LG refrigerator not cooling: defrost, fans, and the demo-mode trap
The freezer still makes ice but the fresh-food compartment sits at room temperature, or both compartments drift warm while the compressor keeps running.
Solutions
Refrigerators
1 procedures · 13 codesFrench door, side-by-side and InstaView. Defrost, fans, linear compressors.
Error codes
Refrigerators
Showing 13 / 13 codes
| Code | Meaning | First check | Procedure |
|---|---|---|---|
| Er FSRF | MeaningFreezer sensor error: the freezer thermistor is open, shorted or disconnected.Service call likely | First checkIce build-up around the sensor pocket on the rear evaporator cover. | · |
| Er rSRF | MeaningFresh-food sensor error: the refrigerator compartment thermistor has failed.Service call likely | First checkSensor harness at the top-rear of the fresh-food liner, behind the light housing. | · |
| Er dSRF | MeaningDefrost sensor error: the sensor watching the evaporator is out of range.Service call likely | First checkPull the rear freezer panel: a solid block of ice on the evaporator confirms defrost failure. | · |
| Er dHRF | MeaningDefrost heater error: the evaporator did not warm during the defrost window.Service call likely | First checkHeater continuity behind the rear freezer panel, plus the thermal fuse clipped beside it. | Open guide |
| Er FFRF | MeaningFreezer fan error: the evaporator fan is not reaching its commanded speed.Service call likely | First checkIce around the fan blade jamming it. Melt it fully before you replace the motor. | Open guide |
| Er IFRF | MeaningIce-maker fan error: the fan feeding the ice compartment is blocked or failed.Service call likely | First checkRemove the ice bin and check for a frozen clump against the fan grille. | · |
| Er CFRF | MeaningCondenser fan error: the fan beside the compressor is stalled.Service call likely | First checkDust mat on the condenser coil at the back or underneath. Vacuum it and retest. | · |
| Er CORF | MeaningCommunication error between the main board and the door display.Service call likely | First checkThe harness in the top hinge: repeated door swings fatigue it until a strand breaks. | · |
| Er ISRF | MeaningIce-maker sensor error: the ice level or temperature sensor is faulty.Service call likely | First checkWipe the infrared emitter/receiver windows on the bin walls, frost blinds them. | · |
| Er gFRF | MeaningFlow-sensor error: the water line is not delivering the expected flow.User-fixable | First checkSupply valve fully open and the filter within its 6-month life. Clogged filters trigger this first. | · |
| Er 1FRF | MeaningIce-maker fan / ice-room circulation error on InstaView platforms.Service call likely | First checkForce a defrost of the ice room, then confirm the duct flap moves freely. | · |
| Er HSRF | MeaningHumidity-sensor error: reported by models with a crisper humidity control.Service call likely | First checkThe sensor sits in the fresh-food ceiling module; condensation on it can cause false readings. | · |
| OF FRF | MeaningDemo / showroom mode is on: the lights and display work but nothing cools. Not a fault.Informational | First checkHold Ice Plus (or Refrigerator) and Freezer together for five seconds to exit demo mode. | · |
No code matches that search.
Codes vary by model year and platform. Always confirm against the manual for your exact model number before ordering parts.