control board.How-to help How to replace a refrigerator defrost control assembly Possible parts |
| r dH | Sensor did not get over 40 F | Check/Repair Faulty fuse, heater or control board.Possible parts Controller assembly, Defrost heater, Relay on control board |
| Er IF | The fan for the ice compartment failed | Check/Repair Icing fan blocked, ice fan motor is defective, wiring in the circuit is defective, or the control board has failed.How-to help Troubleshooting an Er If error code on a refrigerator video Possible parts |
| Er FF | Evaporator fan failed | Check/Repair Fan motor, control board or wiring harness.Possible parts Evaporator fan motor, Power control board, Wiring harness |
| Er CF | Condenser fan motor is defective | Check/Repair Condenser fan motor, wiring or the control board.Possible parts Condenser fan motor, Power control board, Wiring harness |
| Er CO | Communication error | Check/Repair Communication error between main board and display boardHow-to help How to replace an electronic control board on the back of a refrigerator Possible parts |
| E Od | Wi-Fi modem failure | Check/Repair Unplug the refrigerator and check the wiring connection between the Wi-Fi modem and the display control board. Reconnect any loose wires. If wiring connections are okay, replace the Wi-Fi modem. If the problem continues, replace the display control board.Possible parts Wi-Fi modem, display control board |
| Er FF | Freezer compartment evaporator fan failure | Check/Repair Unplug the refrigerator and check the wiring connection between the freezer evaporator fan and the main control board. Reconnect any loose wires. If wiring connections are okay, replace the freezer evaporator fan. If the problem continues, replace the main control board.Possible parts Freezer evaporator fan, main control board |
| E rF | Refrigerator compartment evaporator fan failure | Check/Repair Unplug the refrigerator and check the wiring connection between the refrigerator evaporator fan and the main control board. Reconnect any loose wires. If wiring connections are okay, replace the refrigerator evaporator fan. If the problem continues, replace the main control board.Possible parts Refrigerator evaporator fan, main control board |
| E ID | Freezer compartment ice maker sensor failure | Check/Repair Unplug the refrigerator and check the wire harness connections from the freezer compartment ice maker to the main control board. Reconnect any loose wires. If wire harness connections are okay, replace the freezer compartment ice maker. If the problem continues, replace the main control board.Possible parts Freezer compartment ice maker, main control board |
| E IU | Freezer compartment ice maker assembly failure | Check/Repair Unplug the refrigerator and check the wire harness connections from the freezer compartment ice maker to the main control board. Reconnect any loose wires. If wire harness connections are okay, replace the freezer compartment ice maker. If the problem continues, replace the main control board.Possible parts Freezer compartment ice maker, main control board |
