LG Refrigerators Error Codes

Er 0F

Error code “0F” or “OF” and the refrigerator is in demo mode; cooling is off but lights and display work.

Demo Mode Activated

Er 1C

Error code “1C” or “IC” and ice production stops; sometimes accompanied by water in ice room.

Ice Maker Sensor or Communication Error

Er 1F

Error code “Er 1F” and ice production stops; often associated with ice room fan issues.

Ice Room Fan Motor or Feedback Fault

Er 22

Error code “Er 22” and the refrigerator may not cool; compressor may not start.

Compressor Relay / Inverter PCB Error

Er 2F

Error code “2F” and fresh food section may be too warm; airflow from vents is weak.

Refrigerator Fan or Duct Damper Error

Er 5C

Error code “5C” or “SC” and water dispenser or ice maker may not function correctly.

Water Circuit or Sensor Error

Er 5Y

Error code similar to “5Y” or “SY” and cooling performance is unstable.

Sensor or PCB Interpretation Error

Er 67

Error code “Er 67” and doors may not close properly; cooling performance may be poor.

Door Open / Door Switch or Door Alignment Error

Er 88 88

Display shows “88 88” or all segments lit; refrigerator may not respond to controls.

Control Panel Initialization / Power-On Self-Test Error

Er CF

Error code “Er CF” and the refrigerator may not cool properly; condenser fan at the back may not run.

Condenser Fan Motor Failure

Er CO

Error code “Er CO” appears and some functions may be disabled; display may be unresponsive.

Communication Error Between Main PCB and Display PCB

Er dF

Error code “Er dF” and intermittent cooling; frost may appear on back wall of freezer.

Defrost Function Error / Incomplete Defrost

Er dH

Error code “Er dH” and heavy frost buildup on the evaporator; refrigerator may be warm.

Defrost Heater or Defrost Circuit Failure

Er dS

Display shows “Er dS” and refrigerator may not cool properly or may run continuously.

Defrost Sensor / Evaporator Thermistor Fault

Er F dH

Error code related to “F dH” or “F DH” and freezer section shows heavy frost; cooling is poor.

Freezer Defrost Heater Failure

Er F dS

Error code “F dS” or similar and freezer temperature reading is erratic; frost issues may occur.

Freezer Defrost Sensor (Thermistor) Error

Er FF

Error code “Er FF” and freezer temperature is too warm or fluctuates; compressor may run continuously.

Freezer Fan Motor Failure

Er FS

Freezer sensor error displayed as “Er FS” and freezer temperature reading is inaccurate or dashes appear.

Freezer Temperature Sensor (Thermistor) Fault

Er HS

Error code “Er HS” appears and the unit may not defrost correctly or may show erratic temperature behavior.

Humidity Sensor / Defrost Humidity Sensor Fault

Er IF

Error code “Er IF” and ice production is poor or non-existent; sometimes a clicking noise from the ice compartment.

Ice Maker Fan Motor Failure

Er IS

Error code “Er IS” and ice production stops or is severely reduced.

Ice Room / Ice Maker Fan or Sensor Fault

Er rF

Error code “Er rF” and fresh food section is warm; little or no airflow from vents.

Refrigerator Evaporator Fan Motor Failure

Er rF dH

Combined refrigerator fan/defrost error; fresh food section may ice up and fan may be noisy or stop.

Refrigerator Evaporator Fan and Defrost System Fault

Er rS

Refrigerator sensor error “Er rS” and fresh food temperature display is incorrect or shows dashes.

Refrigerator Compartment Temperature Sensor Fault

Er SS

Error code “Er SS” and temperature readings may be inaccurate; cooling may be erratic.

Shorted Temperature Sensor

Symptom

Bad odor inside refrigerator even after removing spoiled food.

Persistent Odor / Airflow and Drain Contamination

Symptom

Clicking noise and refrigerator not cooling; compressor attempts to start repeatedly.

Compressor Start Failure

Symptom

Condensation or moisture on door gaskets and around dispenser area.

Door Heater / Mullion Heater or Gasket Condensation

Symptom

Display panel unresponsive; cannot change temperature or modes, but cooling continues.

User Interface / Touch Panel Failure

Symptom

Doors not closing properly or popping open; warm air and frost buildup inside.

Door Alignment and Gasket Seal Issue

Symptom

Freezer cold but refrigerator warm; little or no air coming from refrigerator vents.

Refrigerator Airflow / Evaporator Fan or Duct Blockage

Symptom

Ice buildup on back wall of freezer; freezer temperature rises over time and fan becomes noisy.

Defrost System Failure

Symptom

Ice maker makes ice but does not dispense; auger motor runs or hums but ice does not come out.

Ice Dispensing Mechanism Failure

Symptom

Ice maker not making ice; ice bin empty after 24–48 hours.

Ice Production Failure

Symptom

Interior lights not working but refrigerator cools normally.

Lighting Circuit Failure

Symptom

Loud buzzing or humming noise from back of refrigerator, especially when compressor runs.

Condenser Fan or Compressor Noise

Symptom

Rattling or vibrating noise, especially when the compressor starts or stops.

Cabinet Vibration / Loose Components

Symptom

Refrigerator makes a gurgling or hissing sound periodically.

Normal Refrigerant Flow Noise

Symptom

Refrigerator not cooling at all; both refrigerator and freezer are warm, interior lights work, fans may or may not run.

No Cooling / Sealed System or Compressor Failure

Symptom

Refrigerator runs constantly and is too cold or too warm; temperature does not match setpoint.

Temperature Regulation / Thermistor or Control Calibration Issue

Symptom

Water dispenser not working; no water flow from dispenser but ice may still be produced.

Dispenser Water Flow Failure

Symptom

Water leaking from front bottom of refrigerator onto floor.

Drain System or Water Line Leak

Symptom

Water leaking inside refrigerator, pooling under crisper drawers.

Blocked Defrost Drain in Fresh Food Section