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Complete reference guide with 54+ error codes for LG appliances. Find your error code below, understand the cause, and learn if it's a DIY fix or needs professional repair.
Parent company: LG Electronics



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Licensed & Insured · 90-Day Warranty · Same-Day Service
| Code | Description | Severity |
|---|---|---|
| Er IF Also: Er 1F | Ice maker fan error Causes: Fan motor failure, Wiring issue | high |
| Er FF | Freezer evaporator fan error Causes: Fan motor failure, Ice buildup blocking fan | high |
| Er CF | Condenser fan error Causes: Dirty condenser, Fan motor failure | high |
| Er CO | Communication error Causes: Main board failure, Wiring issue | high |
| Er FS | Freezer sensor error Causes: Freezer thermistor drifted out of its resistance band, Sensor lead pinched or broken in the freezer liner, Moisture-corroded pins at the sensor connector | high |
| Er RS | Fridge sensor error Causes: Fresh-food thermistor reading out of range, Stuck-open damper skewing the sensed temperature, Harness chafed at the hinge run to the main board | high |
| Er DS | Defrost sensor error Causes: Sensor failure, Wiring issue | medium |
| Er HS | Humidity sensor error Causes: Condensation film fouling the humidity element, Failed sensor module, Missing 3.3-volt reference at the sensor connector | medium |
| Er IS | Ice maker sensor error Causes: Frost film blinding the ice-level optical eye, Weak tray heater leaving cubes jammed against the sensor, Faulty bin-level sensor circuit | medium |
| Er dH | Defrost heater error Causes: Heater failure, Relay issue | high |
| Er IT | Ice maker error Causes: Ice maker motor failure, Mechanism jam | medium |
| Er gF | Flow sensor error Causes: Turbine flow sensor not registering throughput, Clogged filter or frozen dispenser line starving flow, Debris stalling the sensor paddle wheel | medium |
| Er rT | Room temperature sensor error Causes: Ambient thermistor reading outside its range, Install spot too hot or cold for the sensor to compensate, Heat-damaged sensor lead near the compressor deck | medium |