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Model reference

LG LFX25974ST

Refrigerator

2 documents13 error codes12 service modes

Available documentation

Service Manual

  • LG Refrigerator LFX25974ST 04 Service Manual 81 Pages81 pg
    Covers this model
  • Refrigerator Service Manual81 pg
    Covers this model
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Error codes (13)

CodeMeaning
Er CFAbnormality of BLDC fan motor for mechanical room (condenser fan)Er COCommunication error between Micom of Main PCB and Display Micom.Er dHPoor defrostingEr dSShort or disconnection of the defrosting sensor.Er FFAbnormality of BLDC fan motor for freezerEr FSShort or disconnection of the freezer sensor.Er gFFlow meter (sensor) defectEr HSShort or disconnection of the humidity sensor.Er IFAbnormality of BLDC fan motor for ice makingEr ISShort or disconnection of the icing sensor (ice maker sensor)Er ItIce maker kit defectEr rSShort or disconnection of the refrigerator sensor.Er rtShort or disconnection of the room temperature sensor.

Service modes (12)

  • Display Check FunctionSimultaneously press Ultra Ice button and Freezing Temperature Adjustment button for a second
  • Display LCD CheckSimultaneously press Ultra Ice button and freezing temperature adjustment button for a second
  • Display ModeWith the refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button…
  • Display Mode (Showroom/Demo)With refrigerator door open, press and hold the Refrigerator Temp Button and ICE PLUS Button for…
  • Error Code CheckPress the Ice Plus button and Freezer button simultaneously
  • Ice Maker Test ModePress and hold the FILL key on the icemaker for about 3 seconds. The icemaker will run through 3…
  • Ice-Detecting Sensor Diagnosis1
  • Temperature Unit Toggle (°F / °C)Press and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.
  • Test Mode 1 (Forced Operation)Push the test button on the Main PCB 1 time
  • Test Mode 2 (Damper Closed)Push the test button on the Main PCB 2 times
  • Test Mode 3 (Forced Defrost)Push the test button on the Main PCB 3 times
  • Toggle Display °F/°CPress and hold the FRZ TEMP and REF TEMP keys at the same time for over 5 seconds.

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